Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8b89c617b274e72…

MALICIOUS

PDF

62.4 KB Created: 2020-11-20 01:20:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 3b4fa5f2ac40badc526fe7de077ffa0c SHA-1: b7b1603053baeb0cb1dacb7ade3f05883f73b3d3 SHA-256: e8b89c617b274e721240492d91fb00e6a4db778736a5d1a6acc9b051f80feef6
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 0.9995

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://trafffe.ru/strik?utm_term=valence+electrons+worksheet+answer+k PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4403417/normal_5fb60affb0b6f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449603/normal_5f9ee40c5f42e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371498/normal_5f912be670255.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445128/normal_5fb266813120e.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/zuxime/30025394446.pdfIn PDF document text
    • https://s3.amazonaws.com/wizedumi/votur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51fc3f7a-0f47-432c-8911-cc3b094a1e89/90779813.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d7d8540-fac3-41a1-806e-4599c84bbfc4/logitech_x-_530_setup.pdfIn PDF document text
    • https://s3.amazonaws.com/vabedafozo/zopuresofa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2d435fc-7809-49c9-97b6-709dfe73b6b7/19571079868.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

Related samples 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b79b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB79B 5008 bytes
SHA-256: f33a89de704f6eb43a7e36c5534a808155e6522e33811becfbc2e34a5a72225a
font_01_sfnt_off0000c8b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8B1 10736 bytes
SHA-256: 12fefa92ce423977d11ff9f70851da116f40946bdf60d9e08e0339a6eeb3cb5a

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