Malicious PDF — malware analysis report

Static analysis result for SHA-256 02d1e953c656bfc5…

MALICIOUS

PDF

73.6 KB Created: 2021-02-28 06:40:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 4a816b52f6296c662c8aa27d6ed444d5 SHA-1: ef6990705e5589b6a138c495c492d673a6d33eaa SHA-256: 02d1e953c656bfc510ccd8e3a807bccab7ed3bbab34e8465bf5921b1e149ece0
134 Risk Score

Malware Insights

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

The PDF document contains embedded URLs and heuristics indicate it is a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. The presence of a download button lure further supports this, aiming to trick users into downloading a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://maypoin.ru/123?utm_term=hp+compaq+8000+elite+audio+drivers PDF link annotation
    • http://jedomagisuw.getenjoyment.net/sarozigolanogizemeta.pdfIn PDF document text
    • http://pedrons.space/nursing_dosage_calculations_practicef76m5.pdfIn PDF document text
    • https://cdn.sqhk.co/xulawajikigi/eihijI8/75157698101.pdfIn PDF document text
    • http://forecast.bet/54805616472732je.pdfIn PDF document text
    • http://big-ita.space/starting_strength_results_over_504yz09.pdfIn PDF document text
    • https://cdn.sqhk.co/wugoxoxowex/jgfiiii/26796199975.pdfIn PDF document text
    • http://pidawudimo.scienceontheweb.net/love_story_chords_no_capo.pdfIn PDF document text
    • https://cdn.sqhk.co/leporolino/3ghbIha/theme_park_clicker_idle_craft._roller_coaster_incident.pdfIn PDF document text
    • http://losinglotterynumbers.com/58613339367159n.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://segudufarus.epizy.com/email_campaign_strategy_template.pdfIn PDF document text
    • http://radiviwix.onlinewebshop.net/monster_korean_movie_2014_cast.pdfIn PDF document text
    • http://nanamiw.epizy.com/buniridejapabadumis.pdfIn PDF document text
    • https://s3.amazonaws.com/xalexojaxipud/compact_idiosyncratic_gapped_alignment_report.pdfIn PDF document text
    • https://s3.amazonaws.com/dozore/51203533420.pdfIn PDF document text
    • http://redotikami.rf.gd/kifaferopubixo.pdfIn PDF document text
    • https://s3.amazonaws.com/wazorixekunafob/phenol_formaldehyde_resin_adhesive.pdfIn PDF document text
    • http://muxolisakij.epizy.com/99826569139.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_off0000dfd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFD9 5704 bytes
SHA-256: 123752649feb8636206f1bdbf3dad8641805dc65d8875cf8c887511ebd6c03cf
font_01_sfnt_off0000f322.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF322 11292 bytes
SHA-256: a8046674449f3615117f12f3966454c3ff1461123f1b21129aae42f2e817375c

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