Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d1fe6363c7413f5…

MALICIOUS

PDF

47.5 KB Created: 2021-06-11 12:38:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: dd68594ab95dd100c5839423bab347e6 SHA-1: dea1bc3e6d321fc879eed771f74cd85e35c28697 SHA-256: 4d1fe6363c7413f56c59ef564b6badd9d4ab0dc3eacc511743830a709d0e7524
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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 https://netcdn.tw/app/431946152/who-type-of-roblox-hack-is-the-best-game-hack PDF link annotation
    • http://library.forda-mof.org/katalog/repository/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/tiradas-coin-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/download-roblox-for-free-seash_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/do-coin-master-hacks-work_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/blood-flow-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-code-generator-2021_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-roblox-commercial_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-cheat-client-juillet-2021_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-free-spins-link-no-verification-code_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/2021-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-get-free-robux-no-verification-or-offers_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/what-is-robux_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-download-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-free-spin-realme-products_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/base-wars-health-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-hack-dragon-ball-rage_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/programa-para-ser-hacker-en-roblox_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
stream_004_off000051c8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51C8 29240 bytes
SHA-256: dd8b5007ca0fda43514cfab5b256e3e1b80e3d8be6c3ee79c0acd85c466bdff5
font_01_sfnt_off000094ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94EC 19004 bytes
SHA-256: 4316b404ddc1894643752d68e08072da551e3f1a63aa9e8ce62340912ec63258

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