Malicious PDF — malware analysis report

Static analysis result for SHA-256 29e57b43472c8ad7…

MALICIOUS

PDF

48.0 KB Created: 2021-08-16 03:55:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 1641904ae1a309bc4a47a7a9abc035e6 SHA-1: 8ff100ff814926dcbd320b75f2d6d7097da7ef2c SHA-256: 29e57b43472c8ad777e7fbb8f39d6522d9e3c5491a5729cfc01056a05e8a30fe
154 Risk Score

Malware Insights

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

The PDF contains numerous external URIs and link farm heuristics, indicating its purpose is to redirect users to potentially malicious websites. Several URLs point to compromised CMS upload directories or disposable hosting, suggesting a phishing or malware distribution scheme. The ML classifier and ClamAV detection further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7740

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://cevhertemizlik.com/userfiles/files/xasonolaxit.pdf In PDF document text
    • http://dangkyidol.com/wp-content/plugins/super-forms/uploads/php/files/j9dc0iu52kc7edqknb65q5vg03/famotosikurokabavosisu.pdfIn PDF document text
    • https://phoenixknights.co.uk/wp-content/plugins/super-forms/uploads/php/files/4af36e03f3aeb9722b0f9093b6c151b9/gikenodikag.pdfIn PDF document text
    • https://thietkewebseo.com/webroot/img/files/watupabazopazilumegixeser.pdfIn PDF document text
    • http://odontotecnicacoop.it/userfiles/file/56458939387.pdfIn PDF document text
    • https://www.harasportcenter.com/wp-content/plugins/super-forms/uploads/php/files/3sboviqpa01n8hsifbpnabr96d/64627868207.pdfIn PDF document text
    • https://www.skyline-recruiting.com/wp-content/plugins/super-forms/uploads/php/files/9531199633880fc6495956b835da6707/9992433570.pdfIn PDF document text
    • http://ruihuitax.com/files/file/galavadifuxibozajubane.pdfIn PDF document text
    • http://studio5r.com/userfiles/files/lumukadolonedon.pdfIn PDF document text
    • https://dhesient.com/media/72710982079.pdfIn PDF document text
    • https://guapa2.com/admin/fck/file/92154470475.pdfIn PDF document text
    • https://gyandeepjkss.org/userfiles/file/93328319936.pdfIn PDF document text
    • http://about-dogs.ru/upload/file/47286465737.pdfIn PDF document text
    • https://obermeyer-modemarkt.de/upload/file/15715240686.pdfIn PDF document text
    • http://whkmradio.com/userfiles/file/godavu.pdfIn PDF document text
    • http://finsura-lifedirect.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160adc5fd25f1e---jemudutepuwudi.pdfIn PDF document text
    • http://nepodoshlo.kz/ckfinder/userfiles/files/fimuvobesorovovugemamariv.pdfIn PDF document text
    • http://gibisch.com/files/files/kufafekanafijaxomenizegum.pdfIn PDF document text
    • https://pabausa.org/wp-content/plugins/formcraft/file-upload/server/content/files/16098899293c1f---xiwekodivevuxa.pdfIn PDF document text
    • http://colafranceschi.it/userfiles/files/78702715237.pdfIn PDF document text
    • http://vtracauto.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088c3084e7c8---87957659821.pdfIn PDF document text
    • https://sumangold.net.vn/wp-content/plugins/super-forms/uploads/php/files/dblhs3ja2jdf4iqc4jpjrie2oi/sudifadezakubuvozukajo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=cells+and+organelles+worksheet+keyPDF link annotation

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