Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2702852cd01307c…

MALICIOUS

PDF

69.1 KB Created: 2021-02-12 01:00:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: a3014e3bee94f72f79edc09749bab825 SHA-1: 2914352608ca027c70e5eb2043d8e2417d9cea17 SHA-256: f2702852cd01307c25232279ea6dea54a81a17443991e852b9e15b6e4e301c19
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs pointing to disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of 'utm_term' parameters in some URLs indicates an attempt to track user engagement with the lure, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jacksth.ru/123?utm_term=john+gbc+full+apk+download PDF link annotation
    • http://avtovishki-msk.ru/376063136691ymoi.pdfIn PDF document text
    • https://lagonola.weebly.com/uploads/1/3/4/8/134851586/5047468.pdfIn PDF document text
    • https://cdn.sqhk.co/wubofuse/hi3gdig/34953352572.pdfIn PDF document text
    • https://tezifotunojoke.weebly.com/uploads/1/3/0/7/130776805/3608069.pdfIn PDF document text
    • https://cdn.sqhk.co/tumowara/jj3thj4/stellar_hunter_trapper_build.pdfIn PDF document text
    • https://nukofagola.weebly.com/uploads/1/3/4/8/134883999/8214912.pdfIn PDF document text
    • http://detonic-deutschland.website/context_clues_worksheet5lxuh.pdfIn PDF document text
    • https://cdn.sqhk.co/konafomaz/gjhi490/casse-_o-_player_chrome_cassette_pack.pdfIn PDF document text
    • http://5gusevshop.space/good_boys_google_docs8k00t.pdfIn PDF document text
    • https://cdn.sqhk.co/guzamuvi/fgggjOl/ms_pac_man_game_boy_color.pdfIn PDF document text
    • https://pasojifet.weebly.com/uploads/1/3/0/7/130776368/41749672686c1.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/devuxuzejozam/geometric_mean_between_two_numbers_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/sakaburepagase/55883329952.pdfIn PDF document text
    • https://s3.amazonaws.com/wusone/galoper.pdfIn PDF document text
    • https://s3.amazonaws.com/dibedamoka/mewuruvefob.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_off0000bd5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD5D 5064 bytes
SHA-256: edec41b5d6f5568c168226b2efae542c806cc7a04e0c8e4719a957ed49c5574a
font_01_sfnt_off0000ce9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE9D 12756 bytes
SHA-256: 8167f9c55a89fb556304ef6a5597005b46ded1db7f225ace1a7050ebd03dea70
font_02_sfnt_off0000f7d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7D8 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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