Malicious PDF — malware analysis report

Static analysis result for SHA-256 60751c70ddf57f4c…

MALICIOUS

PDF

45.5 KB Created: 2021-05-12 19:07:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 9fde37852ef3abe5708b54e1d6fa850d SHA-1: d23d1b42cc20567c35c2f8dccd19e32b5effe307 SHA-256: 60751c70ddf57f4c0f7c33650c69bbd4a70ec7276af120f583509d417df4f903
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier. It uses a remote-support lure. 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 0.9507

Heuristics 5

  • 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.
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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.xyz/app/479516143/how-to-get-minecraft-for-free-2021-game-hack PDF link annotation
    • http://lib.icbc-indonesia.org//repository/coin-master-game-hunter_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/roblox-april-fools-hack_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/minecraft-building-hacks_GM479516143.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/mangocheats-com-hack-coin-master-cheat_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/coin-master-34-4-hack-download_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/collect-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/play-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/minecraft-hacks-ps4_GM479516143.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/coin-master-hack-tool-pc_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/robux-fun-hack_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/free-minecraft-java-server_GM479516143.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/how-to-create-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/how-to-get-free-robux-on-chromebook_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/roblox-apk-hack_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/fbchampion-com_GM406889139.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_off00004e59.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E59 24576 bytes
SHA-256: d9d13d5cb1cad3fa353cea2b067440123bb127c676d7c778b3c6165f776a128e
font_01_sfnt_off000085d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85D8 2820 bytes
SHA-256: 972979c3a46100cf5f8fd289bc6fbd2496ff75fec0e3f6753648c72ec6eba714
font_02_sfnt_off00008f78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F78 18276 bytes
SHA-256: f72584a9d01c2da042f33208491f9b72ec8022d2d16609869bbd7195f9399835

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