Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3f17374afe37731…

MALICIOUS

PDF

84.1 KB Created: 2020-11-12 14:28:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: e3839653b9ce071c33d33dd3718725d9 SHA-1: da140ab067cde365aeac0b3ebc6b5c509f210ac3 SHA-256: e3f17374afe3773116501635e087d97747af660238d64d89c3c5cdecc4279f1a
96 Risk Score

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 0.9993

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://traffnew.ru/123?utm_term=kjarr+weapons+mhw PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4464319/normal_5fa76acca79f2.pdfIn PDF document text
    • https://vidojibirulon.weebly.com/uploads/1/3/1/0/131070792/bba0b.pdfIn PDF document text
    • https://kojelokawuzu.weebly.com/uploads/1/3/4/3/134341929/fakimivol-sifukuj-puboz-jozowosidir.pdfIn PDF document text
    • https://lelewamopubexab.weebly.com/uploads/1/3/4/3/134324934/bowazilaf_ganuvapekikil_rejufu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393358/normal_5f98c41a340d3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366973/normal_5f877e3dd2722.pdfIn PDF document text
    • https://rumidevuj.weebly.com/uploads/1/3/4/3/134310249/2505829.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/c42312e0-213d-4b11-805f-7e274ac9ee7f/16786955039.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5407704-b6ab-4a6f-8cd8-2c75bcb428fb/ultimate_facebook_hacker_3.5.1_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02c3fa32-78c0-4f94-acaf-265ae102c776/82355611623.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d741.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD741 17604 bytes
SHA-256: 8e94a4830a040f592869704ecc6585e2e78ac23afe3fddd9942983b3cd761375
font_01_sfnt_off00010d94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D94 5164 bytes
SHA-256: f1f4607bbaec8256544c596d8c9ab5dd52d0244c37ec10b06e710e1b8344f1d5
font_02_sfnt_off00011f14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F14 10872 bytes
SHA-256: 90b0947ee005abe1681d3a9607cf06b9c1809ed9e669b5e0e73b2a756ff461dc