Malicious PDF — malware analysis report

Static analysis result for SHA-256 06468b5be82f9265…

MALICIOUS

PDF

76.1 KB Created: 2021-01-13 22:38:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 7c3d31b907b21b7da60a2a24b2fedb52 SHA-1: ec13f0e161e8433c7c60c76c4e2712b69df68cfc SHA-256: 06468b5be82f92652a0db2a94a19cad8da2678a77091e4a9f2f442400ba3d582
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous external links disguised as a TV show recap, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of malicious activity, likely leveraging JavaScript for redirection or payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://traffine.ru/123?utm_term=barry+season+2+episode+7+recap PDF link annotation
    • https://site-1176339.mozfiles.com/files/1176339/61035020497.pdfIn PDF document text
    • https://dibatavuxod.weebly.com/uploads/1/3/0/7/130775672/5359718.pdfIn PDF document text
    • https://cdn.sqhk.co/jetekujob/BhiLkpC/jutolewepiwopuvanufuv.pdfIn PDF document text
    • https://site-1181123.mozfiles.com/files/1181123/20428221349.pdfIn PDF document text
    • https://cdn.sqhk.co/waderapal/jthghfO/jaxipapokabo.pdfIn PDF document text
    • https://site-1173152.mozfiles.com/files/1173152/land_rover_off_road_experience_eastnor_castle.pdfIn PDF document text
    • https://cdn.sqhk.co/gadukupuwe/hejaaCO/98899482385.pdfIn PDF document text
    • https://site-1178414.mozfiles.com/files/1178414/50652287389.pdfIn PDF document text
    • https://cdn.sqhk.co/kesufetumo/heR1Tjc/52145759255.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451737/normal_5ff7575175ab4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382789/normal_5fc15b641da83.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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 8

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_off0000ee57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE57 5396 bytes
SHA-256: 8721ef57255a8b6170fc2e4f635df107b5b3a5c715fcd6d259613a1074282055
font_01_sfnt_off000100d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100D8 10324 bytes
SHA-256: d5068c147fd60ebf12ba616535d0ea4c3ed73d95ec8e6de8538ade06c460e94f

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