Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0f538d185a4b0b6…

MALICIOUS

PDF

96.8 KB Created: 2021-03-27 11:45:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ccbde079219c18a4e209e0954f626dd0 SHA-1: ee3dc98c201edcfe26c68afcd50e62cec769a5a6 SHA-256: f0f538d185a4b0b65f2930bf8db45a51da8320e1598a7d51d3525a1792f81616
124 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics as malicious, including a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The document contains numerous embedded URLs pointing to disposable domains and link farms, suggesting it is designed to redirect users to potentially harmful content or phishing sites. The presence of external URIs and the overall structure point towards a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6309

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 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://druttle.ru/award?keyword=georgicas+virgilio+gredos+pdf
    • http://fezelegafefuv.mywebcommunity.org/jitoneteb.pdf
    • http://oneitshop.info/throw_blanket_basket_ideaszbudh.pdf
    • http://idealslimitalia-official.site/beliredavawudodepodorigesi2whh.pdf
    • https://cdn-cms.f-static.net/uploads/4465131/normal_60225f20154b1.pdf
    • http://thestablestl.com/zonoxofulagomgxzk5.pdf
    • http://kulotufiw.mypressonline.com/81121618093.pdf
    • http://beritox.medianewsonline.com/jitigibajixoteminewur.pdf
    • http://trells.space/hable_con_ella_torrent2fcq1.pdf
    • http://golixudib.mypressonline.com/white_tiger_marvel_netflix.pdf
    • http://larokamexi.sportsontheweb.net/boy_scouts_medical_form.pdf
    • http://zegererevez.medianewsonline.com/lujolazavijidepa.pdf
    • http://magic-world.site/ice_hockey_game_toronto_schedules57b9.pdf
    • http://natikolom.site/epson_v700_vs_v800_comparisonryu69.pdf
    • https://static.s123-cdn-static.com/uploads/4420476/normal_6003ae243d32e.pdf
    • http://vijexibat.mywebcommunity.org/tiwagoluseg.pdf
    • http://byseles.xyz/pygmy_hedgehog_care_sheetx3vae.pdf
    • http://teenagetutor.online/brain_training_exercises_for_anxietyf6hmg.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://dd67658a-cc17-4e1c-bca5-42bf299a485b.filesusr.com/ugd/07a440_f7b6da4aa36546aca73e84ba51ebca6b.pdf?index=true
    • http://rogofideb.onlinewebshop.net/download_foxit_phantompdf_full_crack_for_mac.pdf
    • https://27420876-d215-4860-9a72-f48db0d0c320.filesusr.com/ugd/4062c2_a580dd8ae7174e86a94ed26cf0d674c4.pdf?index=true
    • https://2df7536a-ab64-4dd3-a6ca-98e0eca144a4.filesusr.com/ugd/de578f_8aff7eeba4974bbf9fae40054fe027ba.pdf?index=true
    • https://0e733887-fd72-4d21-8b10-0a39cafbc931.filesusr.com/ugd/1e4d10_958966f960db46e0b4f1dc422e79e353.pdf?index=true
    • https://21c505bb-01ca-4817-a549-4ed1ebba5040.filesusr.com/ugd/7d7105_68a6498945244fa5919ba140827f4909.pdf?index=true
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000166d7.bin
fe547a571b6fd74dcf97012bed17d7677eff37d41d8dc1ca345499e47362e7d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x166D7 5416 bytes

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