Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7b2d54c080a40ad…

MALICIOUS

PDF

53.2 KB Created: 2021-03-22 06:56:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ad483da78432050d55bd664df024b9a2 SHA-1: 7988acd389566e84f327d492ddee7eec02379537 SHA-256: d7b2d54c080a40ad8d5e6f9dfe21060fce23a3c3ed23a3d69b617c4ddf7582ee
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as a phishing lure due to its image-only nature and embedded clickable link. The heuristic 'PDF_IMAGE_LURE' indicates it's designed to trick users into clicking an external URL, which is confirmed by the 'PDF_URI' finding pointing to 'https://maypoin.ru/strik?utm_term=qa+manual+testing+interview+questions+and+answers+pdf'. The presence of numerous external links suggests a link farm, likely to distribute malicious content or further phishing attempts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6909

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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 53 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://maypoin.ru/strik?utm_term=qa+manual+testing+interview+questions+and+answers+pdf
    • https://cdn-cms.f-static.net/uploads/4466398/normal_603875ae9d863.pdf
    • https://cdn-cms.f-static.net/uploads/4379970/normal_603e0812e1dbf.pdf
    • https://cdn-cms.f-static.net/uploads/4387939/normal_604502bb1c845.pdf
    • http://lobulezinovux.medianewsonline.com/building_the_intentional_university.pdf
    • http://fajamad.mypressonline.com/51317623367.pdf
    • http://tijukilebag.getenjoyment.net/ctet_syllabus_paper_2.pdf
    • https://cdn-cms.f-static.net/uploads/4393503/normal_5fd0eae236ecf.pdf
    • http://fuxutigox.mypressonline.com/76442667583.pdf
    • http://kamefutebiwef.mywebcommunity.org/sedod.pdf
    • http://ledozikatiresev.scienceontheweb.net/microsoft_visual_basic_.net_programmers_cookbook_.pdf.pdf
    • http://dujegud.getenjoyment.net/business_application_of_computer_calicut_university.pdf
    • https://static.s123-cdn-static.com/uploads/4378157/normal_6000aced234fa.pdf
    • http://dotixomovi.sportsontheweb.net/what_are_the_three_purposes_of_punishment.pdf
    • https://cdn-cms.f-static.net/uploads/4384320/normal_601c6b493ea90.pdf
    • http://weparaxopulo.atwebpages.com/winupulitulikadetefejede.pdf
    • https://c4bedd8b-a3e9-4aa8-9751-a6fde4035b7e.filesusr.com/ugd/037f08_495679bfe48445b6b1b759f1c979ec04.pdf?index=true
    • http://runuwug.myartsonline.com/caste_certificate_application_form_ap.pdf
    • http://zavulelobawabi.onlinewebshop.net/76350862003.pdf
    • https://7b9449e5-51e9-4a7e-81f5-8587c42320f9.filesusr.com/ugd/571bad_e1fb2865598f45228c3c8cb1aa26341d.pdf?index=true

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