Malicious PDF — malware analysis report

Static analysis result for SHA-256 34dc03ff9d10ea56…

MALICIOUS

PDF

49.0 KB Created: 2021-03-28 08:13:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: fbd94c7c88be11f423e720b7b5e5f617 SHA-1: f0b2dbe8b8c76707bc65088ab5cf44e9d2c7a017 SHA-256: 34dc03ff9d10ea56e7f6244f0501470f7cb1683d5ba2bb5eb55fdbaefaad5b57
184 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 0.7603

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://gimoguvi.ru/strik?utm_term=how+to+reset+a+portable+air+conditioner PDF link annotation
    • https://bulabameworiw.weebly.com/uploads/1/3/4/0/134096114/ludolelasix.pdfIn PDF document text
    • https://jotutavujisab.weebly.com/uploads/1/3/1/1/131164129/4701c68764d5b.pdfIn PDF document text
    • http://makamar.tech/21613010640bqzcv.pdfIn PDF document text
    • https://cdn.sqhk.co/masamiwe/hghejgS/52684961766.pdfIn PDF document text
    • http://albl.ru/what_is_zmodo_beamn137o.pdfIn PDF document text
    • https://cdn.sqhk.co/jesisuvov/dGzdjdK/xegud.pdfIn PDF document text
    • http://twirlini.com/centerpoint_4x32_scope_focusfuy12.pdfIn PDF document text
    • https://cdn.sqhk.co/budafitanu/anI1Uhi/guwinawubozipuvunudumede.pdfIn PDF document text
    • http://shopmzm.site/42420895009zcf94.pdfIn PDF document text
    • https://basosogufu.weebly.com/uploads/1/3/4/6/134682995/kebarajezibagex.pdfIn PDF document text
    • https://cdn.sqhk.co/josutupamav/jcIjbji/sunizo.pdfIn PDF document text
    • http://circleshtang.xyz/66676946079a18yr.pdfIn PDF document text
    • https://mejebepagomuda.weebly.com/uploads/1/3/4/4/134494428/1376675.pdfIn PDF document text
    • https://cdn.sqhk.co/wuwosexed/Tjixqid/starbucks_chocolate_chip_cake_pop_recipe.pdfIn PDF document text
    • https://fefaxunitu.weebly.com/uploads/1/3/4/3/134399706/kuturiwafi_jesutu.pdfIn PDF document text
    • http://xozonline.ru/77204324725y2aaq.pdfIn PDF document text
    • http://savagolisax.22web.org/cuisinart_coffee_maker_guide.pdfIn PDF document text
    • http://najirukijo.rf.gd/35114599715.pdfIn PDF document text
    • https://bef89f6e-6323-4b84-ad9d-a44490bfcc4f.filesusr.com/ugd/96768c_a4d9d80b59a144d9a55beeb31dc3ce67.pdf?index=trueIn PDF document text
    • https://a8a70d16-e3f0-4805-b115-4d8c62c40b57.filesusr.com/ugd/82e28d_63f99b05deeb4c2f8e5e70129419c96d.pdf?index=trueIn PDF document text
    • http://donomazuzewojul.epizy.com/26150850774.pdfIn PDF document text
    • https://ed7c5604-ec0f-4ae6-9d22-6d534b57d154.filesusr.com/ugd/1d5a3f_5465dbd6eb164b06b4d9976b9fbb29c9.pdf?index=trueIn PDF document text