Malicious PDF — malware analysis report

Static analysis result for SHA-256 df2e046445b7294b…

MALICIOUS

PDF

72.6 KB Created: 2021-01-16 22:20:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 614ec94957944992bd85a343806e1daf SHA-1: 9f3cb0a2c3b138016f00a001dae5906746c35962 SHA-256: df2e046445b7294bdb87c062ad039ba09a6b251c07dd72e8728f8d8ecb7486a9
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of numerous embedded URLs, including one pointing to 'traffking.ru', suggests a phishing or malware distribution scheme. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' further supports this by identifying the document as a link farm on disposable hosting, designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://traffking.ru/123?utm_term=mn+rules+of+family+court+procedure PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4384640/normal_5f8fc0da564d2.pdfIn PDF document text
    • https://site-1196011.mozfiles.com/files/1196011/zagzig_endless_zig_zag_games.pdfIn PDF document text
    • https://site-1177153.mozfiles.com/files/1177153/bookworm_volume_2_free.pdfIn PDF document text
    • https://site-1192107.mozfiles.com/files/1192107/modern_family_season_11.pdfIn PDF document text
    • https://site-1166601.mozfiles.com/files/1166601/69100590525.pdfIn PDF document text
    • https://cdn.sqhk.co/limizolaxa/je4vibi/cake_decoration_art_ideas.pdfIn PDF document text
    • https://site-1175657.mozfiles.com/files/1175657/79139806114.pdfIn PDF document text
    • https://cdn.sqhk.co/lidojuxuxiro/ihih0ic/potiwivapugo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426279/normal_5fd664c2f28cc.pdfIn PDF document text
    • https://cdn.sqhk.co/bitomasijelo/QCXQSgg/fondant_cake_decoration_video_download.pdfIn PDF document text
    • https://site-1173944.mozfiles.com/files/1173944/niwemokivinebij.pdfIn PDF document text
    • https://site-1178309.mozfiles.com/files/1178309/major_mayhem_3_game.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/toguvaju/mini_golf_king_ball_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/mesotodimus/linked_list_c_tutorial.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d105.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD105 5288 bytes
SHA-256: 2098d87311c0fc01108021741e7c58bb7298e0f0063b701e4fe7f298f77bcf74
font_01_sfnt_off0000e2f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2F5 10572 bytes
SHA-256: ad4df5895dd5dab09a147fb8625d51d6b4d3dea63d5860fc115e972bd9644663
font_02_sfnt_off0001071e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1071E 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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