Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a131217d7d0e4c8…

MALICIOUS

PDF

34.2 KB Created: 2021-07-09 02:26:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 0eb8646e22b9af0243bbac92c844bffc SHA-1: 96f9f99e6828089f3bb50c47a66c8d8d183f89eb SHA-256: 3a131217d7d0e4c88886f7331a3fd4061a4a9de9063ce9c8c50532db06b603fa
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/431946152/how-do-i-get-free-robux-for-roblox-game-hack PDF link annotation
    • https://digilib.stimlog.ac.id/repository/roblox-speed-and-jump-hack_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-robux-websites-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-font-free_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/easy-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/install-free-game-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/go-through-walls-roblox-hack_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/coin-master-cheats-free-spins_GM406889139.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-free-black-pants_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-spins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-robux-place_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/robux-fun-hack_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/cheat-item-book-in-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/cool-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/tons-of-robux-for-free_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/roblox-booga-booga-hack_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-hack-in-roblox-to-rank-up-a-group_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/how-to-get-free-admin-in-your-own-roblox-place_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/real-free-robux-codes_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_off00002f02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F02 22120 bytes
SHA-256: 7320ad3116419f8abcb0cfca278153e161ee44c4999adea7fc78761043eb1a28
font_01_sfnt_off00005fd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FD1 19228 bytes
SHA-256: 65aeb187f793184c09dd9751a53cb4483d606e384a0e7928dbbf5d7852992517

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