Malicious PDF — malware analysis report

Static analysis result for SHA-256 2560b6ec0036e825…

MALICIOUS

PDF

69.7 KB Created: 2021-02-28 18:15:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c38a0f9d83713d6b4e815e9c82d26cf8 SHA-1: 148bda42e59848a43b91b357a985d4c606931fc7 SHA-256: 2560b6ec0036e82505126a2bd45a7c8a4bfd5977c97c092dcdbc21e86d560ffe
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is a strong indicator of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further support the malicious nature of the file. The document body, though heavily obfuscated, appears to be a lure related to a popular movie, designed to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://pelibifir.ru/123?utm_term=is+london+has+fallen+on+netflix+uk
    • http://lngcliente.com/78133537816xd6ej.pdf
    • http://6gusevshop.website/wazefe0riuk.pdf
    • http://banisizugevota.22web.org/87907648144.pdf
    • http://pokupka.space/vuduzigobeweliliz8rhv.pdf
    • http://kebotup.66ghz.com/neonatal_jaundice_approach.pdf
    • https://cdn.sqhk.co/rokajoten/Hget5Cz/rocky_mountain_high_music_and_lyrics.pdf
    • http://avit0.cc/bully_anniversary_edition_apk_game_free98wb4.pdf
    • https://cdn.sqhk.co/jemitaso/VAvgdlP/cruise_fruit_art.pdf
    • https://cdn.sqhk.co/dajebala/WJpTtUc/twisted_wonderland_characters_full_body.pdf
    • https://cdn.sqhk.co/rozopebak/4p5uhat/slice_of_heaven_cake_flavors.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/lemefofutomapox/73012203917.pdf
    • https://s3.amazonaws.com/tisegovofu/70317733451.pdf
    • http://zuwapiw.rf.gd/bulleya_sultan_movie_video_song.pdf
    • https://s3.amazonaws.com/fogibi/cities_skylines_traffic_guide.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_off0000d340.bin
31b4885f09ee27c2c4e6eb6022980585ad3d0ad0547794ee7d368869f0748e13		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD340 4968 bytes
font_01_sfnt_off0000e427.bin
a1c4a3e1bc36ab243e544e3a19641cde5fcc9fab6b8ac228bbbf42391386561c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE427 10928 bytes

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