Malicious PDF — malware analysis report

Static analysis result for SHA-256 424223804d45a458…

MALICIOUS

PDF

79.6 KB Created: 2021-05-03 10:34:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: cef49eefd9afde0c70f6d52a53f9a948 SHA-1: 58d1a45f611be36798fc1ec93a206fa0f7aafedd SHA-256: 424223804d45a458141b919482e459e9d816fde18f8827f8d3dd3a1cfbe68fd3
186 Risk Score

Malware Insights

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

The PDF contains a significant number of external links, many hosted on disposable domains, indicating a link farm or phishing attempt. The ClamAV detection and ML classifier strongly suggest malicious intent. While no scripts were directly extracted, the PDF structure and external URLs point towards a malicious document, likely delivered via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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 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://ponafet.ru/strik?utm_term=is+selling+produce+profitable PDF link annotation
    • https://cdn.sqhk.co/gevagedubop/gdia6ji/best_armor_for_minecraft_dungeons.pdfIn PDF document text
    • https://cdn.sqhk.co/zosiwikiw/aijIhhf/gedija.pdfIn PDF document text
    • https://cdn.sqhk.co/zepipawetopi/gejdgia/prison_break_season_5_episode_9_full_episode.pdfIn PDF document text
    • https://cdn.sqhk.co/zujijivopuju/hj3S8ja/tisesovogep.pdfIn PDF document text
    • https://s3.amazonaws.com/bifamomove/comparing_fractions_worksheets_grade_3.pdfIn PDF document text
    • https://cdn.sqhk.co/veladaxuzeba/fjc9tSk/galaxy_attack_alien_shooter_cheats_android.pdfIn PDF document text
    • https://s3.amazonaws.com/gonasidupij/76272966341.pdfIn PDF document text
    • https://s3.amazonaws.com/domegagowevag/fasovutikip.pdfIn PDF document text
    • https://xekexudaxojow.weebly.com/uploads/1/3/4/3/134365032/goxutokupisego.pdfIn PDF document text
    • http://fresh-ita.fun/watch_pixel_online_free_megavideomwfbw.pdfIn PDF document text
    • https://s3.amazonaws.com/dakebesuvum/how_do_you_do_a_10th_step_in_aa.pdfIn PDF document text
    • http://wide-do.top/material_science_engineering_internshipsiylad.pdfIn PDF document text
    • https://febodume.weebly.com/uploads/1/3/2/8/132815732/javujuluxamemuv.pdfIn PDF document text
    • https://furikokazi.weebly.com/uploads/1/3/5/3/135399827/1ddc95ad.pdfIn PDF document text
    • http://bestpriceforukraine.xyz/pixel_car_racer_toyota_crownw19ox.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/5dc6e6f1-2ddd-4341-b323-c4b4b48ca46d/dometar.pdfIn PDF document text
    • https://264aa3b4-28a3-4a3b-9cf4-afdf28ba9476.filesusr.com/ugd/28a074_5471fd48c192460fa73f3b3104491e03.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/788a5fe3-832f-4f19-863b-03a13cb4cd8e/molecular_biology_jobs_houston.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49bbd601-c515-417c-bfd4-fa5cbfd6ed52/why_does_my_dog_put_his_toys_on_my_feet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/643799ee-baa3-41c6-b00d-5bf47e34fcf3/75897610964.pdfIn PDF document text
    • https://7afcd0b8-98df-42a4-afe0-9544d44c9539.filesusr.com/ugd/74e9cf_87df4bde710d4f5e81ac724379bef094.pdf?index=trueIn 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_off0000f6bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6BC 5400 bytes
SHA-256: 6d6071eb568fc0d487600669580a57048589ebfffb5a8f58e34da49a9ad222fa
font_01_sfnt_off00010923.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10923 11204 bytes
SHA-256: 89be1e9f825284d9f20fb9172c1ca0d74baae662e8e45541bb0a754256068db3