Malicious PDF — malware analysis report

Static analysis result for SHA-256 7470a4d2c6604eaa…

MALICIOUS

PDF

84.2 KB Created: 2021-09-02 07:37:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 335a4ce193bf03b3abf2bd2f4c8e596e SHA-1: 98d8cd659fb419e0871ca83c58431a9c71204615 SHA-256: 7470a4d2c6604eaa99ccf4d315f9eaea31b33a4460623421c8c49d6ea1b6c287
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to websites hosted on compromised CMS platforms, indicating a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly suggest malicious intent, classifying it as a phishing trojan. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with malicious document delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://coretry.ru/uplcv?utm_term=how+to+find+atomic+mass+number PDF link annotation
    • http://averon.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16096a4dad23dd---41218772586.pdfIn PDF document text
    • https://www.sir.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608793a99460d---58868641318.pdfIn PDF document text
    • https://hylyt.co/wp-content/plugins/super-forms/uploads/php/files/ee08b4e24f8f479ac83a02ae9b8f6e80/72546320704.pdfIn PDF document text
    • http://theemasternetworker.com/ckfinder/userfiles/files/52450532317.pdfIn PDF document text
    • https://www.marjojaspers.nl/ckfinder/userfiles/files/76955244999.pdfIn PDF document text
    • http://cl-metalparts.com/d/files/74613651950.pdfIn PDF document text
    • https://www.sixteengrams.com/wp-content/plugins/super-forms/uploads/php/files/1itqft5o3nfea88brqu3lt9pph/xetokilusajuju.pdfIn PDF document text
    • https://vayamcs.com/content_files/files/11014409281.pdfIn PDF document text
    • https://mithermomix.com.mx/wp-content/plugins/super-forms/uploads/php/files/f1b0f077477220c93d947f03766982ec/lizegifojozivawutize.pdfIn PDF document text
    • http://europeanprofservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b06a7e6de82---dilojabuwijutod.pdfIn PDF document text
    • https://selectwifi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ff0af5742b5---33938354550.pdfIn PDF document text
    • http://wawa757.com/uploads/files/bitiwofexeraguvebenokos.pdfIn PDF document text
    • https://veglifekc.org/wp-content/plugins/super-forms/uploads/php/files//32812609468.pdfIn PDF document text
    • http://primaneighbors.com/userimages/35314098142.pdfIn PDF document text
    • http://perfectthesale.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a1466f2e5d---lexewoseb.pdfIn PDF document text
    • https://mycocoa.org/images/upload/files/37443370898.pdfIn PDF document text
    • http://expertcomptablecourreges.fr/michel_courreges/userfiles/file/xobibipomoloriloj.pdfIn PDF document text
    • https://www.babetravelling.com/ckfinder/userfiles2/files/98985733504.pdfIn PDF document text
    • http://vantaidongsaigon.com/uploads/files/wefidiziziru.pdfIn PDF document text
    • http://studioriboldi.eu/userfiles/files/sutiv.pdfIn PDF document text
    • https://atpl.aero/ckfinder/userfiles/files/59278170805.pdfIn PDF document text
    • http://wabasnb.com/files/fckeditor/file/1632440258611e19df2fef9.pdfIn PDF document text
    • http://forti.in/userfiles/file/62113456968.pdfIn PDF document text
    • 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_off0000e310.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE310 10908 bytes
SHA-256: 70a3cb989448e2a38ae3faa86729fdc3a371502bbc776541a280a5fe89287102
font_01_sfnt_off0000fc55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC55 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011467.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11467 17844 bytes
SHA-256: dc24050e63ab95cca8c47d049aeea4c7110fa72a0f098d62b1d94af1bb0c76e8

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