Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f3f03a452a14689…

MALICIOUS

PDF

41.6 KB Created: 2021-04-07 17:42:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 38760a56b2e9dcf578cdbd8ef1320917 SHA-1: f195cd0867bb8a634ccb6dcb8a97a62e576506d0 SHA-256: 8f3f03a452a14689ceac088a1daeec15fbf20f0e3818851f903e47b3ede994f5
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/https-roblox-hack-game-hack PDF link annotation
    • https://almaville.org.kz/images/2gunda-parte-del-hack-de-robux.pdfIn PDF document text
    • http://goldwing-shop.ru/images/roblox-rocitizens-cheat-engine-2021.pdfIn PDF document text
    • http://vagency.us/images/how-to-get-free-robux-legit-no-survey.pdfIn PDF document text
    • http://www.duchidicastelluccio.it/images/roblox-hack-tycoon-simulator.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/roblox-pokemon-brick-bronze-free.pdfIn PDF document text
    • http://safetin.ru/images/hack-1k-robux.pdfIn PDF document text
    • http://fabianslaw.org/images/free-robux-generator-no-verification.pdfIn PDF document text
    • http://www.mosaikshop.at/images/reddit-hack-roblox.pdfIn PDF document text
    • http://colegioluisamigo.cl/images/roblox-build-a-boat-for-treasure-hack-2021-list.pdfIn PDF document text
    • https://www.ukrtrans.biz/images/get-easy-free-robux.pdfIn PDF document text
    • http://www.lionel-seppoloni.fr/images/best-free-roblox-faces.pdfIn PDF document text
    • http://africadaily.co.za/images/free-robux-by-just-generating-survey.pdfIn PDF document text
    • http://www.lacarla.dk/images/how-to-put-in-cheat-codes-roblox.pdfIn PDF document text
    • http://huananhai.net/images/download-all-free-roblox-games.pdfIn PDF document text
    • http://internetdeputy.com/images/hack-roblox-with-this-edit-cookie.pdfIn PDF document text
    • http://schmittmusik.de/images/free-dna-hack-generator-roblox.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/sword-fighting-hack-roblox.pdfIn PDF document text
    • https://eurekaaccounting.co.za/images/why-cheat-engine-doesnt-work-in-roblox.pdfIn PDF document text
    • http://kcr-rochlitz.de/images/nike-shirt-roblox-free.pdfIn PDF document text
    • http://reisebild.eu/images/uirbx-club-free-robux.pdfIn PDF document text
    • https://robux-rank.comIn PDF document text
    • https://eurekaaccounting.co.za/images/why-cheat-engine-doesnt-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_off000048e2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48E2 24868 bytes
SHA-256: 5db40fdfa4fcaa2b138e5d753daa574deb8207b9aeabdb45eb664180ca45bb19
font_01_sfnt_off000081db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81DB 17740 bytes
SHA-256: 10b2cb18ad65e0258ee60478308704d7ce461ea6e96966d3074cbbc7d85d873a