Malicious PDF — malware analysis report

Static analysis result for SHA-256 69b8827de2f72a53…

MALICIOUS

PDF

91.2 KB Created: 2021-09-04 01:23:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: b7d86f8659dc205a0e52ec15e5011a93 SHA-1: aa1b77674fd5928ea22cf1ec27c13303c44788a9 SHA-256: 69b8827de2f72a53016eec294d5911fe453dc3c1e0ba2b72a10d9156ee7f41f3
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1539 Steal or Forge Credentials

This PDF file was detected as malicious by ClamAV and an ML classifier, exhibiting characteristics of a credential phishing lure. The heuristic 'SE_MFA_LURE' indicates the document is designed to harvest one-time codes or MFA approvals, consistent with stealing session tokens. Numerous URLs hosted on compromised WordPress sites and disposable hosting were extracted, suggesting a link farm used to distribute the phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9970

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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 http://www.deadclan.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1612e6d6a11494---tiluzotipures.pdf In PDF document text
    • https://nasroglobal.com/userfiles/file/xuvez.pdfIn PDF document text
    • http://www.etoiles-recrutement.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b7b61b5118---mukobisoduxexavimo.pdfIn PDF document text
    • http://poaglasses.com/uploads/files/202108220254292316.pdfIn PDF document text
    • https://cedria.es/DOCUMENTS/FotosFCKEditor/file/davimisufebawenifizajijer.pdfIn PDF document text
    • http://studiocinti.eu/userfiles/files/16060019750.pdfIn PDF document text
    • http://www.cheapmotorcycleinsurancepa.com/wp-content/plugins/super-forms/uploads/php/files/dvbeasoqg3b8lu85pruan4n5g6/fupusevikubuwuji.pdfIn PDF document text
    • http://sequoia60.com/clients/875776/File/90327454976.pdfIn PDF document text
    • https://steklo-shik.ru/userfiles/file/2830832662.pdfIn PDF document text
    • http://permanentnimakeup-brno.cz/userfiles/files/44295182679.pdfIn PDF document text
    • http://101balkon.ru/upload/files/kapunoz.pdfIn PDF document text
    • https://comodee.com/wp-content/plugins/formcraft/file-upload/server/content/files/16103473013bc4---jebebukekelur.pdfIn PDF document text
    • https://www.lindopoint.it/wp-content/plugins/super-forms/uploads/php/files/2f53bb0b93d607224dbd0611fd59a86a/83008717135.pdfIn PDF document text
    • http://www.psychophonie-tarbes.com/ckfinder/userfiles/files/sabasiduzabulemarup.pdfIn PDF document text
    • https://intrigantka.ru/images/userfiles/file/80481766349.pdfIn PDF document text
    • http://www.colegiometa.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/160b180476e6a1---38478333968.pdfIn PDF document text
    • https://arichaindia.com/userfiles/file/vadadanexogudebo.pdfIn PDF document text
    • https://vestol.bg/files/file/suduwidirogi.pdfIn PDF document text
    • http://www.belladermeestetica.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609b8af20a104---rudomudo.pdfIn PDF document text
    • http://volkshilfe-ktn.at/images/content/files/69052418182.pdfIn PDF document text
    • https://marciasmithconsulting.com/wp-content/plugins/super-forms/uploads/php/files/15adcc69cc3dc89ffd7736285cae77d8/52811741396.pdfIn PDF document text
    • https://curvy.tw/upload/files/96294337162.pdfIn PDF document text
    • http://goddesshair.net/upload/users/files/99996543098.pdfIn PDF document text
    • http://ewinghighclassof1963.com/clients/e/e4/e4cb61fc1babc639533983e887b7272d/File/juraxetulapejuvagevom.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=checkpoint+vpn+configuration+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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ff02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF02 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00011714.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11714 17888 bytes
SHA-256: 6575f0ba5dd4214dfcd10e334e3532fdd2c1c22ae88174743bad4d78ba8c4555
font_02_sfnt_off000145c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x145C8 10972 bytes
SHA-256: e9ff9647dceee3abee449830221ebc322db313e69e30cd48e3a8e1dc5de98d7a

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