Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a40236717d0a491…

MALICIOUS

PDF

42.7 KB Created: 2021-04-08 11:41:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 25bdd1b5e352321d3fd2946608509155 SHA-1: 95de834373220266c31d54640d4682957d31b24a SHA-256: 3a40236717d0a491fa5db18b9b4527e7020e34ffbd11489290361776ff075701
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 0.9988

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://gaminggenerator.org/app/431946152/how-to-get-free-robux-earnrobux-today-game-hack PDF link annotation
    • http://dqdq.pl/images/free-dominius-roblox.pdfIn PDF document text
    • http://efeikaiwa.net/images/roblox-free-items-november-2021.pdfIn PDF document text
    • http://ff-obertraun.at/images/roblox-granny-speed-hack.pdfIn PDF document text
    • http://www.studiodamato.it/images/free-roblox-card-giveaway.pdfIn PDF document text
    • http://www.torvet11.dk/images/free-twitter-codes-for-assasian-roblox.pdfIn PDF document text
    • http://pietroubaldi.org.br/images/how-to-get-free-robux-legallz.pdfIn PDF document text
    • http://businessfit.com/images/how-to-hack-someones-account-on-roblox-2021-jax.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/free-robux-trade-free-robux.pdfIn PDF document text
    • https://www.u-pin-it.com/images/roblox-free-play-unblocked.pdfIn PDF document text
    • https://zabota-kashira.ru/images/roblox-guest-quest-hack.pdfIn PDF document text
    • http://fsgtoday.com/images/free-admin-group-roblox.pdfIn PDF document text
    • https://academy.cr/images/farewell-hack-roblox-one-piece-open-seas.pdfIn PDF document text
    • http://jugendfeuerwehr-scheinfeld.de/images/roblox-music-hack.pdfIn PDF document text
    • http://www.elis-strechy.cz/images/roblox-anime-cross-hack.pdfIn PDF document text
    • http://livebybuddhism.org/images/how-to-get-free-robux-immediately.pdfIn PDF document text
    • http://bpbfloydinc.org/images/delete-free-roblox-account.pdfIn PDF document text
    • http://wireprod.net/images/how-to-noclip-with-cheat-engine-in-roblox.pdfIn PDF document text
    • http://eleveurs-autrement.fr/images/roblox-hack-links.pdfIn PDF document text
    • http://neumann.fr/images/hack-cruise-ship-tycoon-roblox.pdfIn PDF document text
    • https://www.roltechnik.hu/images/roblox-booga-booga-instant-kill-hack.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/free-robux-trade-free-In 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_002_off0000489c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x489C 26832 bytes
SHA-256: 85971c2b7972b0b8fdb77b02fbcb13fa8d8182196b19851cb36b712cda564f68
font_01_sfnt_off0000850c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x850C 18260 bytes
SHA-256: 422eeda701dc4347c3b6154bec2cf0f0d75950fe9637949990a07a3ffd8a7025