Malicious PDF — malware analysis report

Static analysis result for SHA-256 38c4f125974d252f…

MALICIOUS

PDF

69.4 KB Created: 2020-11-14 07:09:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 72944381e1e51a72bbd1be86f3db5f89 SHA-1: 4d7430bfc9c48ceb4a2402cee5902ef2b84ea2ef SHA-256: 38c4f125974d252f67886764398d0692f575db99dd3e5194c340786693ad0d1a
214 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to redirector infrastructure and potentially malicious content farms. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM indicate a strong intent to direct users to harmful sites. The ML classifier and ClamAV detection further support its malicious nature. Although no scripts were extracted, the document's structure and embedded URLs strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://gettraff.ru/strik?utm_term=monster+prom+secret+endings+guide In PDF document text
    • https://finiluxexolije.weebly.com/uploads/1/3/1/8/131856594/73b219fb6820e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458163/normal_5faf5c42d7208.pdfIn PDF document text
    • https://xukexepizebeb.weebly.com/uploads/1/3/4/5/134592509/gobasi.pdfIn PDF document text
    • https://kinojapi.weebly.com/uploads/1/3/2/3/132302846/devililitiwinade.pdfIn PDF document text
    • https://funiwulew.weebly.com/uploads/1/3/2/8/132814073/4454659.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/f8c5acd0-7817-40b0-9bb0-b639a2f4d3a8/organic_field_corn.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a8dafe0-66e6-4de0-8db0-62e215ce9766/19483719072.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9984544f-2f23-469d-adfd-7ab1c9db13aa/marijuana_plant_growth.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2203e3f5-44de-4382-a1ab-fe139700a10f/safe_room_door_ideas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/284718af-1292-435c-a6e2-5ee35e753aa1/88828530692.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c75fc242-a2bd-4e9a-a461-18ab91aa77ce/song_of_solomon_questions_and_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6bf8bbf1-985d-43d4-8430-cf5593e3468c/canon_print_inkjet_selphy.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/055ae710-0faa-4a5c-8263-719820369764/78785500165.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bea24df8-6862-455d-8b33-9cf6761bc521/61823751327.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec59d08d-9c8d-4db1-9065-2fca8795aa1d/moana_online_free_movie_full.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e0b03aa-2f27-4495-9ffb-e72fb9d87733/hawaiian_sunrise_shell_jewelry.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_off0000d371.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD371 5156 bytes
SHA-256: d709c64f45d60718f842e865cf5c98d692740126803331d51e962a7b0e7b17a1
font_01_sfnt_off0000e4f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4F4 10292 bytes
SHA-256: 5bc73a0011ee6a6002708681a1582cf8fb07135dc1112db7ed9305e277fd4318

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