Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c477a47d2737a29…

MALICIOUS

PDF

54.3 KB Created: 2021-06-05 13:13:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 201d7e0e53b91ffdd33c7e92eb828ae3 SHA-1: 5b01bb673bdc35e9107074ef77cb28d03cd99617 SHA-256: 9c477a47d2737a2985059174c41b563336a4b748eeb6d95c6b58dbd0eccc0b76
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8902

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
  • 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.
  • 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://synerhu.ru/pbw?utm_term=sampieri+metodologia+dela+investigacion+pdf+5ta+edicion+gratis PDF link annotation
    • https://lafowesatumu.weebly.com/uploads/1/3/4/5/134503032/1eed2d8aa07b82.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491671/normal_6068e0a4e15b9.pdfIn PDF document text
    • https://balupelirotapos.weebly.com/uploads/1/3/2/6/132681476/fidosez.pdfIn PDF document text
    • https://lakaporizad.weebly.com/uploads/1/3/4/2/134234628/pufilojegipimoni.pdfIn PDF document text
    • https://xanilavobug.weebly.com/uploads/1/3/5/9/135959945/zesuzifu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403533/normal_5ffcf1040d9bb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477658/normal_604204494bb25.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383689/normal_601d794425185.pdfIn PDF document text
    • https://gideturifit.weebly.com/uploads/1/3/4/8/134887905/mipifizuni.pdfIn PDF document text
    • https://surejijal.weebly.com/uploads/1/3/4/5/134525532/jesagagilufo_mizirerakiv_vodesewesa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387037/normal_6065fa6416387.pdfIn PDF document text
    • https://lurofajar.weebly.com/uploads/1/3/4/1/134131478/2806687.pdfIn PDF document text
    • https://tupevunokojig.weebly.com/uploads/1/3/1/4/131454116/dulevo_wakob_logisefogike_nogoso.pdfIn PDF document text
    • https://fusufuxono.weebly.com/uploads/1/3/1/6/131606103/a47c9060ece.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385217/normal_605f5ef6b3a81.pdfIn PDF document text
    • https://xowasesulozuvuv.weebly.com/uploads/1/3/5/3/135347394/vetufo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365551/normal_5fc7f9f1c4051.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466398/normal_60397aa49e7e9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427079/normal_60663b82ab2b5.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f6f6afe-c9e5-4a04-82b1-3e3c8727ccd9/widevine_content_decryption_module_component_not_updated_mac.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a279e51b-b71a-440f-9a59-e5e52d40f3ab/54899385708.pdfIn PDF document text

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