Malicious PDF — malware analysis report

Static analysis result for SHA-256 7474ad9bcb4cf9bf…

MALICIOUS

PDF

67.9 KB Created: 2021-09-04 00:21:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: a778cb4cc55288acf46b21a459f48165 SHA-1: adba7586904a92e0aa01ead557ab2af5dc94b098 SHA-256: 7474ad9bcb4cf9bf167b52f6b1d4b0251e7dd5f295fbbc5e978646a0fecd0232
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and ML classifiers, indicating it is likely a phishing or malware distribution lure. The document contains numerous links to external websites, many hosted on compromised CMS platforms, suggesting an attempt to redirect users to malicious content. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the heuristics point towards a phishing or downloader attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5990

Heuristics 5

  • 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
  • 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://synerhu.ru/uplcv?utm_term=plan+de+vida+espiritual+pdf PDF link annotation
    • http://lbs.ac.at/wp-content/plugins/super-forms/uploads/php/files/4hmefc6s5ajtaod9eap622rpa8/74281159888.pdfIn PDF document text
    • https://psg66.ru/admin/ckfinder/userfiles/files/88688146245.pdfIn PDF document text
    • https://paloaltospeakerseries.com/wp-content/plugins/super-forms/uploads/php/files/f0b1ecd83ca010703d0d70c8ed23501a/wipimesu.pdfIn PDF document text
    • http://www.alex-vasilkov.ru/images/wisdom/file/98642343782.pdfIn PDF document text
    • https://www.isnb.co.uk/wp-content/plugins/super-forms/uploads/php/files/6aa2c4db6cb7964384919d8611053567/99757929436.pdfIn PDF document text
    • http://frappsreagent.com/upload/files/buvebumawidukikojuzo.pdfIn PDF document text
    • http://www.nomorcantikjoss.com/file/muzemo.pdfIn PDF document text
    • https://x-leather.com/radsportfiles/file/kimuresiditigagos.pdfIn PDF document text
    • http://wbbray.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082acf5f154d---63042407786.pdfIn PDF document text
    • http://inventory-acepipe.com/images/uploads/files/41909701349.pdfIn PDF document text
    • http://telegid.tv/userfiles/files/wokema.pdfIn PDF document text
    • http://statewideroofservices.com/clients/b/b8/b825a24af54c157c196cf52173d75bf0/File/60010455568.pdfIn PDF document text
    • http://anthonyvienna.com/sites/default/files/file/wisaxegelifakigazolufaxa.pdfIn PDF document text
    • http://anhbanglaw.com/userfiles/file/93059039978.pdfIn PDF document text
    • https://fotobolfestmeny.hu/mvc/userfiles/file/ziretanibevev.pdfIn PDF document text
    • https://bdblue.com/ckfinder/userfiles/files/24213084500.pdfIn PDF document text
    • https://rebel-guitars.com/wp-content/plugins/super-forms/uploads/php/files/f1364d8889c1c8c55cf94cbc08e90b55/213870089.pdfIn PDF document text
    • http://3handseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b34db2c5aa6---jovofuvadigonenuse.pdfIn PDF document text
    • http://vagtteam.dk/userfiles/Files/5843432138.pdfIn PDF document text
    • https://siphouse96.com/wp-content/plugins/super-forms/uploads/php/files/584a7e2028610e9754b754cb5af15786/11807433892.pdfIn PDF document text
    • https://www.focus.mu/wp-content/plugins/super-forms/uploads/php/files/4f780c1e3fbe44400d2c2caddb4729fa/vanubifuvasesez.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c81d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC81D 10540 bytes
SHA-256: 71a4d29c36f48717086f10a1800fd67c7d120f5be5e990c98b566fcad9eb14a2
font_01_sfnt_off0000e03e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE03E 18260 bytes
SHA-256: 80edbec23dcd9cfa7c02b1c89e655318accdae7344ed6293ad82285b637bc1e3

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