Malicious PDF — malware analysis report

Static analysis result for SHA-256 2deb8d8aac64e796…

MALICIOUS

PDF

66.8 KB Created: 2020-12-30 19:42:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 7204e75c0866d9e8ccd9b6d840d052cc SHA-1: ca58ca846d5d2fce66816b77a75bcf9f0ccd9fbf SHA-256: 2deb8d8aac64e7962d3ffea7f01749cf1699efa707f258c1fbbd0359df904e25
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The embedded URL points to a suspicious domain, likely serving as a lure for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://trafficel.ru/123?utm_term=d%2526d+human+deities PDF link annotation
    • https://cdn.sqhk.co/gabisolovima/2Wmiehj/bucket_list_meaning_in_urdu.pdfIn PDF document text
    • https://cdn.sqhk.co/golomamone/dhaPOXd/7624971815.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480393/normal_5fd87b9eafcab.pdfIn PDF document text
    • https://cdn.sqhk.co/tukawezezo/LOWMhe8/cracker_barrel_breakfast_menu.pdfIn PDF document text
    • https://cdn.sqhk.co/vuguvorexi/iPoyibc/cute_animal_coloring_pages.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451028/normal_5fc03891d4d89.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421612/normal_5fd2225615440.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388283/normal_5f9777e01d89e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386851/normal_5fcbcb6f8287d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466368/normal_5fb9e84a90c91.pdfIn PDF document text
    • https://cdn.sqhk.co/gikasiful/NmgiiKL/harvard_business_manager.pdfIn PDF document text
    • https://cdn.sqhk.co/moviferu/gigfAOA/28753924216.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/6fe97f78-d456-4cad-af97-270d4157ea18/los_elefantes_no_vuelan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60970a18-1775-41c2-a08e-c1c4f3ff4bf6/nha_phlebotomy_study_guide_2013.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_off0000cccc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCCC 4156 bytes
SHA-256: bb1702a9e9b617346157f9ea6f36cc14559c37d4a4a2cf683ebd57dce9d2c082
font_01_sfnt_off0000dafb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAFB 10548 bytes
SHA-256: 072dc688cfd7f461ada3e6aa5ca18dff2f2127132e46ca0eb26986f504a291ca