Malicious PDF — malware analysis report

Static analysis result for SHA-256 560703280db41404…

MALICIOUS

PDF

50.6 KB Created: 2021-03-21 21:04:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 67133b2e38961d28ed9b0e3493cc4e38 SHA-1: d5ef22306b01189081c947edd8a2338058ab83a4 SHA-256: 560703280db41404a2452fa0d5cab1fee2f92892b5ffc04d71043a22e22f8fff
204 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs an image-based lure, presenting a screenshot of text to entice users to click an embedded link. The link redirects to a large, SEO-optimized collection of PDF files hosted on disposable domains, a common tactic for phishing or distributing further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6386

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 50 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://lozipotod.ru/strik?utm_term=how+to+change+picture+size+on+macbook
    • https://taxinureku.weebly.com/uploads/1/3/0/8/130814469/rudegusede_xatabaw.pdf
    • http://jarewitof.mypressonline.com/22289673843.pdf
    • http://medway24.com/47398184144kt5tu.pdf
    • https://monotuwisax.weebly.com/uploads/1/3/4/5/134589760/detob.pdf
    • https://wimelavejitovuv.weebly.com/uploads/1/3/4/5/134597731/nomide.pdf
    • http://creditchecktotal.info/napujajurovokeyjx46.pdf
    • http://fevinoreniwelik.sportsontheweb.net/sifukotemiminopaxojik.pdf
    • http://zalanikovuz.iblogger.org/25961621117.pdf
    • http://copyrightnotices-form.com/84490656457xwp66.pdf
    • http://mopexaxurip.getenjoyment.net/jared_kushner_peace_plan.pdf
    • http://molotkov.site/gofapede0xa4c.pdf
    • http://yourcy.com/how_to_train_for_football_season_workl85cb.pdf
    • http://gixipures.sportsontheweb.net/sugejidipugabaxufepewasi.pdf
    • https://44f39d5c-a655-4437-91b6-62b11e148e71.filesusr.com/ugd/eb4c03_84619d342761423fba1a8e2971e56bec.pdf?index=true
    • http://pesafitibum.epizy.com/ioi_properties_group_berhad_annual_report_2017.pdf
    • https://b8f7bc2e-5f90-466c-a76c-b8215bfdb3ae.filesusr.com/ugd/9717d9_52a657d1bb4d4ffebfac909b3632c28a.pdf?index=true
    • https://eb62986f-0112-409a-9ebe-777412bc5c19.filesusr.com/ugd/26938b_d5cd29a798924001ae4342452f0d57de.pdf?index=true
    • https://0d555108-1732-4721-8d72-76d747b2053a.filesusr.com/ugd/1b0481_5841147f60844e9383783b80c1323edd.pdf?index=true
    • https://a3de454e-1598-42bb-a259-4eb69c42f179.filesusr.com/ugd/fb5067_8b49e7ad8df14bf696096e0bc23cb96f.pdf?index=true
    • https://8546b567-499d-44cb-812b-f4cb210fa0cc.filesusr.com/ugd/1f0b74_14cce069dc4841bd8c726cb140a8ebf5.pdf?index=true
    • https://59e5a08b-0d8d-455f-a3a7-35a3b781ab3e.filesusr.com/ugd/784815_7175b9a055624e09af3368b9b758262d.pdf?index=true
    • https://a1c9bafd-2917-4c1b-b79c-a4b44a941470.filesusr.com/ugd/f0f215_52da05fb2f234c4d8c80d7e25441142f.pdf?index=true
    • http://salajire.onlinewebshop.net/brochure_design_template.pdf

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