Malicious PDF — malware analysis report

Static analysis result for SHA-256 cde0f20d0b907a5e…

MALICIOUS

PDF

76.6 KB Created: 2021-01-04 04:54:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 0cd0653ee00b7ff92ce124d988dce008 SHA-1: 4c9ae3a9acb34147ce9f71a2c8629d35af048810 SHA-256: cde0f20d0b907a5e96dbac79a23c7abbee92b8d665252b481b2b517a1a8d568c
196 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to other PDFs, suggesting a link farm for SEO purposes. One prominent URL, 'https://trafffe.ru/123?utm_term=getjar+apk+download+pc', indicates a lure for downloading APKs. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://trafffe.ru/123?utm_term=getjar+apk+download+pc PDF link annotation
    • https://jategolotigani.weebly.com/uploads/1/3/4/8/134882723/zuwabezune-bawej.pdfIn PDF document text
    • https://cdn.sqhk.co/vavuvalegel/fgfgchi/fivufe.pdfIn PDF document text
    • https://cdn.sqhk.co/tuseliwi/wjfgiid/tulipola.pdfIn PDF document text
    • https://cdn.sqhk.co/fitamorigob/yhdhetS/parts_of_the_body_puzzle_game.pdfIn PDF document text
    • https://pepomujotopulog.weebly.com/uploads/1/3/4/8/134873529/2fe2d88606a.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/jonora/telufavimekewitizat.pdfIn PDF document text
    • https://s3.amazonaws.com/jivagajamav/plant_cell_vs_animal_cell_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/nitizobuv/calibre_free_for_xp.pdfIn PDF document text
    • https://s3.amazonaws.com/liguwubore/educare_child_protection_in_education_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7e13453-8e7d-41c2-b628-21cc9481a394/telecharger_wondershare_player_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/legenapi/stoichiometry_volume_volume_problems_worksheet_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/acf0382b-59ae-48b8-aa12-7bbde829d8ce/xanathar_s_guide_download.pdfIn PDF document text
    • https://s3.amazonaws.com/wukevirenesu/annotated_bibliography_format_sample.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_off0000ef00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF00 5152 bytes
SHA-256: 3622979d9d8add760542de1a358a26e1a7e10be8432f7a2973cac419fbe537f2
font_01_sfnt_off000100b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100B1 10872 bytes
SHA-256: f35c789c9134a97d689e3cbecfed9010a3fab754d42a0cb570654bc15bc0b3d0

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