Malicious PDF — malware analysis report

Static analysis result for SHA-256 529ed3a38d899a6b…

MALICIOUS

PDF

73.5 KB Created: 2020-12-14 16:11:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 7e2293296208ae1704472c5437896a0c SHA-1: d5e2bb158105acad6af20a70762e6dfc26ed65b3 SHA-256: 529ed3a38d899a6b2953e590235c5d3af5a611d503951d70f5a7cdabd774360e
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was detected as malicious by a machine learning classifier and ClamAV. It contains an embedded URI pointing to a suspicious domain, traffset.ru. While no scripts were explicitly extracted, the presence of an embedded URI in a malicious PDF commonly indicates an attempt to redirect the user to a phishing or malware download site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffset.ru/123?utm_term=berserker+awakening+guide+bdo PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4445326/normal_5fd6974171227.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372960/normal_5f8a7032bb585.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482002/normal_5fd70b9b9ab5a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404500/normal_5f9b792fcf073.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374839/normal_5f9f80ae47335.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/dudujopixejikug/68410354225.pdfIn PDF document text
    • https://s3.amazonaws.com/bezegoluzose/flood_brook_school_calendar_vt.pdfIn PDF document text
    • https://s3.amazonaws.com/zobuwubedak/100th_day_of_school_art.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/384d8510-dccb-485c-aca3-0a7e3235c841/86268246786.pdfIn PDF document text
    • https://s3.amazonaws.com/xarojapi/95230593121.pdfIn PDF document text
    • https://s3.amazonaws.com/bubodeliza/bill_gates_height_cm.pdfIn PDF document text
    • https://s3.amazonaws.com/desenaz/deep_town_mining_factory_cheats.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 6

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cc3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC3B 5308 bytes
SHA-256: c126e5ce993ee783f592713c6ebe09f3442d4d7786bcb7381d283e9d4c7cbafd
font_01_sfnt_off0000de6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE6D 11080 bytes
SHA-256: a8222911fae2fadf8de63202316e40df287851bf52a0960197398c8d71fa289e
font_02_sfnt_off00010453.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10453 16116 bytes
SHA-256: bbf267bdf4ac853042b967417f4f5c1aa22afeb20001dc0c34f122ab84a6e6bd

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