Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d18e83f0a12b637…

MALICIOUS

PDF

34.7 KB Created: 2021-07-01 06:15:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 4c17a0dd49e9bce20c085b3ad6410378 SHA-1: 0a391db9e9555951d9e0c1e12d08b05b0f66facc SHA-256: 0d18e83f0a12b637c9c832e55d8434106b6c109bab99ef00a016ef04cde268a7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to known malicious infrastructure, specifically promoting game hacks and generators. The document body and heuristics indicate a lure for free game items, which is a common tactic for phishing or malware distribution. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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.co/app/431946152/insane-jailbreak-roblox-admin-panel-hack-working-game-hack In PDF document text
    • https://www.tdbaska.hr/files/free-coin-master-game_GM406889139.pdfIn PDF document text
    • http://www.tdbaska.hr/files/coin-master-hack-2021-iphone_GM406889139.pdfIn PDF document text
    • http://www.tdbaska.hr/files/hack-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.tdbaska.hr/files/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • http://www.tdbaska.hr/files/coin-master-free-spins-and-coins-hack_GM406889139.pdfIn PDF document text
    • https://www.tdbaska.hr/files/coin-master-card-hack-apk_GM406889139.pdfIn PDF document text
    • https://www.tdbaska.hr/files/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://www.tdbaska.hr/files/roblox-players-passwords-to-hack-them_GM431946152.pdfIn PDF document text
    • http://www.tdbaska.hr/files/minecraft-mod-updater_GM479516143.pdfIn PDF document text
    • http://www.tdbaska.hr/files/wahoo-gaming-co-free-robux_GM431946152.pdfIn PDF document text
    • http://www.tdbaska.hr/files/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • https://www.tdbaska.hr/files/free-robux-today_GM431946152.pdfIn PDF document text
    • http://www.tdbaska.hr/files/free-robux-generator-lebansay_GM431946152.pdfIn PDF document text
    • http://www.tdbaska.hr/files/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • https://www.tdbaska.hr/files/coin-master-free-spin-and-coin-link-haktuts-hacking-news_GM406889139.pdfIn PDF document text
    • http://www.tdbaska.hr/files/free-roblox-hair-codes_GM431946152.pdfIn PDF document text
    • https://www.tdbaska.hr/files/coin-master-free-pin_GM406889139.pdfIn PDF document text
    • https://www.tdbaska.hr/files/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • https://www.tdbaska.hr/files/coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • https://www.tdbaska.hr/files/roblox-phantom-forces-hack_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002ef3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EF3 22352 bytes
SHA-256: b814396040e1d7c6f6e738a9b31575792a0f8cd2926a6edf69a20fbafe220106
font_01_sfnt_off00006091.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6091 19728 bytes
SHA-256: 10d4ba3b659741a13772865e4aebeb6e864ffbe9cdd927b0474513e3bde360e7

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