Malicious PDF — malware analysis report

Static analysis result for SHA-256 acb6637414a02294…

MALICIOUS

PDF

92.3 KB Created: 2021-01-16 05:58:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 173927529343bf726a2a48edfacb7333 SHA-1: 2d59921fc37349dd5b7ba57c1624cde274c98c52 SHA-256: acb6637414a022947252e6476c60c594165a43365a4d283dd66e6bb002fd16f9
184 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical finding for linking to known malicious redirector infrastructure. The embedded links, such as 'https://traffine.ru/123?utm_term=experiencing+god+devotional+pdf', are likely intended to lead users to phishing sites or download further malware. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool sometimes used to create malicious documents.

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 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://traffine.ru/123?utm_term=experiencing+god+devotional+pdf In PDF document text
    • https://static.s123-cdn-static.com/uploads/4491398/normal_5fc4a5d0e6fbb.pdfIn PDF document text
    • https://veborikaja.weebly.com/uploads/1/3/4/3/134317734/5111760.pdfIn PDF document text
    • https://site-1173612.mozfiles.com/files/1173612/vidugarexi.pdfIn PDF document text
    • https://pimupaxepa.weebly.com/uploads/1/3/1/8/131857198/desurirekepufok-mobewal-futatet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470543/normal_5fd3a41fcb93f.pdfIn PDF document text
    • https://site-1178741.mozfiles.com/files/1178741/best_shooting_base_in_2k20.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426816/normal_5fc9878880ff7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391642/normal_5feb253ec18c4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367268/normal_5f9bd3b2b5d9d.pdfIn PDF document text
    • https://novafonofijufi.weebly.com/uploads/1/3/4/4/134480525/22fbad32085.pdfIn PDF document text
    • https://site-1200561.mozfiles.com/files/1200561/abbaigaru_movie_song.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vonutavekip/7550675280.pdfIn PDF document text
    • https://s3.amazonaws.com/varolexexus/animal_magnetism_quest_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/dotivaf/articulos_cientificos_ejemplos.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012d69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D69 5232 bytes
SHA-256: 7ab0f6217386ff0c1c9d6e2e2438ce26db99a1e22d566a42905b1d8a215c497a
font_01_sfnt_off00013f57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F57 10756 bytes
SHA-256: ac0ac3abafc0141ba1ff000a8f4a2004074092b121fee2eefc00b8939a0e86c2

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