Malicious PDF — malware analysis report

Static analysis result for SHA-256 fccd9f949dbe4738…

MALICIOUS

PDF

47.7 KB Created: 2021-06-11 12:21:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: f0bbc0ce37457af4ba043f8cd92b6345 SHA-1: 062121dc3e0eae21c69c3c2b7796540a9c29d0ae SHA-256: fccd9f949dbe47380ce0f1f588dd033aab9b92fea0cf485ee48fe5da611d643e
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 0.9832

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 https://netcdn.tw/app/431946152/roblox-phantom-forces-cheats-2021-game-hack PDF link annotation
    • http://digilib.ulm.ac.id/pusat/repository/blox-supply-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/how-to-hack-aimbot-in-breaking-point-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/coin-master-heaven-daily-free-spins-and-coins-links_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/download-hacked-games-com-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/real-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-spins-and-coins-com_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/coin-master-cheat-codes-free_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/tiktok-free-tv-shows_GM835599320.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-roblox-accounts-with-builders-club_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/how-to-get-free-ranks-in-roblox-groups_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/pubg-uc-code-redeem_GM1330123889.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/how-to-hack-someones-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/how-to-get-more-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/coin-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/how-to-make-robux-on-roblox_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
stream_004_off0000530d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x530D 29532 bytes
SHA-256: d25856b6902bc4ad6940ed357f3458e3769e007f5f76ab55a0672123a450a41a
font_01_sfnt_off0000954e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x954E 19260 bytes
SHA-256: a9954eda9b6a5f8fbb57a39c6a3fdad99601efafebbe98c5d7ccf28feaad35d3

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