Malicious PDF — malware analysis report

Static analysis result for SHA-256 67759c4b2ceef981…

MALICIOUS

PDF

33.2 KB Created: 2021-07-21 07:33:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 5dca93f9923e4838b345abf6ce843664 SHA-1: 88ecb387e1bab4ed31e9f1b703a3a75ea655ce65 SHA-256: 67759c4b2ceef9818221b8f7c5a4be028a0aad7d5002b19cdeb6072090873aef
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generators' or 'game hacks' for popular games. The primary malicious URL identified is http://netcdn.tw/app/479516143/minecraft-ps4-free-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to trick users into downloading further malicious content or visiting phishing sites, aligning with a spearphishing attachment tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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.tw/app/479516143/minecraft-ps4-free-game-hack In PDF document text
    • http://lib.mappifhui.org/repository/free-spin-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/classic-minecraft-net-hacks_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-website_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-download-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-spins-for-coin-master_GM406889139.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
stream_002_off00002e6a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2E6A 22824 bytes
SHA-256: 561a9529f330de8e37fc1fef77033bb44c12d9ded6d1d00e44dfcb9098385557
font_01_sfnt_off00006179.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6179 17784 bytes
SHA-256: eb08404513e1de89cb797b3c4bca4c8ebf2d802e230ebef8911427dd20e63131

Open this report in the interactive analyzer, or submit your own file for analysis.