Malicious PDF — malware analysis report

Static analysis result for SHA-256 979121c1c22149bd…

MALICIOUS

PDF

81.7 KB Created: 2021-03-30 11:13:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 809ae118cc995bf3bc84912df2b898b9 SHA-1: f3425bfac7a508ba249b221a64757d568c50d5ab SHA-256: 979121c1c22149bd2ca85954cbef41cc98e4715d8e782559c8b83da223dca3fc
166 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious, exhibiting characteristics of a phishing lure. It contains numerous embedded URLs, many pointing to disposable hosting, suggesting an attempt to distribute further malicious content or redirect users to phishing sites. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates a common tactic to bypass gateway security by instructing the user to open a password-protected archive, implying the PDF itself is a delivery mechanism for a more dangerous payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://botokaw.ru/wix?keyword=arma+3+antistasi+server+guide PDF link annotation
    • http://creditscoretracking.info/lopewulaxikuvu0sgi8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380223/normal_6039567ca5084.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481072/normal_605c29b74ed7a.pdfIn PDF document text
    • http://aazzzry.space/bayana_agreement_formatejr56.pdfIn PDF document text
    • http://auto-fishing-rods1.club/21486470562t6k1r.pdfIn PDF document text
    • https://cdn.sqhk.co/wemulekojex/NptA7ha/catfish_season_8_episode_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/pabilere/hhpowBD/gin_rummy_plus_free_online_card_game.pdfIn PDF document text
    • https://cdn.sqhk.co/nigalasiline/eUgi5I6/15463766754.pdfIn PDF document text
    • https://cdn.sqhk.co/xovinexesun/6jjhdig/zombie_shoot_pandemic_survivor_mod_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369520/normal_602aae470fa43.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417325/normal_6003d230a6f87.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413011/normal_601f155058f95.pdfIn PDF document text
    • http://life50it.pro/kipivunipeuq3gy.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2d8fd07-cd95-4420-b1aa-5b82af82091f/mosumakevanok.pdfIn PDF document text
    • https://91953a53-6f32-4f2a-9b2e-0f954541ff31.filesusr.com/ugd/dad90e_4d0c9b757baa4903ad7e0cae2f83aee6.pdf?index=trueIn PDF document text
    • http://jamosafiseb.rf.gd/reactions_of_alkenes_worksheet_with_answers.pdfIn PDF document text
    • https://e2a12503-e9f4-4898-9b1e-00959bf5a9c8.filesusr.com/ugd/1f0de7_6406cdfd115b4c3ea0b99026a964c665.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5e55786-ec93-4dd0-b4cd-f0c1dce43469/pusujenabodamozetoja.pdfIn PDF document text
    • http://jofisakukobi.rf.gd/active_listening_skills_nursing.pdfIn PDF document text
    • http://nawabagaxux.epizy.com/scone_recipes.pdfIn PDF document text
    • https://e082cb0d-9c22-4a21-acb7-e2c6127a51d3.filesusr.com/ugd/ff0c06_75e8e7523f8d417fb5690162d39f3ae0.pdf?index=trueIn PDF document text
    • https://aeedc83c-a41d-4179-9d48-e770e4c4cd47.filesusr.com/ugd/e010a7_00ae07c1b48649cf922ceb86120f039f.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3dad21f-e47c-4a8d-973f-773a6c648cf4/17003738999.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001001b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1001B 5328 bytes
SHA-256: c9efdc58525f6045c5983d28c31f25c11ea25bdb1c3c392b733c006013ff1497
font_01_sfnt_off00011222.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11222 11512 bytes
SHA-256: df155b48f9456ec8ed7fe7fc989e6af1cf97459983771e10cd29c4199d372c59

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