Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a1364667cbb422e…

MALICIOUS

PDF

55.8 KB Created: 2021-04-05 07:32:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 92bab9f59aa658583a019a8a44e42396 SHA-1: c536682da50382703663bdc1ac2c02f687056bc4 SHA-256: 3a1364667cbb422eeefa8372ba0a869fee61949f93e7e341862e5ef9023625f9
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is designed as a screenshot lure, presenting itself as an image to trick users into clicking embedded links. The heuristics indicate a large number of external PDF links, suggesting a link farm or redirection mechanism. The ClamAV detection and ML classifier further support its malicious nature, likely serving as a phishing or malware distribution vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6664

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 55 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://gimoguvi.ru/award?keyword=airways+magazine+pdf
    • https://retibome.weebly.com/uploads/1/3/4/6/134680472/0515bf042db89.pdf
    • https://cdn-cms.f-static.net/uploads/4495058/normal_5fe6b5600442b.pdf
    • https://nalokulomegeze.weebly.com/uploads/1/3/4/7/134758193/92a4af13885.pdf
    • https://cdn.sqhk.co/muresogus/wR5hihb/autoloader_blackberry_q20.pdf
    • https://vetaguluxidi.weebly.com/uploads/1/3/4/6/134656260/ledabewoto.pdf
    • https://dofixojibol.weebly.com/uploads/1/3/0/8/130874360/nidofewepix-lixorobopulit-tibis-bexabevavi.pdf
    • https://cdn.sqhk.co/gopilufifeda/avBghFO/microsoft_stream_app_download_for_mac.pdf
    • https://fatitabo.weebly.com/uploads/1/3/4/7/134757356/feb944023dc6.pdf
    • https://static.s123-cdn-static.com/uploads/4422148/normal_60076e7188095.pdf
    • https://cdn.sqhk.co/kujusiru/Hgjhjxi/45233099982.pdf
    • http://mavidodi.iblogger.org/simple_cash_flow_template_excel.pdf
    • https://cdn-cms.f-static.net/uploads/4453342/normal_605fefff149a5.pdf
    • https://mokapojigum.weebly.com/uploads/1/3/4/6/134690111/gakewarebesi.pdf
    • https://mexukisigugat.weebly.com/uploads/1/3/4/7/134702857/jexetuje.pdf
    • https://76ed6b59-b034-43ac-b949-e1c08f76e3cb.filesusr.com/ugd/ee6100_ddefee16bf8d412f959ec0c7562381de.pdf?index=true
    • http://segixiw.epizy.com/30127382049.pdf
    • https://945b3f91-9c76-4178-be32-f0dab3cfe2c6.filesusr.com/ugd/8d5d69_770e1dba0b3344e98e8e63105478b1fd.pdf?index=true
    • https://78151a86-a557-4e49-81aa-a2539eea45c7.filesusr.com/ugd/204f4f_8047fb7b38cd47bf9e9e7d3ee43696d2.pdf?index=true

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