Malicious PDF — malware analysis report

Static analysis result for SHA-256 69f15656c7fa3032…

MALICIOUS

PDF

70.0 KB Created: 2020-11-24 05:30:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: fd2a9076c341118375b57d3145aef0ef SHA-1: b302337c3bcb5d54e9e3a9fe244e7dc344969691 SHA-256: 69f15656c7fa3032bb2208cf8009e0901b82b8d1e8ebfc72bf92a06f056073de
156 Risk Score

Malware Insights

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

This PDF was flagged by multiple heuristics, including ML and ClamAV, as malicious. It contains a large number of external links, indicated by the PDF_SEO_LINK_FARM heuristic, with one prominent URL being trafftec.ru. The presence of embedded URLs and the overall structure suggest an attempt to redirect users to a malicious site or a collection of 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
  • 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.
  • 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://trafftec.ru/strik?utm_term=ponchador+cable+coaxial PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4468537/normal_5fab5038525ea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371261/normal_5f8b6b24176c1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492871/normal_5fb88fee36176.pdfIn PDF document text
    • https://vefubonipit.weebly.com/uploads/1/3/4/7/134719522/889a01e085034c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471464/normal_5fa83398654bb.pdfIn PDF document text
    • https://sazinuje.weebly.com/uploads/1/3/4/5/134588850/4599601.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/wixikarago/convert_automatic_to_manual_mustang_68.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc8665db-a505-49a9-9de9-b3e53f0d72c8/56004761135.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dabb8bee-754d-48d1-ad8a-e6749eb43125/voce_tem_que_lanar_um_foguete_praticamente_do_nivel_do_solo.pdfIn PDF document text
    • https://s3.amazonaws.com/megodipewukitoj/seasons_and_month_usa.pdfIn PDF document text
    • https://s3.amazonaws.com/liguwubore/taxekorumatitijosike.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5dfc02d0-fce9-4447-a952-7e119b6c9bb7/11378450734.pdfIn PDF document text
    • https://s3.amazonaws.com/wazagidonux/samsung_gear_manager_app_download.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_off0000d5dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5DC 5060 bytes
SHA-256: 1003c4686e25b384a52845fdae9b39496faec42bd55b304d51263a328d31506c
font_01_sfnt_off0000e709.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE709 11076 bytes
SHA-256: b20c4e697a79fb77db3422d4b60f8a751ed3c3f3974a88eedc09b4cb10639b7a

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