Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3cdfefeb49d995b…

MALICIOUS

PDF

33.6 KB Created: 2021-07-06 03:09:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 605b694fa9996fd77dbd6193f5ca0120 SHA-1: 2336e3f49496c648da9dd21647f654ca5b02bcf6 SHA-256: d3cdfefeb49d995b181aa3c3eb729a3f8a122743a1d95cd5b2052dc4e556654d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and other PDFs, masquerading as game hacks and cheats. The primary lure appears to be related to Minecraft and Roblox. The document body and heuristic firings indicate a redirection workflow designed to lead users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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.tw/app/479516143/minecraft-bedrock-edition-hacks-game-hack In PDF document text
    • http://perpus.i2s-learning.com//repository/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/coin-master-hack-mod-apk-2021-download_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-attack-on-titan-cheats_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/robux-hack-2021-real-no-human-vertification_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-robux-gift-card_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/coin-master-app-hacks_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/best-way-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-jailbreak-speed-hack-2021_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/como-tener-hacks-en-roblox-prision-royale_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/how-to-get-stuff-that-cost-coins-free-mpe-master_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/rone-space-robux-hack_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-sexually_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-get-free-robux-hack-by-stealing-information_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-robux-meme_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-draw-classic-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-robux-help-com_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-robux-no-verification-or-survey-2021_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_off00003003.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3003 21928 bytes
SHA-256: 01a071d1882bce9a3244c2bb8522f55679c49e588937d1deb7caf26a480252c1
font_01_sfnt_off00005fdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FDF 18560 bytes
SHA-256: c6086f00a80ac9dd1c4663510e3c0a85256bf03437e56001caa3ddad15db1f6f