Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1331a4beb1694e2…

MALICIOUS

PDF

83.8 KB Created: 2021-03-14 02:39:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: afe43fc3d4c145b9e5b834ee0daec39a SHA-1: 814899c9fbd04200c0828c3889353d71732a1e32 SHA-256: e1331a4beb1694e2533f4e110f81eb2865ff3802a3a460c92486f29942f6a583
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains and link farms, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The presence of external URIs and the link farm heuristic confirm the attack pattern of luring users to potentially harmful sites.

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://golowaki.ru/123?utm_term=ahirani+song++sawan+na+mahina+ma PDF link annotation
    • https://cdn.sqhk.co/moboguvafuze/njdVzgj/idle_trainer_hack_hackmod._vip.pdfIn PDF document text
    • http://telemprom.xyz/329686853377tfuu.pdfIn PDF document text
    • https://s3.amazonaws.com/remavuj/analyst_notebook_9.pdfIn PDF document text
    • https://cdn.sqhk.co/vilubofi/i7whdij/bumosol.pdfIn PDF document text
    • https://cdn.sqhk.co/foroboreb/yijidih/3891782609.pdfIn PDF document text
    • https://cdn.sqhk.co/tumupowe/jgvoNgf/desunolunaro.pdfIn PDF document text
    • http://fojudesekuxujef.22web.org/14535002731.pdfIn PDF document text
    • http://legiontry.online/85370902916xl02.pdfIn PDF document text
    • https://cdn.sqhk.co/vikaxokaso/jilUhim/duraduzukimiwi.pdfIn PDF document text
    • http://zewamiluwevegif.22web.org/76971432976.pdfIn PDF document text
    • https://cdn.sqhk.co/geroterunetu/ehdnzgh/fepizaxukomomisofuvexud.pdfIn PDF document text
    • https://cdn.sqhk.co/numokafas/iaMKPig/35165866757.pdfIn PDF document text
    • http://petersikdar.com/folugakokiwifg1.pdfIn PDF document text
    • http://frontglass.xyz/machine_transformation_carton_ondul_ouedkniss1say1.pdfIn PDF document text
    • https://s3.amazonaws.com/vebisop/romijotiraxasadaposumila.pdfIn PDF document text
    • https://cdn.sqhk.co/bimolixumotu/hf5UHih/29708743743.pdfIn PDF document text
    • http://baranaydin.org/what_size_windshield_wipers_do_i_need_for_a_2013_ford_focussjcez.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://nakepusigazu.epizy.com/presente_simple_con_adverbios_de_frecuencia_en_ingles.pdfIn PDF document text
    • http://sugexure.rf.gd/pawenun.pdfIn PDF document text
    • http://lalukegadugubu.epizy.com/animals_martin_song_pagalworld.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

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_off0000e96b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE96B 5148 bytes
SHA-256: 5e2d7de24decb6854e0f1ab25f0defc80fbb3698ea50a9ca568793f1fe0fa20e
font_01_sfnt_off0000fad0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAD0 9876 bytes
SHA-256: 1fd5ba2d56c2e43680aff0986411f99b2f2dea503bc58ea227e7883f8628173e
font_02_sfnt_off00011c84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C84 10760 bytes
SHA-256: 86e38fcfb6bb99a3b78845c8429848bb2fe414437cb934b5d76abbfc9027e11f

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