Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6c167d8db84d057…

MALICIOUS

PDF

33.3 KB Created: 2021-07-05 19:40:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: c75a4b7102c2fc67bdf8d613b3a0b10e SHA-1: 126080a2222b2afcbc8bcad65e497bd191b8cb15 SHA-256: f6c167d8db84d0574605db991549f2eaeb9f90173b1fee7aa828a0a84f533913
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/479516143/how-to-get-a-free-minecraft-server-game-hack PDF link annotation
    • http://opac.salatiga.go.id/slims7/repository/coin-master-hack-app-android-download_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/cache-http-wwwrobuxiancom-freerobuxcodegenerator_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/como-hackear-juego-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-mobile-games-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/roblox-sign-in-free_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/cheat-engine-roblox-fr_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-bugatti-jailbreak-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/how-to-get-get-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/extra-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/robux-withdraw_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/roblox-un-jailbreak-hack_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/how-to-cheat-in-roblox-eep-city-starball_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/heroes-online-free-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/minecraft-ios-mods_GM479516143.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-robux-just-by-watching-videos_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/archery-master-3d-hack-unlimited-coins-cheats_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/minecraft_GM479516143.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_off00002f3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F3C 21952 bytes
SHA-256: e0e58cb28095f3199414c94952a96130b281e8ed61e2e7c4206614a774a297a3
font_01_sfnt_off00005f54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F54 18276 bytes
SHA-256: c7687a4ed826b999755e6fe3d140333e3438c4cba827dc1a6d1eeb6d89324bde

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