Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbf796cbc2ea0b3f…

MALICIOUS

PDF

65.6 KB Created: 2021-03-25 16:32:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 4ce0bf20d13345d99f08a17657f46490 SHA-1: 8b849f9d9ec662836f031aa2526448c03a2ded08 SHA-256: cbf796cbc2ea0b3fdae1f2cd8875e42e90a7f1e7e2283a26e8cebdfb9ab72c67
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, with a significant heuristic identifying it as a link farm. Several of these links point to potentially malicious domains, suggesting an attempt to redirect users to phishing or malware-hosting sites. The presence of a ClamAV detection for 'Pdf.Phishing.Trojan' further supports the malicious nature of this file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8273

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 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.
  • 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://botokaw.ru/strik?utm_term=swami+sri+yukteswar+giri+holy+science+pdf PDF link annotation
    • http://muldwych.com/best_whatsapp_profile_picjotdb.pdfIn PDF document text
    • http://trastenmyqort.online/penetrate_pro_apk_latestgnjoe.pdfIn PDF document text
    • https://dujomujur.weebly.com/uploads/1/3/4/8/134883281/3002b.pdfIn PDF document text
    • http://tradestaroffice.com/407899113095mwvn.pdfIn PDF document text
    • http://manybigs.space/196344803247mo9t.pdfIn PDF document text
    • https://fukituxepuronip.weebly.com/uploads/1/3/4/6/134605821/jifaju-xojujokegu.pdfIn PDF document text
    • http://shoppingyxplus.xyz/graphic_design_classxnubs.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/juwofuxufijup/91542617401.pdfIn PDF document text
    • https://s3.amazonaws.com/wuwabobujasivor/ragiduzogiteteralu.pdfIn PDF document text
    • https://s3.amazonaws.com/libusamagowuvo/blender_2.81_tutorial.pdfIn PDF document text
    • https://f2d828cf-06d9-46ea-85af-d88b0bc20d44.filesusr.com/ugd/501a20_c2c9f7c938a74f278d4f7250af04e843.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/6727aef8-80db-4d52-99a3-9909335b259d/functional_analysis_definition_aba.pdfIn PDF document text
    • https://s3.amazonaws.com/zobuwubedak/zusixe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48a4239e-ad8c-40af-8414-eee5737bb95e/youtube_poker_cash_game_2020.pdfIn PDF document text
    • https://77da94c0-0f0a-445b-87af-e489a0b5ef66.filesusr.com/ugd/db1da1_2aaf14563f334a8c8b5a161665e0d76f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/ronatiduzoxij/59121837802.pdfIn PDF document text
    • https://8eb0ff2f-1b5f-41fb-a82b-bf279dc7f43e.filesusr.com/ugd/868f76_b9e487c487a64119b35f4b12392b3a10.pdf?index=trueIn PDF document text
    • https://1cdd1dcb-54a5-4750-95ad-c4cce9a68cd1.filesusr.com/ugd/1e32c2_e0e3e935377a46a8abfcd6b4b43745be.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jeromopelurab/rifojomirapumafo.pdfIn PDF document text
    • https://s3.amazonaws.com/vajefam/chrysler_crossfire_performance_chip.pdfIn PDF document text
    • https://edcb5511-827b-40b0-97c1-3499c313f96b.filesusr.com/ugd/0779a3_b6496271dcd24f52bc0bcaddce21ad53.pdf?index=trueIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF44 5932 bytes
SHA-256: cae6557729edbd6b2b5db7250a2eeae3f598ea1561dc494f6d642c8eaa1ffaa0

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