Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d34eef3a7c1e615…

MALICIOUS

PDF

61.2 KB Created: 2021-06-08 15:39:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 9ac0d289cbb7fc01ab17a44d8a0455fb SHA-1: 36fe9bc4e34db57252743e4880b9209babe945bd SHA-256: 6d34eef3a7c1e615ad081b07a43750cdbe0d0e65fba2097ffb2e79222134e7cc
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 0.6478

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://crysiq.ru/pbw?utm_term=english+grammar+bank+exams+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4444866/normal_6015ff26eeb42.pdfIn PDF document text
    • https://xizuzumuk.weebly.com/uploads/1/3/2/6/132682261/ravutu.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4380525/normal_60b6e08c4c272.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408593/normal_5ff4808229b16.pdfIn PDF document text
    • https://jadusozig.weebly.com/uploads/1/3/5/3/135327359/pajavije-vopixevafukire-wejiguliguxuwaf-jogutaje.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378827/normal_5ff82c53478d4.pdfIn PDF document text
    • https://xolopebowuraj.weebly.com/uploads/1/3/4/6/134600193/disexakasulut.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414868/normal_60bc0d5701252.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493600/normal_600ee53c87fc4.pdfIn PDF document text
    • https://wopamogifit.weebly.com/uploads/1/3/4/3/134341426/xokes.pdfIn PDF document text
    • http://nozobitativi.pbworks.com/f/97434385572.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9e3fbb5-aa5b-44cf-ab16-1ffe98fc34bb/john_deere_gx345_prices.pdfIn PDF document text
    • http://tefesabiji.pbworks.com/w/file/fetch/144727368/xibedazimimiwadapiwalu.pdfIn PDF document text
    • http://wefolevemud.pbworks.com/f/fofogomob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac4225d5-9e70-4512-b617-23d4fef64f12/nespresso_lattissima_touch_flat_white.pdfIn PDF document text
    • http://risuxujuvu.pbworks.com/w/file/fetch/144843192/how_to_calculate_dividend_growth_model_in_excel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2d04adf-b64a-4214-83d1-16a3f22112b2/pentax_k3_2_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3c1debb-9b58-4571-9ecc-7a76315c6178/73934027072.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8145f2d7-4091-4b55-bd0d-96be56ca6b89/empire_earth_3_free_download_full_game_german.pdfIn PDF document text
    • http://fepazonavu.pbworks.com/f/5703273196.pdfIn PDF document text