Malicious PDF — malware analysis report

Static analysis result for SHA-256 c897123c60bad177…

MALICIOUS

PDF

67.8 KB Created: 2021-03-03 03:48:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: fa7c97b14f47458ded3afccf87d1b403 SHA-1: 2f5a680164dc0f78191ce21f08fa58e827e17e0f SHA-256: c897123c60bad177ba1a3a32dd449f864b27315ca60a277275f03c7c3fd5f1d1
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, specifically identified as a phishing trojan by ClamAV. The document body, though heavily obfuscated, suggests a lure related to book downloads, while numerous embedded URLs point to disposable hosting services, indicating a phishing or malware distribution attempt. The presence of external URIs and link farm characteristics further supports a malicious intent to redirect users to potentially harmful content.

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://lozipotod.ru/award?keyword=side+by+side+book+2+third+edition+pdf PDF link annotation
    • http://shlifovka-pol.website/death_note_light_yagami7lgb0.pdfIn PDF document text
    • http://opt05.ru/how_to_edit_2x2_picture_white_backgroundlasu8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484093/normal_5fdbd29156fc9.pdfIn PDF document text
    • https://junimadegerozo.weebly.com/uploads/1/3/4/0/134096607/gepeku.pdfIn PDF document text
    • http://republvinb.fun/guvewvgr42.pdfIn PDF document text
    • https://nukofagola.weebly.com/uploads/1/3/4/8/134883999/7166692.pdfIn PDF document text
    • http://bunnygummy.ru/70942719263gugz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453336/normal_5ff1ecc71dc98.pdfIn PDF document text
    • http://dawexefif.getenjoyment.net/wekimadixuwekotovewefaxim.pdfIn PDF document text
    • http://winoxolupuvil.getenjoyment.net/can_you_bake_pizza_in_a_toaster_oven.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459791/normal_5fd81a76b4f91.pdfIn PDF document text
    • http://manybigs.space/795147006886xind.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451217/normal_6011f32039c14.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://keregimuw.onlinewebshop.net/resumo_quimica_organica_nomenclatura.pdfIn PDF document text
    • https://s3.amazonaws.com/gafedupeba/best_anime_wallpaper_hd.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_off0000ccf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCF3 5428 bytes
SHA-256: a1b6b78c12450a387d28d30e565120094698c8da34d6f1c7818707522aad10b6
font_01_sfnt_off0000df6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF6B 10232 bytes
SHA-256: 6a4fdd6ce0054af7e0ec837c9025c9117bbb217e8bc4a7bbf94b3c8f2a45fa3c

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