Malicious PDF — malware analysis report

Static analysis result for SHA-256 44eb55413c6a789c…

MALICIOUS

PDF

46.2 KB Created: 2021-03-29 12:36:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a1cf8cb27d2cec6c32a8afc47a4c285d SHA-1: 6b85e41085fa9602e3aa6a9a19544052e779afed SHA-256: 44eb55413c6a789c0f29487cac34808f5f497b4e6262cbc159e1603ce8b74c76
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is identified as malicious by ClamAV and a machine learning classifier. It employs a common phishing tactic by presenting itself as an image-based lure, likely hiding a clickable link to an external resource. The document contains numerous embedded URLs, with https://jottigo.ru/award?keyword=libertango+buniatishvili+pdf being a primary indicator of malicious intent. The presence of these links suggests the document's purpose is to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7134

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
  • 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 46 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://jottigo.ru/award?keyword=libertango+buniatishvili+pdf
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    • http://pazifelurup.medianewsonline.com/twilight_book_series_amazon.pdf
    • https://cdn-cms.f-static.net/uploads/4459176/normal_604f0072019a8.pdf
    • https://cdn-cms.f-static.net/uploads/4494891/normal_601386bc8fad7.pdf
    • https://cdn-cms.f-static.net/uploads/4427538/normal_603edd8d3b63d.pdf
    • https://cdn-cms.f-static.net/uploads/4421050/normal_602d73f2002b1.pdf
    • http://bafedudovodamo.medianewsonline.com/pupekem.pdf
    • http://xebupado.mypressonline.com/replace_filter_on_robinair_34788.pdf
    • https://static.s123-cdn-static.com/uploads/4486033/normal_5fde3c0ede76a.pdf
    • http://gufopitasuwo.22web.org/7965915929.pdf
    • http://melodabogaso.66ghz.com/90344449611.pdf
    • https://aa5f33e9-793b-4807-a257-9eac84d314d0.filesusr.com/ugd/aa57b2_e1c636041f384161b7a405b8d096e3b9.pdf?index=true
    • http://tokejavopif.rf.gd/comino_couture_size_guide.pdf
    • https://s3.amazonaws.com/wajufifenoxuj/fuzizimujol.pdf
    • https://uploads.strikinglycdn.com/files/61ed4502-ed5f-47f1-a3e0-47458b700757/soil_mechanics_and_foundation_engineering_in_hindi.pdf
    • http://bagurofodi.epizy.com/eular_guidelines_large_vessel_vasculitis.pdf
    • https://6afed14e-2b01-442b-8c2e-11a8a6f39965.filesusr.com/ugd/46a5ae_7d4b1ffe39fe4e6a94816f1886ab1da3.pdf?index=true
    • https://s3.amazonaws.com/paxuvagal/muzedeniwefoxigugo.pdf
    • https://uploads.strikinglycdn.com/files/c80f94ad-2372-4a51-8bc2-5fb8ae7adfb0/roadmaster_bike_parts.pdf
    • https://uploads.strikinglycdn.com/files/c52ec73d-5f12-46e2-ac72-f393fc9db400/how_to_program_harbor_freight_jumbo_universal_remote.pdf
    • https://uploads.strikinglycdn.com/files/311a2bd2-e928-437a-9b57-3868eb559e13/wifegovekatupi.pdf
    • http://tefetuzuzip.myartsonline.com/zefumolederixigobifoxi.pdf
    • http://medexode.atwebpages.com/jilalujizape.pdf
    • https://uploads.strikinglycdn.com/files/1a844b60-d08f-457c-8961-6fce683472b7/does_vinland_saga_get_better.pdf

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