Malicious PDF — malware analysis report

Static analysis result for SHA-256 695d51f9513d9cd9…

MALICIOUS

PDF

83.2 KB Created: 2021-05-20 13:44:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a9ebf868c048eddd1ee5d2a7d150a918 SHA-1: be43941ebcd75d540ec6c911f5fa01a6feaf2eb4 SHA-256: 695d51f9513d9cd9857aeec7c2f14c007ffacb6a7b0cc36c2ae6f3be26315ccf
244 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to disposable hosting or redirectors, indicating a link farm designed to direct users to malicious sites. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://dafemum.ru/strik?utm_term=consiste+em+obter+energ%25C3%25ADa+electrica In PDF document text
    • https://cdn-cms.f-static.net/uploads/4454277/normal_605d1a04721ea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450350/normal_604f8dfdce7a1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426409/normal_604a83d99c696.pdfIn PDF document text
    • https://bumozirejukije.weebly.com/uploads/1/3/5/3/135340746/4c4c1446b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477651/normal_5fca7842ce792.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465691/normal_6044cb1eb932f.pdfIn PDF document text
    • https://finuvowevemez.weebly.com/uploads/1/3/5/3/135397693/bejodobudodinex-zovisate.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425501/normal_6001f4e044d82.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374545/normal_606e1e2b300f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387939/normal_5fd643ff01c6d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470016/normal_6013eb7ddb472.pdfIn PDF document text
    • https://pananufizusa.weebly.com/uploads/1/3/4/4/134445813/tumolixal-ponozese-pelevepap-jubugimuna.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464542/normal_6018cb7a28d51.pdfIn PDF document text
    • https://nidikibadut.weebly.com/uploads/1/3/1/4/131453007/bidurawo.pdfIn PDF document text
    • https://jimutovila.weebly.com/uploads/1/3/1/8/131856698/1334525.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449630/normal_5fc7e993db930.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/194b5440-f788-4654-b743-e23fdbeee9c3/milew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/caba31d8-f4ba-4df2-9c27-2f8fe228de4d/codigo_ascii_de_acento.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f254740a-a49d-4caa-bee8-a4c596760110/stopping_by_woods_on_a_snowy_evening_poem_meaning_in_hindi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/038bd85b-7e66-4673-88d1-a0e935a40b28/english_literary_devices-_definition_with_examples.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_off0000fa86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA86 5220 bytes
SHA-256: 1530744bb9b25300da31048e9a7c504303cc442d6310d51116eff96561304ac5
font_01_sfnt_off00010c27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C27 2116 bytes
SHA-256: 8db65adc699bed2ed4e99b174e414cace916d9ae25f4e5597e3d94de4d1667c8
font_02_sfnt_off000115cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115CF 12864 bytes
SHA-256: f561adaffc0b168b11ae4e84c1323c63c3253c667e99d542536d68a613c6c1d7