Malicious PDF — malware analysis report

Static analysis result for SHA-256 d68412aef5cd7fa0…

MALICIOUS

PDF

49.4 KB Created: 2021-07-03 06:54:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 3241b28564e0aee5929b51565f3b55dd SHA-1: f968b9c8102ea4c523b72cdc9e87bdd6bc7c7a96 SHA-256: d68412aef5cd7fa0d03f5e7936c2e5d235f06f6df6aa5b80aa64d4ad6a2be8ea
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is identified as malicious by ML classifiers and ClamAV, exhibiting characteristics of a phishing lure. It contains numerous external links, many pointing to compromised WordPress upload directories, suggesting an attempt to redirect users to malicious content or downloads. The document body is heavily obfuscated, preventing a detailed analysis of its specific intent beyond the general lure mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8963

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 49 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://oniceh.ru/uplcv?utm_term=oral+reading+rate
    • https://irantruck.ir/data/file/debafabenunenenizig.pdf
    • https://hitpoint.tw/userfiles/file/vunupik.pdf
    • https://caffedisanto.it/file/buzisimodedi.pdf
    • http://soupworld.de/upload/file/43264259127.pdf
    • https://nhaban24h.com.vn/wp-content/plugins/super-forms/uploads/php/files/gn75v5kc554svj74degd9qpo0d/jedomazibupukomev.pdf
    • http://ahdjcm.com/upload/files/88375867878.pdf
    • https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c20db2036b6---petusovorodiv.pdf
    • http://exactblue.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c1872106df---warasezuragutiba.pdf
    • http://www.toptehnik.si/images/21705268131.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c15ca318d36---konubijijunonam.pdf
    • http://thanuyentea.com/ckfinder/userfiles/files/gakejedutazetuzosudubim.pdf
    • http://svenstavik.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ddb4563ec6---topijeliduloxasaluz.pdf
    • http://color-gateway.com/userfiles/file/xoxuwapudas.pdf
    • https://bistakalikotenetwork.com/userfiles/file/wuvudibixum.pdf
    • https://jetzterstrecht.hamburg/wp-content/plugins/super-forms/uploads/php/files/abfeprihi967sgleuk01eml88d/posubu.pdf
    • http://www.whirlpool-beachcomber.at/wp-content/plugins/formcraft/file-upload/server/content/files/1609944ad56944---mivirisewus.pdf
    • https://g-ortho.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16072ffd1065fd---varurezixurozobiputi.pdf
    • http://botosani.ro/img/uploads/file/88265219943.pdf
    • http://allasclub.com/campannas/file/jojadorerebubo.pdf
    • https://wcdt.co.th/wp-content/plugins/super-forms/uploads/php/files/7m8aqc948kt0cpghq0fq9bgten/pijonofibaradepadevevo.pdf
    • https://stonebuild.bg/f/uploads/files/40332333938.pdf
    • http://toanthinh.vn/webroot/img/files/61342970380.pdf
    • https://www.bluegreenshouseboats.in/wp-content/plugins/formcraft/file-upload/server/content/files/1608658b22e339---79229902163.pdf
    • http://www.loockuniformes.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/1607a307f64147---rukokafiwapep.pdf

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