Malicious PDF — malware analysis report

Static analysis result for SHA-256 83c61cea353f3594…

MALICIOUS

PDF

72.3 KB Created: 2020-12-08 04:46:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 2594cdaf6b7b6121f0adfdf0006996dc SHA-1: 72ce4180c5f3b426b8037a3da01cc9f033a39e17 SHA-256: 83c61cea353f3594068eae02bcc63ae73e16357c285a3cc4a8829cc1f699e429
214 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with one identified as a malicious redirector. The heuristic firings indicate a link farm designed to direct users to potentially harmful content. While no scripts were explicitly extracted, the nature of the embedded links suggests an attempt to lead users to phishing or malware download sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffine.ru/strik?utm_term=sith+vs+jedi+powers In PDF document text
    • https://static.s123-cdn-static.com/uploads/4409405/normal_5fc94e008cc59.pdfIn PDF document text
    • https://kivepuwepadile.weebly.com/uploads/1/3/4/3/134392404/xubaralamovi-fekojikila-ramipatalakid-jolanat.pdfIn PDF document text
    • https://lafefozusut.weebly.com/uploads/1/3/4/5/134597047/furoduvodu-pogetavovefik-fimise-sazadiva.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365542/normal_5fa20e2d97c72.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369765/normal_5fa5601b6aa68.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367275/normal_5f9b31bf826b7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374519/normal_5fbb9088db39d.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/lemefofutomapox/manual_for_brita_water_pitcher.pdfIn PDF document text
    • https://s3.amazonaws.com/rutojo/70843442450.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5fb0033e-bbeb-4d72-a4ad-1f4c29cebf44/86840580804.pdfIn PDF document text
    • https://s3.amazonaws.com/winumigutam/drift_hunters_unity_webgl_hacked.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6e3c231-498c-4d46-9120-38a43d7fff17/epson_workforce_pro_wf-4630_printer_price.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cb14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB14 5136 bytes
SHA-256: c7852e98107d33b8f23beb3c65301ef4312715b7f7e030a4913697e9b07eacc9
font_01_sfnt_off0000dca0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCA0 9812 bytes
SHA-256: 26c36da9c1cc0990148d1b986f5d780584f5b0f154feb6009c59eb401166fc5a
font_02_sfnt_off0000fe70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE70 16192 bytes
SHA-256: 5e9decf4a95f93682e404af1de02bab72a1212754f3f9e8c79ec71898c9e4141

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