Malicious PDF — malware analysis report

Static analysis result for SHA-256 46860f3ac83216e2…

MALICIOUS

PDF

157.7 KB Created: 2021-05-21 06:51:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: e0b3c542befb30b122babacb1f3cebeb SHA-1: 7b95bf567d48450f9333c1d1a18f90804909d1f4 SHA-256: 46860f3ac83216e23de08fb4be50764bad8aa0ebd76d41000192adeb967e8345
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://botokaw.ru/strik?utm_term=principles+of+development+5th+edition+pdf+reddit PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4414501/normal_603b78df42675.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460980/normal_5fe6ecee670f4.pdfIn PDF document text
    • https://dekoreriso.weebly.com/uploads/1/3/7/5/137501726/1749547.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368235/normal_5fc67986e7eb3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369185/normal_600798e18c411.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392457/normal_5fcf7f768c28f.pdfIn PDF document text
    • https://neletataw.weebly.com/uploads/1/3/1/3/131398134/d321a94f1cfc09.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409627/normal_60436a330e274.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421641/normal_603c446cde828.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366989/normal_60514b900a82a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374682/normal_5fcc00dee38d3.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/zarelusipofox/chassis_engineering.pdfIn PDF document text
    • https://s3.amazonaws.com/nonabafat/moruvenavosudekafuvudetar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c74dabc-d4fa-4367-b448-0309b14e2b03/19827706797.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d23210c-ae67-4783-bf8b-ad05400a1c2b/nawusabifuzine.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02456a00-8916-4b3d-aa80-6ea29a016d4a/building_a_rocket_mass_heater_step_by_step_to_finish.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_off00022d31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22D31 5368 bytes
SHA-256: 1ed987cf91421dd8a9ef18141cbbbfc3bf4b0f49019c5767fcb87b02e2f86a1b
font_01_sfnt_off00023f5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x23F5A 12188 bytes
SHA-256: 27d2512ca8bbb7f134df532f50d82fe9633767718dbb06dd02aa757f9d7573c8

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