Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd2c7897abf26c81…

MALICIOUS

PDF

69.8 KB Created: 2021-01-03 21:06:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: d0d65416143b8f98dd4a5717f88d0a0e SHA-1: 81ccedce9280556993a2fa16fc410ad4e7d5321a SHA-256: fd2c7897abf26c814ce4120228019c5d4c6f52c302f1c8e8f1fa055dd9521af6
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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://trafficel.ru/123?utm_term=richardton+health+center+address PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4460975/normal_5fc3091b267fa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367665/normal_5f8cfe64a7d1e.pdfIn PDF document text
    • https://sobexezawatu.weebly.com/uploads/1/3/4/9/134903145/zixupisoxijum-kufixobapugu-fexejeginasuj-rixubot.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465938/normal_5fa3eb7b64b39.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481286/normal_5fc88eb4a9920.pdfIn PDF document text
    • https://tamilazubi.weebly.com/uploads/1/3/4/6/134604156/wowow-xafonukovadazu-gefixilunegoze.pdfIn PDF document text
    • https://cdn.sqhk.co/fawabanof/KJ8nljb/city_of_houston_warrants_check.pdfIn PDF document text
    • https://lusizemanu.weebly.com/uploads/1/3/4/1/134108609/vepas_sadone_dazinomekaveda.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/64c35361-9ae2-4c89-8c79-847047b1bb0b/jejalom.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_off0000d45d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD45D 5032 bytes
SHA-256: 1516a511f022d96e638af946ff54d7d204ad1dd7e3284294c326f7d42d31a2f0
font_01_sfnt_off0000e575.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE575 11004 bytes
SHA-256: c0a9ff1bf0777cd61e3046dcfb005485998271ee839d38869bb936da4f0af7a6

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