Malicious PDF — malware analysis report

Static analysis result for SHA-256 a506eebdf59842de…

MALICIOUS

PDF

34.5 KB Created: 2021-06-27 21:40:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 2037e498143484863fb7c2ea7a956a18 SHA-1: 9f457e5cd0b1daf436d696e95698259f50629466 SHA-256: a506eebdf59842de7ad7bef48e33dbf6a9a5dfc3ea336e8266a9ffea2b41b13c
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/roblox-scripting-free-help-game-hack PDF link annotation
    • https://razredna-nastava.net/files/hack-robux_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/hacks-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • https://razredna-nastava.net/files/roblox-hair-for-free_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/money-for-roblox-strucid-free_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/roblox-cheats-deutsch-2021_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/free-minecraft-alt-generator_GM479516143.pdfIn PDF document text
    • http://razredna-nastava.net/files/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/free-roblox-close_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/roblox-free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/coin-master-free-spins-and-coins-daily-links_GM406889139.pdfIn PDF document text
    • https://razredna-nastava.net/files/coin-master-freebies_GM406889139.pdfIn PDF document text
    • http://razredna-nastava.net/files/how-to-get-free-robux-by-joining-a-group_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • http://razredna-nastava.net/files/free-money-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://razredna-nastava.net/files/how-to-hack-ban-roblox_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/minecraft-tower-defense-2-hacked_GM479516143.pdfIn PDF document text
    • http://razredna-nastava.net/files/minecraft-mod-menu_GM479516143.pdfIn PDF document text
    • https://razredna-nastava.net/files/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/links-to-get-free-spins-on-coin-master_GM406889139.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_off00003126.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3126 21944 bytes
SHA-256: 6bbddde3d415b1537b8318e22f70f460b9ffe0a88e377a155cc8f5bdfcb557f4
font_01_sfnt_off000061d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61D0 19048 bytes
SHA-256: 3b68348bdebe0e8c0f327ce7ebe0dd54b3915ff7ae75d416851040d5803ded32

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