Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4dd3d265914e932…

MALICIOUS

PDF

81.9 KB Created: 2021-03-23 21:49:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1bf6d5139ec8b03f52181b0f135be70d SHA-1: e2daa90093c35e8796e7d604fb71f0c9aa7580f7 SHA-256: f4dd3d265914e9325c31ebfe77f1be507f4b10ffbf0a1fb52fe5cd85ff534757
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with a significant portion pointing to disposable domains and exhibiting link farm characteristics, strongly suggesting a phishing or malware distribution campaign. The ML classifier and ClamAV detection further confirm its malicious nature. While no scripts were directly extracted, the PDF structure and embedded URIs are indicative of an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://jumiwimov.ru/strik?utm_term=all+clad+slow+cooker+insert+oven+safe PDF link annotation
    • https://s3.amazonaws.com/gedesisumi/silitusewaluzibuxisekinu.pdfIn PDF document text
    • http://tekplafond.xyz/define_quantum_dot_chemistry743fj.pdfIn PDF document text
    • http://goromeo.club/33142497269srr93.pdfIn PDF document text
    • http://nuveclovet.xyz/how_do_i_get_my_nespresso_vertuo_out_of_descaling_modeqbedj.pdfIn PDF document text
    • https://cdn.sqhk.co/jigitovewuk/igjE8W9/shadowlands_alchemy_trinket.pdfIn PDF document text
    • http://boevoenlp.com/iraga_iraga_dj_mix_audio_songavz23.pdfIn PDF document text
    • http://storezone.info/86946642321kebb4.pdfIn PDF document text
    • http://razvivatel.blog/998380034793p8ys.pdfIn PDF document text
    • https://s3.amazonaws.com/pisedij/67253226809.pdfIn PDF document text
    • http://reliables.ru/jenis_penelitian_menurut_metodeqp79e.pdfIn PDF document text
    • https://cdn.sqhk.co/xazewizol/zZYNhej/business_operations_manager_resume_examples.pdfIn PDF document text
    • http://tryadasert.online/ironhead_workshop_manualbz5ia.pdfIn PDF document text
    • https://cdn.sqhk.co/wareberefiz/DZujjhn/40158996594.pdfIn PDF document text
    • https://cdn.sqhk.co/xukonobos/jhp6xcb/black_plus_size_formal_party_dresses.pdfIn PDF document text
    • http://closemaze.com/carl_sagan_pale_blue_dot_image7usl2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://romezegipoxo.epizy.com/tapexesib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d63fb4d-403e-4b04-b3ad-1dd2d090862b/worx_wg309_2-in-1_chainsaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6a4e8f9-a5d3-4028-8961-f6a6742714a0/dyson_mini_motorhead_review.pdfIn PDF document text
    • http://jokilezitewoj.epizy.com/19013690461.pdfIn PDF document text
    • http://tuvugagud.epizy.com/capitale_du_monde.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3355944d-af7a-4de1-83ef-ac1266fd1253/honda_4514_engine.pdfIn PDF document text
    • http://sivumokevidosib.rf.gd/82005915414.pdfIn PDF document text
    • http://meduzifovum.epizy.com/jalawixezisotoj.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f4a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4A2 5008 bytes
SHA-256: c0714e05b7a8e1acfd0f3dd38dcce15f44485ab8adabc7950736ec4d807f34ee
font_01_sfnt_off000105c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105C9 11240 bytes
SHA-256: 72505c2327482904c656beb23a0301aef476d8104da478d5961343bacc36977a
font_02_sfnt_off00012c03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C03 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f