Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0f409874013b9ee…

MALICIOUS

PDF

69.5 KB Created: 2021-01-25 17:53:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 6d4c0eef61aea83fc78d11320e6a6850 SHA-1: 36bfcc44f515278e83ff9787eacb7d3c8518d92c SHA-256: d0f409874013b9ee88815d5caa5dc0e239fd2400b80eb49f168c20d7cb2a4d2f
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded URLs, with one specifically pointing to 'trafftec.ru' and including a 'utm_term' parameter suggesting a phishing or advertising lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a malicious document designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafftec.ru/123?utm_term=laundry+service+agency+glassdoor PDF link annotation
    • https://fawimerena.weebly.com/uploads/1/3/4/6/134630635/sorijuw.pdfIn PDF document text
    • http://walkover.me/vamureebhf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365634/normal_5fe6a76f37a59.pdfIn PDF document text
    • http://site-shop.xyz/orange_ball_gown_wedding_dressmn3sy.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373516/normal_5ffc31b1b5ca6.pdfIn PDF document text
    • https://cdn.sqhk.co/mewobonovagi/eRshgjf/39387725146.pdfIn PDF document text
    • https://vaxatimiroxak.weebly.com/uploads/1/3/4/6/134617636/lapofezepimal.pdfIn PDF document text
    • http://trelon.fun/best_new_movies_on_hulu_september_20208ou68.pdfIn PDF document text
    • http://neo-tp.ru/zokirugadegaaep.pdfIn PDF document text
    • http://bitipusefotas.66ghz.com/participial_adjectives_exercises.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379603/normal_600100cca7e4d.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/wujanozo/android_barcode_scanner_source_code.pdfIn PDF document text
    • https://s3.amazonaws.com/lefemijip/vegetarian_cannibal_hd_movie.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_off0000d1f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1F0 5208 bytes
SHA-256: 07d78cf0b1f58567addb86727b458f3c3554b42a4df1cafffc1f518219f6b1b7
font_01_sfnt_off0000e3ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3CA 11008 bytes
SHA-256: add44578f538e0a610be4bb33835a952d8649066b4a89ccf0c706607a123e6e6

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