Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c004575d35ab5dc…

MALICIOUS

PDF

71.7 KB Created: 2021-05-29 14:12:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 7f20608bfb6331306765de415a602678 SHA-1: 4a4b837429872d4306145b8fbe2996cebb8d7971 SHA-256: 7c004575d35ab5dceb7ca69f91092d444dd700d297fd9d1680b86d2b57de0969
196 Risk Score

Malware Insights

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

The PDF contains heuristics indicating it is part of an SEO link farm and a redirector, specifically designed to lure users to a malicious URL. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a malicious lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://xezojetit.ru/wb?keyword=how%20to%20check%20meter%20reading%20bill PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4385852/normal_604d1563e87fa.pdfIn PDF document text
    • https://xixirebuwujesi.weebly.com/uploads/1/3/5/9/135989839/gobitaxijezovoz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428069/normal_6053355a40f5d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481834/normal_5ff4f4f17ef6c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445573/normal_606343e80c923.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492529/normal_5fd86bdb1ff9c.pdfIn PDF document text
    • https://getomipo.weebly.com/uploads/1/3/4/4/134403721/rezitesuwefo.pdfIn PDF document text
    • https://xovodozavaso.weebly.com/uploads/1/3/1/0/131069890/watewebufesi.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/4fbd3c87-a19b-4779-833f-e502a5f594a3/descargar_libro_evidencia_que_exige_un_veredicto.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc56b5ac-e1a3-4e25-af10-de07d1de9c19/what_does_boo_radley_symbolize.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/961da84f-83fa-4922-aef9-42cceae537a3/pajakadotatabebatefuzixe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7dec3cad-f59d-412d-bfb9-c79b33d05c05/seidels_guide_to_physical_examination_an_interprofessional_approach_test_bank.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/347dccfc-dfca-4062-aed1-2a2ef6f3f1f6/my_lawn_mower_starts_but_wont_keep_running.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d8edc29-7403-4348-8a4b-34fb7de72763/gididaxunogufejazininapi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8399f532-f056-4c0d-b6db-9e1faef4cd7c/fogat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40c5d6d4-420b-4158-8caa-b231f20de1f0/how_does_a_covalent_bond_hold_atoms_together_gcse.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44dc3f38-2c49-47c8-b13c-89f761776d3a/64417980077.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d754f8b3-96fa-487a-8b6e-b1f5502862cc/plc_programming_basic_instructions.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d953.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD953 5432 bytes
SHA-256: b0ccac2fd3e648a0f2309c334a9a1a34daf687154651651b2d79d94cd96cee14
font_01_sfnt_off0000ebaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBAF 11108 bytes
SHA-256: aa5d44dd311dfb3ca48e98c0bb0fb93cad67caa3ff4efee5e6a590c0d9e97028