Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd27a6b6ff143091…

MALICIOUS

PDF

100.9 KB Created: 2021-06-26 12:58:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: 4846a1daeb8e3524b92751c1eba0bce8 SHA-1: f3db6a24630bf42e10a03ea1bb887ec9b5046186 SHA-256: dd27a6b6ff14309110b886a3fe3e90cadc16a037e280923fd6c5ebc874e7dc68
216 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is identified as malicious by ML classifiers and ClamAV, and exhibits characteristics of a phishing lure. It contains numerous links to compromised WordPress upload storage, suggesting a tactic to host malicious content. The critical heuristic 'SE_SECRET_RECOVERY_LURE' indicates the document's primary goal is to trick users into divulging sensitive recovery information, such as private keys or backup codes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9685

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://www.truesdalepainting.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072e96db969f---42355110129.pdf In PDF document text
    • https://www.blackandwhite-salon.com/wp-content/plugins/super-forms/uploads/php/files/b6b4821620b646cf8d1d95d5af20fbd9/95984423693.pdfIn PDF document text
    • http://www.sg-callenberg.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608b64b8ea413---74311004857.pdfIn PDF document text
    • https://phoenixknights.co.uk/wp-content/plugins/super-forms/uploads/php/files/75dd766680ddb06a0f066632dcfa65c7/24303347331.pdfIn PDF document text
    • http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d8cca28b0b---dimeduzelifowikefunel.pdfIn PDF document text
    • https://www.dyna-tech.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160b0967c3cd24---surubatagi.pdfIn PDF document text
    • http://auxerretv.com/content/public/file/nizijegogapimexopopodin.pdfIn PDF document text
    • http://scamps.biz/userfiles/file/gibaveretafene.pdfIn PDF document text
    • https://www.ferienhof-schneider.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608b9eab30cb2---soxodewoxamuzip.pdfIn PDF document text
    • https://mebelpozakazu.ru/wp-content/plugins/super-forms/uploads/php/files/da70a7e156c8ae44908a7bc79cede60f/84320611603.pdfIn PDF document text
    • https://ecole-anglais.com/upload/files/39317930128.pdfIn PDF document text
    • https://www.sgestrecho.es/wp-content/plugins/formcraft/file-upload/server/content/files/1609bf91e5323c---sapigipigarafagawedilero.pdfIn PDF document text
    • http://krindustria.com.br/site/wp-content/plugins/formcraft/file-upload/server/content/files/1607d306a59ae3---41226399391.pdfIn PDF document text
    • http://akinmedikal.com/uploads/file/67618590072.pdfIn PDF document text
    • https://budapestpainter.hu/ckfinder/userfiles/files/vurezavowapamanu.pdfIn PDF document text
    • https://asset-books.com/userfiles/file/80620200510.pdfIn PDF document text
    • http://luxcottage.ru/stroykamen/userfiles/file/xosematapufolaj.pdfIn PDF document text
    • http://fortlauderdalelimorental.net/wp-content/plugins/formcraft/file-upload/server/content/files/160bec27e76583---pawugabodoxatepejas.pdfIn PDF document text
    • https://bizdrive.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/160b2491732600---39684101105.pdfIn PDF document text
    • https://plumcourse.com/wp-content/plugins/super-forms/uploads/php/files/9c05b0158a72dbf8b23c4c8b74ff6663/newunoxuronofukunag.pdfIn PDF document text
    • https://yarsan.ru/wp-content/plugins/super-forms/uploads/php/files/9e4726b620ada14158040cff469ec8e1/54387720555.pdfIn PDF document text
    • https://www.marbelitesa.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16079396a4036b---wajiwaboxezo.pdfIn PDF document text
    • https://www.northamericatalk.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084679dcb9b5---tubelovonenati.pdfIn PDF document text
    • https://rffsev.ru/wp-content/plugins/super-forms/uploads/php/files/09401121b85452f15200e4bee0191019/32083578752.pdfIn PDF document text
    • http://caacoding.net/wp-content/plugins/formcraft/file-upload/server/content/files/1609dc17eb8578---gonawitafa.pdfIn PDF document text
    • https://growlocals.com/wp-content/plugins/super-forms/uploads/php/files/be210ff71a36702e755bb05dcaf5ce81/13783855035.pdfIn PDF document text
    • https://www.novet.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606d9ad07aa60---63729551060.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=how+to+make+encrypted+pdfPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001115d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1115D 17576 bytes
SHA-256: 4d2cac02eba478adae029c08dfbf9b199f0f237d8838296530f73cd39c1d1b6d
font_01_sfnt_off00013ed3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13ED3 10756 bytes
SHA-256: 8899db46af0e5b03c438877102c394f2ab2de7b7412bf23d7fdc490fc61011d8
font_02_sfnt_off00015792.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15792 16312 bytes
SHA-256: 7d15b2d6d265aaca51dda18faee70a1b8fa9d95ed54cb111fb0895789092f9ae
font_03_sfnt_off00016d9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16D9D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.