Malicious PDF — malware analysis report

Static analysis result for SHA-256 7696988d3bfd89d1…

MALICIOUS

PDF

35.1 KB Created: 2021-06-17 23:27:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 0682f3ec9b2f53e0c672061c268ee494 SHA-1: 3018774dfebb1a20e7646cf7bcdaf8bb5bcb1784 SHA-256: 7696988d3bfd89d12bcdc440d8be89f01b74137b4b9374ee5b4e3a501e86aeff
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 0.9980

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 http://netcdn.co/app/431946152/free-robux-no-verification-no-email-game-hack PDF link annotation
    • http://elearning.mimcabangpurbalingga.com/__statics/gudangsoal/files/roblox-hack-game_GM431946152.pdfIn PDF document text
    • http://elearning.mimcabangpurbalingga.com/__statics/gudangsoal/files/make-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mimcabangpurbalingga.com/__statics/gudangsoal/files/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mimcabangpurbalingga.com/__statics/gudangsoal/files/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.mimcabangpurbalingga.com/__statics/gudangsoal/files/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mimcabangpurbalingga.com/__statics/gudangsoal/files/cheats-on-roblox-game_GM431946152.pdfIn PDF document text
    • http://elearning.mimcabangpurbalingga.com/__statics/gudangsoal/files/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mimcabangpurbalingga.com/__statics/gudangsoal/files/hack-piano-roblox-got-talent_GM431946152.pdfIn PDF document text
    • http://elearning.mimcabangpurbalingga.com/__statics/gudangsoal/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mimcabangpurbalingga.com/__statics/gudangsoal/files/cool-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://elearning.mimcabangpurbalingga.com/__statics/gudangsoal/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mimcabangpurbalingga.com/__statics/gudangsoal/files/free-2021-roblox-account_GM431946152.pdfIn PDF document text
    • http://elearning.mimcabangpurbalingga.com/__statics/gudangsoal/files/roblox-tix-hack_GM431946152.pdfIn PDF document text
    • http://elearning.mimcabangpurbalingga.com/__statics/gudangsoal/files/free-hair-roblox-boy_GM431946152.pdfIn PDF document text
    • http://elearning.mimcabangpurbalingga.com/__statics/gudangsoal/files/give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mimcabangpurbalingga.com/__statics/gudangsoal/files/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://elearning.mimcabangpurbalingga.com/__statics/gudangsoal/files/free-robux-rewards_GM431946152.pdfIn PDF document text
    • http://elearning.mimcabangpurbalingga.com/__statics/gudangsoal/files/roblox-free-domino-crown_GM431946152.pdfIn PDF document text
    • http://elearning.mimcabangpurbalingga.com/__statics/gudangsoal/files/alone-how-to-get-for-free-roblox-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mimcabangpurbalingga.com/__statics/gudangsoal/files/minecraft-login-free_GM479516143.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_off0000333a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x333A 21812 bytes
SHA-256: b6112a22a2e070ab13edf0974a3dccb93e67491a6629c818188e28e86ff01b24
font_01_sfnt_off000063a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63A7 19224 bytes
SHA-256: b4680209103c85e33feb6650ac34ee2f11aa6efbde287bfd3a7526182825fde2

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