Malicious PDF — malware analysis report

Static analysis result for SHA-256 201f5f4eddbcc0ff…

MALICIOUS

PDF

61.9 KB Created: 2020-11-24 06:14:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 0a769e21b22b45d9db6fa86723172623 SHA-1: d454c59d2fc51a0e8243f8a05900fc4c8e59a053 SHA-256: 201f5f4eddbcc0ff1e3cae6f06d78285fc88e19a77d5c40f905822e78135b9b9
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a large number of external links, many hosted on disposable domains, indicating a link farm designed to redirect users. Several heuristics, including PDF_SEO_LINK_FARM and PDF_SEO_DISPOSABLE_LINK_FARM, confirm this behavior. ClamAV also detected this file as Pdf.Phishing.Trojan, further supporting its malicious nature. The primary goal appears to be directing users to potentially malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://trafffi.ru/strik?utm_term=badtameez+dil+mp3+pagalworld+downloa PDF link annotation
    • https://bitekiparoduj.weebly.com/uploads/1/3/4/0/134017536/fegalekowugefok-makida-jerimejut-zufuxale.pdfIn PDF document text
    • https://fawefugixizim.weebly.com/uploads/1/3/1/3/131383791/vakotivim.pdfIn PDF document text
    • https://musisemikalig.weebly.com/uploads/1/3/4/6/134694348/578533fc03003.pdfIn PDF document text
    • https://golosoruxo.weebly.com/uploads/1/3/4/3/134339442/setun.pdfIn PDF document text
    • https://kivifakan.weebly.com/uploads/1/3/4/8/134870172/8787815.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370555/normal_5f8999835f87b.pdfIn PDF document text
    • https://nevonanopovew.weebly.com/uploads/1/3/4/3/134335048/1064287.pdfIn PDF document text
    • https://vavapeta.weebly.com/uploads/1/3/4/8/134848771/tuxifapadusovamumem.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/24145d2a-a4de-49aa-be36-5a2d0ca2da8b/korkut_boratav_tC3BCrkiye_iktisat_tarihi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6887785-0348-4bab-aeb1-810e8a4594ec/elastic_collision_formula_final_velocity.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_off0000b1f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB1F7 5456 bytes
SHA-256: 48b27f13c2d2d90226aaab868fd4c2587bf3974645105692e7586a13ae55bb5f
font_01_sfnt_off0000c48b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC48B 11648 bytes
SHA-256: 1b3d7bbcfa1d578e3233b65ffdbc65527ea87d1a7df4f4642593a02c41e3080f

Open this report in the interactive analyzer, or submit your own file for analysis.