Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecf922e9d86fa06c…

MALICIOUS

PDF

42.2 KB Created: 2021-05-08 14:24:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7ed5c1cc654811f981c6938d9bbab6c9 SHA-1: 45588e3cff5c1a2e3787df8d9791575051e703f6 SHA-256: ecf922e9d86fa06cf8dcd2c2014f98ac9eaf172978ad013d97f71c201f11f46c
204 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is identified as malicious by multiple heuristics and an ML classifier, specifically flagged as a phishing lure. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious sites. The primary malicious URL identified is https://bologen.ru/strik?utm_term=laramie+project+monologue.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7383

Heuristics 6

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 42 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://bologen.ru/strik?utm_term=laramie+project+monologue
    • http://lomidal.mygamesonline.org/wupixozaf.pdf
    • https://cdn.sqhk.co/vejuwipem/hGut4gi/zalo_apk_appstorevn.pdf
    • https://cdn-cms.f-static.net/uploads/4368758/normal_60339e97c2825.pdf
    • https://static.s123-cdn-static.com/uploads/4465545/normal_600750af00db8.pdf
    • http://tisejamebip.sportsontheweb.net/aprendiz_de_brujo_alexa_mohl.pdf
    • http://kamikofonem.mygamesonline.org/administration_of_criminal_justice_act_download.pdf
    • https://fexaxotira.weebly.com/uploads/1/3/5/4/135401388/8774817.pdf
    • https://cdn.sqhk.co/genamudazunu/ihjdjbX/bowling_near_me_now.pdf
    • https://tuxutumixebapi.weebly.com/uploads/1/3/1/4/131438514/vavevozeso.pdf
    • https://static.s123-cdn-static.com/uploads/4403824/normal_6003e78de83e0.pdf
    • https://static.s123-cdn-static.com/uploads/4481552/normal_5ff151a1c9f66.pdf
    • https://dorenezawux.weebly.com/uploads/1/3/5/3/135383086/651835fa6670.pdf
    • https://1a899ca6-11bf-4464-971e-4bf0b885e765.filesusr.com/ugd/4ac3ff_c1da86fcdc2249fd8a889fd09aeb8ca3.pdf?index=true
    • https://85d2c5a2-fc31-4f76-86b4-4ebe2abe2bf4.filesusr.com/ugd/a8cc01_a5d7beb997124e81865600edcb86f963.pdf?index=true
    • https://bd04a250-715b-4db0-8087-55ec2f714cf5.filesusr.com/ugd/0c2191_515b95bd16c24a9e831d6b5839259ee4.pdf?index=true
    • https://bf808793-8b46-4c54-8b11-319763181fa0.filesusr.com/ugd/0d018b_f3bf037d47fc46e193a88edcebe4e2a9.pdf?index=true
    • https://89511c73-251b-4bee-a1a5-5f4bd4863124.filesusr.com/ugd/f24cb8_e213e48afc7043e18418f9965b6797d5.pdf?index=true
    • https://19f621d4-ab03-49b5-bf1d-c78de40104d4.filesusr.com/ugd/bc84a3_605f49bdca90446abf58b0a3657266b7.pdf?index=true
    • https://74bb8966-1fc2-43cb-a641-24c20f380d28.filesusr.com/ugd/84c7b5_89a39e7771cf409db8b8fb62d7da8675.pdf?index=true
    • https://ecad98c5-3f79-4b5a-9309-7060426a101e.filesusr.com/ugd/66ec94_b0e56afad76b4cb3bb0722b501764039.pdf?index=true
    • https://b860438a-ced3-4995-86f2-ad9a24e3f15c.filesusr.com/ugd/938eb2_caeb3d639b8c47de8ab23c3376ae52d7.pdf?index=true
    • https://9e730ba1-499c-413e-9a09-8a81f8121270.filesusr.com/ugd/0a0016_8b63a883074d49b9b81a03b5ee018f80.pdf?index=true

Open this report in the interactive analyzer, or submit your own file for analysis.