Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0068e310a578b88…

MALICIOUS

PDF

79.6 KB Created: 2021-02-24 23:21:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: c494fdcaec827def7d41d8389715c3ef SHA-1: e8fedcab57a443ea17f0413ab7c82eb1cd26136d SHA-256: c0068e310a578b88d91ced9e9ea748f2064744421a64d9bdefd2b969e5b050e0
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The document body, though heavily obfuscated, contains references to "Altered Carbon season 3 actors" and uses wkhtmltopdf, suggesting a lure. Numerous external URIs were extracted, many pointing to link farms on disposable hosting, which are commonly used to redirect victims to phishing or malware sites. No scripts were extracted from this sample, but the overall pattern suggests a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://druttle.ru/award?keyword=altered+carbon+season+3+actors PDF link annotation
    • https://cdn.sqhk.co/sumefixes/idajdQk/21096734818.pdfIn PDF document text
    • http://ductsunlimitedins.com/unicorn_coloring_book_color_by_numbercpz0p.pdfIn PDF document text
    • http://glawerry.online/gikirirakanavapamij3l21v.pdfIn PDF document text
    • http://sesalon.xyz/witimeraberosoxhyt1.pdfIn PDF document text
    • http://keto-menu.online/845484507323w5ek.pdfIn PDF document text
    • http://gujavagidaxo.iblogger.org/lidixulakiliza.pdfIn PDF document text
    • http://regsenatvumen.website/battle_for_the_galaxy_download_for_pcgl3ko.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427785/normal_5fcb02556ca70.pdfIn PDF document text
    • https://cdn.sqhk.co/zogobadakedu/hhhXNYQ/poughkeepsie_tapes_based_on_true_story.pdfIn PDF document text
    • http://domastmsk.space/flight_simulator_x_download_crackeado5mz48.pdfIn PDF document text
    • https://cdn.sqhk.co/ligumorik/rghgfNH/eye_color_change_snapchat_lens.pdfIn PDF document text
    • http://hristogrigorov.com/conjugaison_avoir_a_tous_les_tempsovgui.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390661/normal_5fe4c82c1598d.pdfIn PDF document text
    • https://cdn.sqhk.co/letonolomo/1LY1mjc/podoxagijoj.pdfIn PDF document text
    • http://granitmetrospecstroy.ru/jatoperagebomazetojesapi0nlkl.pdfIn PDF document text
    • https://cdn.sqhk.co/tedalome/fgghiif/97869423441.pdfIn PDF document text
    • http://blognews.top/exercice_polygone_ce2_en_lignehw8qp.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482418/normal_5fca0934f0e73.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pomisukiso.rf.gd/43202583692.pdfIn PDF document text
    • http://jijojigig.epizy.com/a_savita_remix_song.pdfIn PDF document text
    • http://mugudupo.epizy.com/burner_management_system_in_boiler.pdfIn PDF document text
    • http://roxuriwiladubew.rf.gd/chrome_apk_packager.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_off0000f087.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF087 3304 bytes
SHA-256: 7c54c13321a22b13e8c8cf75e560e9151677e82cfd7fb4553fa360d909f90a16
font_01_sfnt_off0000fc6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC6C 5228 bytes
SHA-256: 19c98fb45b4d86080962256f619566427c6e254575dac32543e7ee653401f31f
font_02_sfnt_off00010e3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E3C 9996 bytes
SHA-256: 55a2c45938ce120f162d8dc06ffbfad1615d6debddd7eb58811afa14b30cd1ac

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