Malicious PDF — malware analysis report

Static analysis result for SHA-256 12fdae5b2ab55884…

MALICIOUS

PDF

48.2 KB Created: 2021-05-15 09:08:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 9836368af3c4c31a26dd74f92e3575e9 SHA-1: 9d7b173fe02cf85156f8b5d13fc00e995c8b0e34 SHA-256: 12fdae5b2ab55884cbd3a7093ea3bdfbd25045cc89ea25107557d0d1a2430a60
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for game hacks and redirects to a known malicious URL, https://netcdn.xyz/app/406889139/download-coin-master-apk-hack-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a malicious intent to redirect users to potentially harmful content. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

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 https://netcdn.xyz/app/406889139/download-coin-master-apk-hack-game-hack In PDF document text
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/roblox-free-printables_GM431946152.pdfIn PDF document text
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/wahoogaming-co-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/coin-master-mod_GM406889139.pdfIn PDF document text
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/coin-master-free-pet-food_GM406889139.pdfIn PDF document text
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/free-coin-master-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/coinmaster-spins_GM406889139.pdfIn PDF document text
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/free-robux-only-1-step_GM431946152.pdfIn PDF document text
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/robloxheroxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/download-hack-coin-master-apk_GM406889139.pdfIn PDF document text
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/minecraft-free-no-download_GM479516143.pdfIn PDF document text
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/coin-master-hack-xyz-download-free_GM406889139.pdfIn PDF document text
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/free-robux-no-verify_GM431946152.pdfIn PDF document text
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/how-to-get-free-items-on-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004988.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4988 25872 bytes
SHA-256: 476a0899da3f1491046c3d7e8570b1de351445888a85465d716387678c2df15c
font_01_sfnt_off000084fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84FC 8676 bytes
SHA-256: e06aca5f85e50ae6cefda302c5299c18ab6d27c174f74f0bb0ee8efa7ccb4468
font_02_sfnt_off00009986.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9986 18472 bytes
SHA-256: 889c97ae1e8c5f6287d7e9e9a77de81d4c7f2c24e7ca8efa3945bbdf42481e01

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