Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd87b70e75e63b6b…

MALICIOUS

PDF

76.4 KB Created: 2021-01-17 19:55:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 327a67a294382e25dc098aebafaa92d6 SHA-1: 62c8a6c4c9fdc1992948099892e0b507290a3fd9 SHA-256: fd87b70e75e63b6b583568b7d2f39881f488f77a59861c846a2e3c7938473ca1
104 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating a phishing or trojan threat. The presence of an embedded URI pointing to 'trafffi.ru' suggests an attempt to redirect the user to a malicious site or download a payload. The heuristic 'SE_DOWNLOAD_BUTTON' further supports the idea that the document is designed to trick the user into initiating a download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://trafffi.ru/wb?keyword=time%20of%20conquest%20turn%20based%20strategy%20mod PDF link annotation
    • https://cdn.sqhk.co/koxajavu/cidZ26d/bubble_tea_kit_target.pdfIn PDF document text
    • https://cdn.sqhk.co/pekobenew/TGB0hhf/widewolovazu.pdfIn PDF document text
    • https://cdn.sqhk.co/lutidofele/djcGXSp/arena_stage_dc_schedule.pdfIn PDF document text
    • https://cdn.sqhk.co/jawutuwek/Egdheij/dolos.pdfIn PDF document text
    • https://cdn.sqhk.co/genopeno/cjaEigO/watch_live_nfl_thursday_night_football.pdfIn PDF document text
    • https://cdn.sqhk.co/tasokuxu/hlyX9hg/98297086927.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473903/normal_5fe840aac172d.pdfIn PDF document text
    • https://cdn.sqhk.co/velujuvaxal/dighjRZ/gutitekuzil.pdfIn PDF document text
    • https://cdn.sqhk.co/wudenedu/e5hbhgt/wumofetuwikidinerime.pdfIn PDF document text
    • https://cdn.sqhk.co/goberirud/icge3pf/weruxekupiruxap.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/padosumifubobo/18403221937.pdfIn PDF document text
    • http://nezenomawaza.epizy.com/a5_brochure_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/gixawetopoli/nopolaruwidolegu.pdfIn PDF document text
    • https://s3.amazonaws.com/baxekojojexusol/tekinofot.pdfIn PDF document text
    • https://s3.amazonaws.com/gixawetopoli/25304710837.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_off0000ecbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECBF 5624 bytes
SHA-256: 85ad0e82316365ec85f5a646f1d796766f829bc0617c3bc201bba7ca98dda69e
font_01_sfnt_off0000ffc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFC7 10904 bytes
SHA-256: 67d95f16df7f58c4c41f09bb26c96d052a80304d7cd867cb926f4b3411f1d069

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