Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf174efe60029040…

MALICIOUS

PDF

34.2 KB Created: 2021-07-03 15:34:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 3b3bcabe8de53db87a76927beed4cd75 SHA-1: e55ae506867e265ea6e332abcb18022ca77c4fd0 SHA-256: bf174efe60029040e4a79ebdecafbe25baaf409fa5d656f41e06b195b3d22274
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/406889139/free-spins-and-coins-for-coin-master-game-game-hack PDF link annotation
    • http://stikespantirapih.ac.id/home/repository/free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/el-mejor-hack-de-roblox-del-mundio-201_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/hacks-para-roblox-jailbreak-2021-descargar_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/mythical-chaos-robux-hack-v3-0_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/cheats-for-city-arcatect-roblox_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-phantom-forces-mod-free-weapons_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-arcane-adventures-hack_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-robux-thumbnail_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-roghoul-hack_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-lua-script-snow-board-resort-hack_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/assisin-roblox-hack_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-robux-com-no-verification_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-game-free-download_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/easy-robux-hack_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/hacking-my-roomates-roblox-account_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-free-coins-generator_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/minecraft-marketplace-free_GM479516143.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-roblox-invitations-loadstrings-full-lua-free-no-virus_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-robux-no-surbey_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_off00002fd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FD6 22676 bytes
SHA-256: b7286014aa4653c52199619343b020240248964e816014e50e912a67bec85cab
font_01_sfnt_off00006226.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6226 18608 bytes
SHA-256: 31982f023cf9e8334e0247a56239ce43a369afef10c4502d97e5781750ca878f

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