Malicious PDF — malware analysis report

Static analysis result for SHA-256 8af46a9096ab3b06…

MALICIOUS

PDF

68.9 KB Created: 2021-01-19 02:40:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: bf973aee2c86744d08f4b6ca6126d75a SHA-1: db2537c32bb611b727a3051a4b4db4118ebf2d71 SHA-256: 8af46a9096ab3b0631d6e3f708888fb13797d17072c272f69c7e612bb691348c
196 Risk Score

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://jottigo.ru/123?utm_term=3+bar+map+sensor+gm PDF link annotation
    • https://cdn.sqhk.co/kekumumaxow/2ihUggP/bafamexesagowavukejaxaf.pdfIn PDF document text
    • http://ketorebagibof.22web.org/1877163672.pdfIn PDF document text
    • https://cdn.sqhk.co/xutazazo/k44lhd0/netflix_standard_price_rise.pdfIn PDF document text
    • https://cdn.sqhk.co/zejizoguzut/ihjhhNj/water_ball_jump_games.pdfIn PDF document text
    • https://xuvitekopa.weebly.com/uploads/1/3/2/7/132712193/nemokorasuvisip.pdfIn PDF document text
    • https://wiwusazefaxowo.weebly.com/uploads/1/3/4/4/134457051/xexesan.pdfIn PDF document text
    • https://pesimavadedeto.weebly.com/uploads/1/3/4/7/134729205/1911f3c8337.pdfIn PDF document text
    • http://mivetofim.22web.org/brooklyn_nine_nine_season_1_720p.pdfIn PDF document text
    • https://laverikiwife.weebly.com/uploads/1/3/4/5/134502667/4004344.pdfIn PDF document text
    • https://cdn.sqhk.co/gevajoke/Sgeq0jf/88936141823.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/moduxanakuri/mafudizusarazubuti.pdfIn PDF document text
    • https://s3.amazonaws.com/bufipevuril/5171234101.pdfIn PDF document text
    • https://s3.amazonaws.com/ronatiduzoxij/56615282884.pdfIn PDF document text
    • http://zudosikewemer.epizy.com/cruise_travel_packing_list_template.pdfIn PDF document text
    • http://banobozibijur.epizy.com/grimshaw_argument_structure.pdfIn PDF document text
    • https://s3.amazonaws.com/fidefofudi/about_gst_in_english.pdfIn PDF document text
    • https://s3.amazonaws.com/kavifunaruvi/political_platform_law_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/ultrasound_books_for_beginners.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_off0000d03e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD03E 5316 bytes
SHA-256: 04424b5eecb71ff07a9d876ebba66ae2f9f2a20c000c14e96a2fe180f0c9ed8e
font_01_sfnt_off0000e234.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE234 10688 bytes
SHA-256: 6cb9f60423c0cf695847eea6f58ce85820180f55a91dcc3626461d4f03b3bcc5

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