Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf205b72656db1da…

MALICIOUS

PDF

34.7 KB Created: 2021-07-05 23:32:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: be8afd761917cd4c70d25ab19f6f1b3a SHA-1: d39db5ff27d3bd27af402578814d394d0841ed9a SHA-256: bf205b72656db1dad1096f4c6c881ebe8c7019cfed3a539754532b8baa0efb33
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains lures for game hacks and generators, directing users to malicious URLs. The ML classifier strongly indicates maliciousness, and the PDF structure suggests exploitation for client execution. The embedded URLs are the primary indicators of compromise, likely leading to further malware downloads or phishing pages.

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-thumbnails-game-hack PDF link annotation
    • http://digilib.iailm.ac.id//repository/synapse-roblox-free_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/get-free-roblox-robux-on-therobuxapp-com_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/how-to-gain-more-spins-on-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/ghost-hack-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-get-free-clothes-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/robux-hack-no-human-application_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/i-want-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/774-hack-roblox-jailbreak-download_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/minecraft-hack-app_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-hack-free-2021-blogspot_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-hack-spin-generator_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-hack-any-account-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-bird-in-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-studio-play-for-free_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/can-roblox-detect-cheat-engine_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/hack-coin-master-game_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-spins-and-coins-for-coin-master-game_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_off00003224.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3224 22668 bytes
SHA-256: cd82b85157a9873977f6ee82fbad66966b7d3b356c167c5c03187994aceef88c
font_01_sfnt_off0000642b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x642B 18652 bytes
SHA-256: 8cb94b06f77e1baa2d49adc168d2190632a611d700f1536995b593d613ae9b0b

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