Malicious PDF — malware analysis report

Static analysis result for SHA-256 5297e19262dd3433…

MALICIOUS

PDF

83.6 KB Created: 2021-04-08 22:53:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d9dd9bff9f864dee904d1aacbeb9a51d SHA-1: 953b8a68e4d9e0281c6628dd958af33b0f100655 SHA-256: 5297e19262dd3433a7108dd3b3add9504bbf6e8c9158b505322e6d4653917595
186 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many hosted on disposable domains, indicative of a link farm or phishing operation. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were extracted, the PDF structure and embedded URLs point towards an attempt to redirect users to potentially malicious content, possibly for SEO manipulation or to host phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://vilenefex.ru/strik?utm_term=husqvarna+323r+ii+manual PDF link annotation
    • http://junumidutuzakox.getenjoyment.net/analogies_for_critical_thinking.pdfIn PDF document text
    • https://cdn.sqhk.co/libobivole/jhMgjge/ice_hockey_skates_ccm.pdfIn PDF document text
    • https://cdn.sqhk.co/tovasodoj/iKhjbhf/ziwikak.pdfIn PDF document text
    • https://cdn.sqhk.co/xexisini/4giijJW/bandwagon_advertising_techniques_examples.pdfIn PDF document text
    • http://viwivomoxori.22web.org/19791392564.pdfIn PDF document text
    • https://cdn.sqhk.co/keximovib/qFifjaO/13582255624.pdfIn PDF document text
    • https://cdn.sqhk.co/woxekivepi/hbgcqic/30_day_fitness_challenge_workout_at_home.pdfIn PDF document text
    • http://xijipeva.mypressonline.com/accident_proneness_theory.pdfIn PDF document text
    • http://excschool.ru/rivixefuziparxgoyn.pdfIn PDF document text
    • http://apple-fruit.space/39010032467ra7e6.pdfIn PDF document text
    • http://brosbass.com/4371476308isr3b.pdfIn PDF document text
    • http://puwufonizezez.22web.org/afaan_oromoo.pdfIn PDF document text
    • http://bukipumil.mypressonline.com/business_application_software_2.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://sawesupunozigiv.atwebpages.com/79309238881.pdfIn PDF document text
    • https://28546a20-d0cc-4b82-bb4f-6711990cd5a3.filesusr.com/ugd/0bcf16_c1760abf680e4c42ac261c68f95526a5.pdf?index=trueIn PDF document text
    • http://mutodilevo.epizy.com/benkelman_beam_test.pdfIn PDF document text
    • http://sumolusekoximu.rf.gd/vox_ac15c1x_vs_ac15hw1x.pdfIn PDF document text
    • http://fojosotum.myartsonline.com/nelejomumaroxilo.pdfIn PDF document text
    • http://zutaturusix.myartsonline.com/34327720974.pdfIn PDF document text
    • https://be56f97b-0727-4a8e-a141-4155b83e75ac.filesusr.com/ugd/5034d0_a09a7299c699478f8e8b62da7a46f11f.pdf?index=trueIn PDF document text
    • http://muliwavanebebo.onlinewebshop.net/vukomazirexexerojavotenam.pdfIn PDF document text
    • http://filipebed.rf.gd/sultans_of_swing_alchemy_tab.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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e46b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE46B 5272 bytes
SHA-256: 73942ac41426111e4d572c4e3e6ed4746b7608924e63c8e0502727b694a11418
font_01_sfnt_off0000f648.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF648 11060 bytes
SHA-256: 3ca9e6282d0b3a1817afa7fb16429aa76ae51a7d8763e743d9b93ad92aa3c688
font_02_sfnt_off00011c4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C4B 16096 bytes
SHA-256: 9853a4a918762215dfcba51349555ff48d39e56332efe18e2f333ca30d8a5b61
font_03_sfnt_off00013151.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13151 4012 bytes
SHA-256: 92361f73a2ec4782dba32e0e9e9cfeae7e6a867272159ca21ce3564319609964