Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6e680a41267be47…

MALICIOUS

PDF

41.4 KB Created: 2021-10-01 18:33:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: ca3febbaf17fefad51ccef60635ed2c6 SHA-1: b7f55b2281572bf9dc5eca409ecd2fb2bd82f2c5 SHA-256: f6e680a41267be471b03d4446bf058769bf77589a33a03982c3f2b687bf3e44d
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document exhibits characteristics of a phishing lure, including being image-heavy with minimal text and containing numerous external links. The presence of multiple links pointing to compromised CMS uploads and disposable hosting further supports this assessment. ClamAV detection and ML classification confirm the malicious nature of the file, likely serving as a vehicle for delivering malicious content or redirecting users to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7916

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
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 41 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://archism.ru/uplcv?utm_term=download+apps+to+android+tv PDF link annotation
    • http://website-design-company.in/dev3/damodar/ckfinder/core/connector/php/userfiles/files/29450486673.pdfIn PDF document text
    • https://svingenieria.cl/userfiles/file/makukinubigunubolixad.pdfIn PDF document text
    • https://www.cdscabling.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16156146230913---32861778521.pdfIn PDF document text
    • https://raguvosbaldai.manovonia.lt/images/files/mobulimekelavisitudesi.pdfIn PDF document text
    • https://jakspravnenapsa.cz/userfiles/file/75796014351.pdfIn PDF document text
    • https://suacuasathcm.com/uploads/files/58114129693.pdfIn PDF document text
    • http://fabrykakonwersji.pl/wp-content/plugins/super-forms/uploads/php/files/d8c70cf4f805fe5d33e35501b3efaffd/58516314557.pdfIn PDF document text
    • http://worldtile.net/jangheung/userfiles/file/risivejurojodaguze.pdfIn PDF document text
    • https://eltdb.com/UserFiles/files/5530218956.pdfIn PDF document text
    • http://kondicionery-himki.ru/upload_picture/file/59916389928.pdfIn PDF document text
    • https://mamo-tato.ro/userfiles/file/kebipabuxofufubisizovile.pdfIn PDF document text
    • https://www.swx.global/wp-content/plugins/super-forms/uploads/php/files/a4ebc140b2ded6470f9fa0b539af3012/13997890198.pdfIn PDF document text
    • http://designbyjoseph.com/uploads/File/33318732488.pdfIn PDF document text
    • https://aldaserwis.pl/ckfinder/userfiles/files/xetana.pdfIn PDF document text
    • http://land89.com/ckupload/files/99280398464.pdfIn PDF document text
    • http://fc-junajted.com/upload/datoteke/6121773680.pdfIn PDF document text
    • http://marcelponjee.nl/ponjeefiles/file/bopoxopemafatofuzezije.pdfIn PDF document text
    • http://www.ambatownship.com/ckfinder/userfiles/files/45657920164.pdfIn PDF document text
    • http://vako.vn/app/webroot/uploads/files/podin.pdfIn PDF document text
    • http://dpsnowodworze.pl/userfiles/file/bigiwezida.pdfIn PDF document text

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