Malicious PDF — malware analysis report

Static analysis result for SHA-256 9664cfdd6abbfa41…

MALICIOUS

PDF

53.1 KB Created: 2021-03-31 04:01:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 319e5a623ac0fb27a98996b747e69608 SHA-1: 299578290e937b7be9ff2f52299f0f06d2de4037 SHA-256: 9664cfdd6abbfa4145bc89e5fc2b5e845195270e7f4e5061fef17588b310b553
124 Risk Score

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 0.8574

Heuristics 4

  • 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 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://kuzutuzo.ru/award?keyword=list+of+european+countries+and+capitals+pdf PDF link annotation
    • https://gubuwogufulero.weebly.com/uploads/1/3/4/6/134608521/b4dfb7ebbd6f50f.pdfIn PDF document text
    • http://shoop-fl.ru/diagramas_casos_de_usop79q2.pdfIn PDF document text
    • http://kind-insta.site/vekatutipokekepeleve5hp0e.pdfIn PDF document text
    • http://rodsfish.club/54532557690ign83.pdfIn PDF document text
    • https://vasejafarobi.weebly.com/uploads/1/3/1/4/131454155/4420401.pdfIn PDF document text
    • https://nidimojisojetuz.weebly.com/uploads/1/3/5/9/135962904/1c6fc9c50f824b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388274/normal_5fcca211871ee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459777/normal_60579c31d3089.pdfIn PDF document text
    • https://dajepulexito.weebly.com/uploads/1/3/4/5/134591334/lenelipag.pdfIn PDF document text
    • https://vusubidasezojix.weebly.com/uploads/1/3/5/3/135399418/994dda7c7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479923/normal_5fe62633625af.pdfIn PDF document text
    • https://pelunukemuf.weebly.com/uploads/1/3/0/7/130776607/wibadubatu.pdfIn PDF document text
    • https://vozomazusow.weebly.com/uploads/1/3/4/5/134510153/7f70d16a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420034/normal_5fca5e9887df2.pdfIn PDF document text
    • https://nupafosudivoz.weebly.com/uploads/1/3/2/6/132682156/posasozagamux.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415782/normal_601e4af5b8a1b.pdfIn PDF document text
    • http://faceskinagainbeauty.xyz/889809118180veof.pdfIn PDF document text
    • https://pudasebedizut.weebly.com/uploads/1/3/4/5/134587980/4f8678.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26f98eb4-1657-4b0e-a288-c554af95b043/37235349915.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ebf4c174-6ebf-42a5-ac08-441ed03135aa/brother_p-touch_pt-1280_reset.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98424990-9f65-4eb5-b772-932d214784ca/wuvizakoriv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5e3c6fa-2272-471b-b0b5-84d54f4c25ed/8994729003.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3289bd2c-3ccc-4956-98f7-b66e38153472/53283909065.pdfIn PDF document text