Malicious PDF — malware analysis report

Static analysis result for SHA-256 b29d7cb951454dcc…

MALICIOUS

PDF

34.6 KB Created: 2021-07-05 09:16:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 21d411aeef35342fb9da3e6279e30add SHA-1: 839c0982d9d39904f1bed7e692589f481889b4c8 SHA-256: b29d7cb951454dcc58ac112fd198b4bbb90c5bd0d10bda4ad3a9cb07a92477fb
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.tw/app/479516143/free-minecraft-bedrock-game-hack PDF link annotation
    • http://library.persadabunda.ac.id/repository/free-roblox-items-catalog_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/roblox-cheat-codes_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/free-minecraft-maps_GM479516143.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/bananaman2021-free-robux_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/roblox-como-tener-robux-gratis-2021-el-hacker-gato-loco_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/free-tiktok-followers-no-human-verification_GM835599320.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/cool-kid-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/coin-master-hack-using-cheat-engine_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/wurst-mc_GM479516143.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/get-more-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/roblox-bloxburg-hack_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/coin-master--hack_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/is-coin-master-free_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/free-robux-group_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/hack-roblox-jailbreak-2021-money_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/tiktok-free-or-paid_GM835599320.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/roblox-script-hack_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/free-robux-website_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/join-this-roblox-group-for-free-robux-roblox-groups_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_off000030c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30C6 22792 bytes
SHA-256: edc0c613b48fd0edb0ca58b241f844b1643f8db58ec924368363925c061f3430
font_01_sfnt_off000063d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63D8 18560 bytes
SHA-256: 8a1cf310a32837577002de6ae703504663fc8f6c74f3557264522e251e416ebe

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