Malicious PDF — malware analysis report

Static analysis result for SHA-256 9969c9875c3eb29f…

MALICIOUS

PDF

34.3 KB Created: 2021-07-04 21:52:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: f81357b792286fee55c73ab2e582fda6 SHA-1: 2a20d4d8131ce2ff2f3eef9c99f54e8448b1d409 SHA-256: 9969c9875c3eb29f6461cfc91a49647b18b38c7e25dddfc8907045c0c74497e1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for free game currency or hacks, directing users to a malicious redirector URL. The embedded URL and the document body both point to this deceptive tactic. The ML classifier also flagged this PDF as malicious, indicating a high probability of malicious intent.

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.tw/app/431946152/how-to-get-more-robux-for-free-game-hack In PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-hack-coin-master-with-game-guardian_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-free-clothes-codes_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-spins-coin-master-2021-app_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-cloting-roblox_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-necklace-free-shipping_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/bux-free-robux_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/daily-free-coin-and-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/hackear-coin-master-sin-verificacion_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-ctrl-tp-hack_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/como-hackear-coin-master-2021-espaol_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/minecraft-hack-download_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/minecraft-free-download-laptop_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-lucky-block-battlegrounds-hack_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-firebird-card-free_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-get-2021-robux-for-free_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-coin-master-spins-no-verification_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-com-r_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/moonactive-free-spins-coin-master_GM406889139.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_off0000306f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x306F 21836 bytes
SHA-256: 28e224c7089b3bee2ce99447d8be9705e55aba48cd5fb438feeee452a6f6aacd
font_01_sfnt_off0000608c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x608C 19180 bytes
SHA-256: 2bff2d2121057f006b71b066e94fd010776662c2bbd91426c2b13817cbe3f110

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