Malicious PDF — malware analysis report

Static analysis result for SHA-256 40c5e7879ae92ade…

MALICIOUS

PDF

74.9 KB Created: 2021-03-22 13:12:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b6c0c7385608da934adfd165fc0285e9 SHA-1: d613b0a81982368179b69b4a81b903ad746972a1 SHA-256: 40c5e7879ae92adea5a34c9f1815644d7e49bc2afc8ded436824aff31c2f7190
186 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many hosted on disposable domains, indicating a link farm or SEO manipulation scheme. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution through these linked documents. No scripts were extracted, but the PDF structure itself is indicative of a malicious campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://soxebez.ru/wix?keyword=feel+it+still+roblox+id+code PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4387924/normal_602eb8ad90ba7.pdfIn PDF document text
    • https://murenelu.weebly.com/uploads/1/3/1/8/131856612/7160917.pdfIn PDF document text
    • https://cdn.sqhk.co/devisofage/BhjaXji/rezolimidaditedeburofimu.pdfIn PDF document text
    • https://rifodajawu.weebly.com/uploads/1/3/0/7/130739776/fuduziguxa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378830/normal_603ee68e3de94.pdfIn PDF document text
    • https://lidutefavova.weebly.com/uploads/1/3/4/0/134012516/vunetotaferaf-vosub-ladoxi-sudora.pdfIn PDF document text
    • https://nojefawagalubab.weebly.com/uploads/1/3/4/2/134266261/wejuza.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444655/normal_60514ea8e2f5f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463809/normal_604329044649c.pdfIn PDF document text
    • https://cdn.sqhk.co/ketalidukepi/8gfif5L/chargepoint_merger_presentation.pdfIn PDF document text
    • https://wujawosekeg.weebly.com/uploads/1/3/4/7/134712458/46770b69c3.pdfIn PDF document text
    • https://cdn.sqhk.co/rufosopufu/hcjfcX7/76175568061.pdfIn PDF document text
    • http://xajaweronasuxo.22web.org/12589517633.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://451b78f8-089e-4d4d-bc4b-60abb621f7e6.filesusr.com/ugd/7ef0dc_2cb19b91f0a543c384cd8699263e83dd.pdf?index=trueIn PDF document text
    • https://3f740848-0e57-4b51-8596-564812021bec.filesusr.com/ugd/cbe17c_c87db151342b4369b2f4e679d9b1b6cf.pdf?index=trueIn PDF document text
    • https://05282879-aed3-4f16-ac14-d534add4d4bd.filesusr.com/ugd/0f8b7c_ddebeda05c5d4963a57594759a8de9c0.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/23e93d0b-a63c-455e-bbaf-4131bd1914d3/dazevafejezodaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e70fd3ee-af47-4f84-88e7-8c24ba4f8bd7/king_serial_numbers_saxophone.pdfIn PDF document text
    • https://a95edb9d-21e5-46e4-bb1b-b1fdf66a5dae.filesusr.com/ugd/09e34a_ade5b7f4aa0e454fab107c61be51870b.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/e636ec75-846d-464f-9480-629d8ef1c4c9/what_is_a_peer_reviewed_scientific_study.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/10661a1c-50e4-4efd-930a-4210c37d5d10/90548685726.pdfIn PDF document text
    • http://lagixilutami.rf.gd/mexelarajazitufolaxiwetu.pdfIn PDF document text
    • http://taribizuka.epizy.com/boropidopofototajufopek.pdfIn PDF document text
    • https://0cfe495c-9a5f-46a1-a5f3-fb21b6211bac.filesusr.com/ugd/7aabb2_1509cb5743c648879501c5710b415ba9.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/1aaf3f34-fa59-489e-b064-b7c687f8f8f1/essay_my_favourite_book_holy_quran_in_english.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_off0000deac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEAC 4884 bytes
SHA-256: 75fcc7e467f3ee281b70e5f47d8b5f40fab8a54c5f5ac55bd8dbcaea7adc541b
font_01_sfnt_off0000ef51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF51 1888 bytes
SHA-256: 3db0edf0d6764ac3b5c075e51844234502b2ca99c825d09852fc8733abb3e66f
font_02_sfnt_off0000f864.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF864 11260 bytes
SHA-256: 3e0990f849343b3cc2d538306b8e72b5bb856563355fb5e3df8313069fade06c