Malicious PDF — malware analysis report

Static analysis result for SHA-256 b80d12e0c105ef7e…

MALICIOUS

PDF

35.5 KB Created: 2021-07-04 20:19:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: ca7a0366ef7fa24582b8e931335a9ce3 SHA-1: 9f8387ba0345d5856484d903ae748c06c48c1e6e SHA-256: b80d12e0c105ef7e6097209c1b3ff9d0cab37d7b9fa881cef90ab056506b2580
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and a heuristic firing for a game hack redirect lure, indicating a phishing or scam attempt. The document body explicitly mentions 'free spins' and 'game hack', reinforcing the lure. While no scripts were extracted, the presence of numerous suspicious URLs suggests the document is designed to redirect users to malicious sites for potential malware downloads or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://netcdn.tw/app/406889139/free-spins-coin-master-october-13-2021-game-hack PDF link annotation
    • http://opac.kolejkrim.edu.my/repository/free-coin-master-gifts_GM406889139.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/money-hack-roblox-galaxy_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/coin-master-cards-free-cards_GM406889139.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/robux-hack-apk-pc_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/avatar-de-roblox_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/2-gunda-parte-del-hack-de-robux_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/free-roblox-builders-club-code-generator_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/free-roblox-girl-clothes_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/veste-free-in-game-roblox_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/roblox-drunk-walk-cheat-engine_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/roblox-money-hack-mad-city-2021-safe_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/free-wallpaper-for-roblox_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/free-online-generator-for-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/free-robux-get-now_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/roblox-hack-2021-free-robux-pc_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/free-robux-codes-not-used-2021_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/how-can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/the-plaza-roblox-money-cheat_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/free-robux-clothes_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000324d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x324D 23076 bytes
SHA-256: 6dd77965e25ed62ab308e89cfa669cc03cfb3e920e984c86b648e63e93d3c2aa
font_01_sfnt_off00006647.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6647 18908 bytes
SHA-256: 5f1d4495c97bce4e07ce5b2e9deba33a1b004efb7bf930514dbc796c23275dbc

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