Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2df56034cf90b00…

MALICIOUS

PDF

34.3 KB Created: 2021-07-02 04:17:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 6bd273edb1e97c14e0423ea29297c187 SHA-1: fa64afb88194a9248fc193e34bf6f9b5deca3bee SHA-256: f2df56034cf90b00f799eaef1ed13caaeba2461197fcedabb405b91df817068b
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains numerous links designed to appear as 'free game hacks' or generators, a common lure for phishing or malware distribution. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of such links, suggesting a link farm intended to attract users through search engines. While no scripts were extracted, the embedded URLs and the nature of the lures strongly suggest the document's purpose is to redirect users to potentially malicious sites that may host further exploits or malware, aligning with T1203 and T1059.007.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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 http://netcdn.co/app/479516143/how-to-download-minecraft-for-free-on-android-game-hack PDF link annotation
    • https://man2kediri.net/__statics/gudangsoal/files/is-roblox-free-on-pc_GM431946152.pdfIn PDF document text
    • https://man2kediri.net/__statics/gudangsoal/files/avatar-the-last-airbender-roblox_GM431946152.pdfIn PDF document text
    • https://man2kediri.net/__statics/gudangsoal/files/coin-master-free-link-2021_GM406889139.pdfIn PDF document text
    • https://man2kediri.net/__statics/gudangsoal/files/free-russia-sign-roblox-pls-freeeeee_GM431946152.pdfIn PDF document text
    • https://man2kediri.net/__statics/gudangsoal/files/can-you-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://man2kediri.net/__statics/gudangsoal/files/free-robux-groupe_GM431946152.pdfIn PDF document text
    • https://man2kediri.net/__statics/gudangsoal/files/how-to-get-a-free-minecraft-server_GM479516143.pdfIn PDF document text
    • https://man2kediri.net/__statics/gudangsoal/files/coin-master-free-spin-and-coin-link-today_GM406889139.pdfIn PDF document text
    • https://man2kediri.net/__statics/gudangsoal/files/dungeon-quest-roblox-farming-hack_GM431946152.pdfIn PDF document text
    • https://man2kediri.net/__statics/gudangsoal/files/roblox-blob-simolator-2-hack_GM431946152.pdfIn PDF document text
    • https://man2kediri.net/__statics/gudangsoal/files/how-to-get-the-roblox-madness-face-for-free_GM431946152.pdfIn PDF document text
    • https://man2kediri.net/__statics/gudangsoal/files/cheat-roblox-restaurant-tycoon_GM431946152.pdfIn PDF document text
    • https://man2kediri.net/__statics/gudangsoal/files/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://man2kediri.net/__statics/gudangsoal/files/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • https://man2kediri.net/__statics/gudangsoal/files/how-to-get-minecraft-dungeons-for-free_GM479516143.pdfIn PDF document text
    • https://man2kediri.net/__statics/gudangsoal/files/coin-master-free-pet-food_GM406889139.pdfIn PDF document text
    • https://man2kediri.net/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-ps4_GM479516143.pdfIn PDF document text
    • https://man2kediri.net/__statics/gudangsoal/files/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • https://man2kediri.net/__statics/gudangsoal/files/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • https://man2kediri.net/__statics/gudangsoal/files/roblox-shirt-template-free_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_off000030b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30B8 22372 bytes
SHA-256: 7c918c13c15003b79a0febe0cc790e2d460d5595fc6353b267459a5b0cb59c96
font_01_sfnt_off0000628e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x628E 18576 bytes
SHA-256: 533f93ab9dd02e28dde29d6843f0244f722ecb9b3db78d8904ab6a8c57640b5d

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