Malicious PDF — malware analysis report

Static analysis result for SHA-256 c74a6414793d77ac…

MALICIOUS

PDF

78.7 KB Created: 2021-03-08 19:44:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3d21d5384b545759a3beed8c26101da4 SHA-1: d521d69177ed2c04aa052c9b5a38152b61cdb678 SHA-256: c74a6414793d77aca6d5784251bafd696fd8facf5a2c101bac50c0e688638fe2
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI that redirects to a URL disguised as a 'pro kabaddi score sheet pdf'. This URL likely leads to the download of a malicious payload, as indicated by the ML classifier and ClamAV detection. The document body is heavily obfuscated, preventing a detailed analysis of its specific content, but the presence of external links and high detection scores strongly suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://seumenha.ru/award?keyword=pro+kabaddi+score+sheet+pdf
    • http://zavolofa.mygamesonline.org/mewejaxivewiwisesugovital.pdf
    • https://cdn.sqhk.co/mugegiduveb/WZRjgJ6/wutewajefezagulamunu.pdf
    • https://xejapekedom.weebly.com/uploads/1/3/4/8/134864907/bajopovogebexetujaxe.pdf
    • https://dolumipekino.weebly.com/uploads/1/3/4/6/134625527/317811.pdf
    • https://cdn.sqhk.co/tamoravuwera/jbjchcx/bee_backpack_toddler.pdf
    • https://static.s123-cdn-static.com/uploads/4479470/normal_5fc744f562b2d.pdf
    • https://static.s123-cdn-static.com/uploads/4418381/normal_5ffb22e113f06.pdf
    • https://cdn.sqhk.co/jevamivuvugi/iahi3sD/basketball_trick_shots_ideas.pdf
    • http://rixorevu.getenjoyment.net/67856724719.pdf
    • https://jeduwenerapowi.weebly.com/uploads/1/3/4/6/134678879/8918567.pdf
    • https://cdn.sqhk.co/vasibejovej/fqhXo1R/96999516861.pdf
    • https://bojubuloxobepi.weebly.com/uploads/1/3/0/9/130969884/49303f3db8af8.pdf
    • http://tonevagewalilu.medianewsonline.com/29140501908.pdf
    • http://wivuperafuzo.mypressonline.com/modejomotobirojosujaxakaj.pdf
    • https://cdn.sqhk.co/wikelere/idiXjh2/tabezorer.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://sivikonalijuto.myartsonline.com/air_fryer_recipe_book_with_pictures.pdf
    • http://beliraguw.onlinewebshop.net/pitozunerarisijivazif.pdf
    • https://s3.amazonaws.com/sedowedi/a_christmas_carol_short_story_version.pdf
    • http://zogosugo.onlinewebshop.net/zibigeb.pdf
    • https://s3.amazonaws.com/defipedibe/53824545621.pdf
    • https://s3.amazonaws.com/rebomedug/best_stock_to_buy_under_10_cents.pdf
    • https://s3.amazonaws.com/livivuvuwugeb/machine_screw_head_types.pdf
    • https://s3.amazonaws.com/zikeko/african_queen_lyrics_mp4.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_off0000eb7f.bin
3df9d43393d217b83a72caa39efd12e7a3fd665f7433c7edd06283b374aafc8c
pdf-font-stream PDF embedded font (sfnt) at offset 0xEB7F 5416 bytes
font_01_sfnt_off0000fdde.bin
3fdc21c07c669a8863c9a1b63e732f844cc4b97dd047aaf491146fef19393e65
pdf-font-stream PDF embedded font (sfnt) at offset 0xFDDE 15272 bytes