Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bf0b824e8e71528…

MALICIOUS

PDF

56.3 KB Created: 2021-05-26 18:45:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e52da9fd416e09e8a680658950a8d17c SHA-1: afb35050938fd79af58aba857f0c0cbddf9dc460 SHA-256: 5bf0b824e8e71528e30af54b192e4929e724ff4718b30e5cea6e6614e52ef54c
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as a phishing lure due to its image-only nature and embedded clickable link. It contains a large number of external links, suggesting a link farm intended to manipulate search engine results or distribute malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9785

Heuristics 5

  • 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 56 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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=galgotia+electrical+engineering+objective+book+pdf+free+download
    • https://xabifiwalutoku.weebly.com/uploads/1/3/6/0/136085939/vekabekeperixaro.pdf
    • https://pixerogamaba.weebly.com/uploads/1/3/1/8/131871590/wazezamo-neparuzibe-rigipewusonujit.pdf
    • https://zavewixesareput.weebly.com/uploads/1/3/4/8/134855174/423fab.pdf
    • https://cdn-cms.f-static.net/uploads/4454984/normal_603655aa1dad2.pdf
    • https://static.s123-cdn-static.com/uploads/4490917/normal_5ff85921cd117.pdf
    • https://jolaxedepodoz.weebly.com/uploads/1/3/4/7/134708869/bebumogevap-benetetoxijen-jopavama.pdf
    • https://cdn-cms.f-static.net/uploads/4408348/normal_6032cf3098f75.pdf
    • https://static.s123-cdn-static.com/uploads/4376103/normal_5ffa288c492d2.pdf
    • https://maraliva.weebly.com/uploads/1/3/2/7/132712127/1984361.pdf
    • https://jodexozemusokut.weebly.com/uploads/1/3/3/9/133999246/zuxape_fiwufotof_fewadabebezawu.pdf
    • https://kebakikuvoti.weebly.com/uploads/1/3/7/5/137513313/pulowideperi-neruxerixe-gexefewib.pdf
    • https://dilaxala.weebly.com/uploads/1/3/4/8/134865885/tutijesiwipimat-pifitejuzar-gavanut.pdf
    • https://uploads.strikinglycdn.com/files/b9a378fb-ac12-4ad7-8abc-cdcd77067831/how_much_money_do_electrical_engineers_make_per_hour.pdf
    • https://uploads.strikinglycdn.com/files/9d7e7409-c4f1-4964-acc2-7e18c1ba4519/17139165438.pdf
    • https://uploads.strikinglycdn.com/files/ee622e56-58fa-42b6-bca4-216b0effd5a9/zubab.pdf
    • https://uploads.strikinglycdn.com/files/a75680c3-5eb9-41d9-a700-f166910c5285/30987455922.pdf
    • https://uploads.strikinglycdn.com/files/03fdbccd-e9d2-45f7-ad15-79af21bdf88f/lifesmart_infrared_heater_1500_watt.pdf
    • https://uploads.strikinglycdn.com/files/9234778e-48c0-4cd3-a027-b3556361311f/is_sole_fitness_an_american_company.pdf
    • https://uploads.strikinglycdn.com/files/7f68f855-792b-4af1-87ce-a0c2b3303446/types_of_research_report_format.pdf
    • https://uploads.strikinglycdn.com/files/ed9a08cb-d0cc-41df-b2e4-e9ed15f79759/free_body_diagram_practice_problems.pdf