Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d972a347f73a40e…

MALICIOUS

PDF

74.6 KB Created: 2021-03-25 12:23:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 141defe4bf3996e149d015ccb6c082fe SHA-1: 778dffa6c9a1dec93831f06d2e9dacbc192afc2e SHA-256: 7d972a347f73a40ee4023fa7f6920caafad1272f8678968672c3ab0f97cd7117
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a malicious domain, disguised as a search result. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. No scripts were extracted, but the PDF structure and embedded URI are sufficient indicators of a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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
  • 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://kuzutuzo.ru/wix?keyword=muscles+testing+and+function+kendall+pdf+free
    • https://cdn-cms.f-static.net/uploads/4475382/normal_5fe831f178db5.pdf
    • https://static.s123-cdn-static.com/uploads/4417830/normal_5ff4058941293.pdf
    • http://kusafomidufe.mywebcommunity.org/timarujirusozuj.pdf
    • https://static.s123-cdn-static.com/uploads/4448984/normal_5ff52e39be1c2.pdf
    • https://cdn-cms.f-static.net/uploads/4495694/normal_60233e1844283.pdf
    • http://busijizi.medianewsonline.com/exercicios_de_portugues_analise_sintatica.pdf
    • https://cdn-cms.f-static.net/uploads/4377924/normal_602acf2a53ea1.pdf
    • http://zokugorevat.mywebcommunity.org/guia_ceneval_enfermeria.pdf
    • https://cdn-cms.f-static.net/uploads/4408589/normal_605b01a419b87.pdf
    • https://static.s123-cdn-static.com/uploads/4385631/normal_5fee8a748d810.pdf
    • https://static.s123-cdn-static.com/uploads/4367952/normal_6002393c8b715.pdf
    • http://newyearshop.site/aermotor_windmill_assembly_instructionsr2cor.pdf
    • http://regse.website/5841706720446j3o.pdf
    • https://cdn-cms.f-static.net/uploads/4375206/normal_60571daae0092.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/rojalexipokadaz/nisenafufiramabosijesedu.pdf
    • https://s3.amazonaws.com/lorifawuvawot/criminal_record_check_manitoba_form.pdf
    • https://s3.amazonaws.com/sukobogixe/devils_lake_fishing_report_wisconsin.pdf
    • https://s3.amazonaws.com/papuja/5968594512.pdf
    • http://kagijido.myartsonline.com/ancylostoma_duodenale_y_necator_americanus.pdf
    • https://s3.amazonaws.com/godoremitiwuja/crockpot_cook_chicken_drumsticks.pdf
    • https://s3.amazonaws.com/minabiwa/besowelagomufakaxip.pdf
    • https://s3.amazonaws.com/wofaxil/akash_name_ringtone_fdmr.pdf
    • https://s3.amazonaws.com/fekife/58053642781.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_off0000e5d9.bin
b21cd3dcd0f93f745aa09e5e0cef2279bab31d30800b056465e56afd1deaac99
pdf-font-stream PDF embedded font (sfnt) at offset 0xE5D9 5392 bytes
font_01_sfnt_off0000f854.bin
c8cc1cbf3af8f207c793690a08101311ab01801bfab980579db7b7b2f7ab749f
pdf-font-stream PDF embedded font (sfnt) at offset 0xF854 10856 bytes