Malicious PDF — malware analysis report

Static analysis result for SHA-256 7259b4cbb0915762…

MALICIOUS

PDF

72.5 KB Created: 2020-12-22 12:57:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 6ff10e86038ae0a26ab5a7509c0d8eb4 SHA-1: 3fc8a9a9a1e8405f8a8c5a08c8e2dfb7b176dba0 SHA-256: 7259b4cbb0915762eabd453b8740021c40d238e92770f9b904fae9fa0f143d21
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to trick the user into visiting a malicious site.

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=car+scanner+obd2+elm327 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4370285/normal_5f980b6810409.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482190/normal_5fc19cfb4d772.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365563/normal_5fc794f416576.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464315/normal_5fada51ea1e81.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370319/normal_5fda6085de560.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381756/normal_5fe12d0c1dc65.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413110/normal_5fe03680d4d0f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454982/normal_5fcd6e0d25fa7.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/fosawef/1499350126.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5210820e-e2a2-42a1-a3c1-aac9074d7ddd/sistemas_de_estructuras_heino_engel.pdfIn PDF document text
    • https://s3.amazonaws.com/bisegilupuf/bromatologia_em.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisigetizoxif/business_law_textbook.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 8

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_off0000c785.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC785 5508 bytes
SHA-256: 3963dee7d01290022b63153e187af0fa701a1694fd33cfe647a824a4f4d1b2d8
font_01_sfnt_off0000da25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA25 11004 bytes
SHA-256: 6c4fce6955a1522a1dab816393c36745f5ab08c8240f28cfb29cb11b850e7b7d
font_02_sfnt_off0000ffc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFC1 16204 bytes
SHA-256: 532315dfdc59b350d447ad91845dd8cc72a836e684f536ab9a4305dc5b53fb8e

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