Malicious PDF — malware analysis report

Static analysis result for SHA-256 87cb2d788052016a…

MALICIOUS

PDF

148.4 KB Created: 2021-03-30 22:01:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4c1d4ef22f6d1a3f0201cbe7bdf082a4 SHA-1: edf314c077118e69eb0fc8981a1f40e2556b0e1e SHA-256: 87cb2d788052016a7d86a134e7dcfbca91e4b3053966ddaf41f48c90df36c150
136 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged by a machine learning classifier and ClamAV as malicious. It contains heuristics indicating it's a phishing lure, specifically instructing the user to copy and paste content into a shell, which is a common technique to bypass security measures and execute further malicious code. The embedded URLs suggest it may be part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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://druttle.ru/award?keyword=allen+bradley+plc+programming+manual+pdf
    • http://godumos.22web.org/create_word_template_from_indesign.pdf
    • https://donabetolemi.weebly.com/uploads/1/3/1/6/131637402/nidilefobexeb.pdf
    • https://vobudofokivelux.weebly.com/uploads/1/3/4/5/134599261/guwak.pdf
    • https://pudonaneguk.weebly.com/uploads/1/3/4/7/134767047/ratufanotagebasoki.pdf
    • https://nodirerivono.weebly.com/uploads/1/3/6/0/136052085/xoditivasoxivak-lafogokasiwonuj-sawimituzaj-pomoxenanokapur.pdf
    • https://cdn.sqhk.co/woledowo/sAjghfU/pexanadubadegotovakiw.pdf
    • https://cdn.sqhk.co/wuzufoxo/jejihb3/elderly_cat_staring_into_space.pdf
    • https://pesawuzopedeg.weebly.com/uploads/1/3/5/3/135327269/zumofeb.pdf
    • https://jubibesu.weebly.com/uploads/1/3/1/3/131379113/426095.pdf
    • https://cdn.sqhk.co/josipinu/GhhjiqQ/89682293719.pdf
    • https://rasetakewalufil.weebly.com/uploads/1/3/6/0/136086978/c96a3.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/resisuna/pakoxafilovoxawe.pdf
    • http://mirajiletumumi.epizy.com/zedabijegumefogakeju.pdf
    • https://s3.amazonaws.com/makumapikeze/free_template_cv_psd.pdf
    • https://uploads.strikinglycdn.com/files/d08b5dce-4d01-4d7e-856d-d433b37ee0a9/62615207504.pdf
    • https://s3.amazonaws.com/fakuguvil/97366373322.pdf
    • https://s3.amazonaws.com/jolunenafobuw/employee_lunch_schedule_template.pdf
    • https://uploads.strikinglycdn.com/files/0631e9cc-a1cb-4899-a7d4-9ca76b2ecbef/pisevebamixodoragezoze.pdf
    • http://vinegufoxa.rf.gd/keto_diet_plan_veg.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001eff4.bin
77a4c298d673b6750b3a2598f92b3741e8699e252949146c694238036d0310b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1EFF4 5528 bytes
font_01_sfnt_off000202b4.bin
148a3948ec2e3a506018a0e217e524d470d565d4f2d1660fd691c2992cda1e9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x202B4 12840 bytes
font_02_sfnt_off00022df7.bin
532315dfdc59b350d447ad91845dd8cc72a836e684f536ab9a4305dc5b53fb8e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x22DF7 16204 bytes

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