Malicious PDF — malware analysis report

Static analysis result for SHA-256 02677bab50d3e85d…

MALICIOUS

PDF

109.0 KB Created: 2020-12-14 16:05:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 440a2bcffd4178237bdabf5edc62bd53 SHA-1: ba2834c5cdbdaf88d50d67de998131a3aad33519 SHA-256: 02677bab50d3e85d85837ebfb535ce6c94db851b658eff7df711fde712179464
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File T1059.007 JavaScript

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. Heuristics indicate the document uses urgency and a browser installation lure to trick the user into performing an action. The embedded URL, https://traffine.ru/aws?utm_term=guideline+central+line, is likely part of the malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://traffine.ru/aws?utm_term=guideline+central+line
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/61ae292b-7e11-4440-b7f0-71eb72b466a1/lejixirutelu.pdf
    • https://uploads.strikinglycdn.com/files/8002b4b0-e486-4ea5-8dad-e0466170a604/ygopro_android_apk.pdf
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf49f0eaf37e3b6491e4ae/1606371824837/what_is_a_bank_letter_of_instruction.pdf
    • https://s3.amazonaws.com/gotenukevepunin/autocad_2017_size.pdf
    • https://static1.squarespace.com/static/5fc0cf2e60f2895dc1e766a0/t/5fc1e426145a8629dcf533ad/1606542375256/mississippi_high_school_football_rankings.pdf
    • https://s3.amazonaws.com/zinudipir/jones_meat_market_climax_georgia.pdf
    • https://s3.amazonaws.com/kelukakeb/zekerufilabedodo.pdf
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf625218e72e5fdbcf9442/1606378070174/game_guardian_speed_hack_apk_download.pdf
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdee0c3570fb44d1c7ef75/1606282765071/eastland_career_center_phone_number.pdf
    • https://static1.squarespace.com/static/5fc5811288c99b6d37c67bb2/t/5fce303505ddc9599d4c33c6/1607348279002/light_balloons_price.pdf
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd127d61a76734b5a9df8f/1606226559882/naruto_dating_simulator_unblocked.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00016e76.bin
794853751c8be6da37dde1b210ff1c004fb4dd71e089f2714b0ec519c100faf9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16E76 4784 bytes
font_01_sfnt_off00017ec7.bin
7a8c0842a85094e5945af7c3c9ad20c734e6ef398ad95a742588b82f511e5167		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17EC7 11916 bytes

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