Malicious PDF — malware analysis report

Static analysis result for SHA-256 43feba270871e204…

MALICIOUS

PDF

68.4 KB Created: 2020-11-16 16:46:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: fb787dade0180235f5b04c8b343767c9 SHA-1: 2542df9a095c1c9d62ba4bd98b9a6c929b4de8ee SHA-256: 43feba270871e204c32ed542cee8fa71ac613007c93d6ca2c15e7f5409b53b12
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 0.9997

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://traffking.ru/strik?utm_term=eq2+ranger+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4476275/normal_5fa686d462f77.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368466/normal_5f889cd672da5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370068/normal_5f95b8f5d20c4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452389/normal_5fb290721a51c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379374/normal_5f90e8c89f383.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449783/normal_5faa56b167b33.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/rokuwapesu/uncle_tom_s_cabin_excerpt.pdfIn PDF document text
    • https://s3.amazonaws.com/satedafadusizo/26387755524.pdfIn PDF document text
    • https://s3.amazonaws.com/baxekojojexusol/64474700912.pdfIn PDF document text
    • https://s3.amazonaws.com/gorajikunobixi/jifapobefutifuvi.pdfIn PDF document text
    • https://s3.amazonaws.com/rorives/zifufikagu.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/mizifemelaxu.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_off0000d06b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD06B 5000 bytes
SHA-256: 81ad15607455b77065baf3763794f3df81c63bbfaa1754ea2f51d0f651c24c73
font_01_sfnt_off0000e176.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE176 10552 bytes
SHA-256: 8645d283d37532d15b9b64466449cff397b88831ea8534e23005c6501142d368

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