Malicious PDF — malware analysis report

Static analysis result for SHA-256 89f9f88c107e5019…

MALICIOUS

PDF

76.2 KB Created: 2020-12-29 20:02:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cb1fad5235b076ea0cdd221e850071ae SHA-1: bdfd2b1970745f57e31f15ae5b85069342277371 SHA-256: 89f9f88c107e5019faf147d7bbfba1799d6099a0b0b64f6013bc6dffcbbba30e
96 Risk Score

Malware Insights

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

The PDF file contains a heuristic indicating an external URI, specifically a URL related to 'black friday deals'. This URL is likely part of a phishing or scam attempt to trick users into visiting a malicious site. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://trafficel.ru/strik?utm_term=black+friday+deals+2018+shopping+ads+apple
    • https://cdn.sqhk.co/nopawuwam/Beheqhh/english_pop_songs_in_french.pdf
    • https://cdn.sqhk.co/faxenukev/Hainpie/lezezunutukonubinatim.pdf
    • https://cdn.sqhk.co/zijikunu/jigjaBA/idle_human_game_for_pc.pdf
    • https://cdn-cms.f-static.net/uploads/4413370/normal_5fd3dc0b03935.pdf
    • https://cdn.sqhk.co/vuxevabuvix/gfJoUtl/venmo_card_atm_locations.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/wejuvono/pdf_converter_professional_guide.pdf
    • https://s3.amazonaws.com/tevomenil/53783414146.pdf
    • https://s3.amazonaws.com/nitajosasa/boxhead_3_more_rooms.pdf
    • https://uploads.strikinglycdn.com/files/0ae98341-5607-4e01-a0cf-cff2ccf046be/nenosolutuki.pdf
    • https://s3.amazonaws.com/legesiliv/ecsa_guidelines_2019.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea89.bin
fcaac7e637796022abc31984540f3c7d0132faad2e51c317eb5be64c17ce439e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEA89 6152 bytes
font_01_sfnt_off0000ff8b.bin
c35e350f7b75b923efa7b631f2400cbb2ca77d9df1a3c05f9bdaae4dbe47e063		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF8B 10872 bytes

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