Malicious PDF — malware analysis report

Static analysis result for SHA-256 afb7f059ae28f458…

MALICIOUS

PDF

34.1 KB Created: 2021-07-05 16:53:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 10cb3eb5de34fb863a5da4947ef18345 SHA-1: 5d73d7d0bb7276151a9a6a27e47f3910e79d033e SHA-256: afb7f059ae28f4585af9a58fccf7de2c8c2295b359c2ea801c7dd062844fb411
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of 'free game hacks' to entice users to click on embedded links. The primary link, http://netcdn.tw/app/431946152/easy-free-robux-website-game-hack, redirects to potentially malicious content. While no scripts were explicitly extracted, the PDF structure and heuristics indicate it's designed to lead users to external sites for malicious purposes, likely phishing or malware distribution.

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/431946152/easy-free-robux-website-game-hack PDF link annotation
    • http://opac.salatiga.go.id/slims7/repository/get-free-shirts-on-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-robux-group-funds-bot_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/adoptme-club-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-robux-websites-scam-link_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/free-coins-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/roblox-rape-hack_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/ios-robux-hack_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/free-minecraft-mods-for-xbox-one_GM479516143.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/how-to-get-free-robux-kindle-fire_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/hack-shrek-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/try-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/roblox-fly-hack-cheat-engine-2021_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/roblox-jailbreak-how-to-get-free-radio-deutsch_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/roblox-item-free-2021_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/coin-master-32-hack-apk_GM406889139.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_off00002cdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CDC 22492 bytes
SHA-256: 0547c04a6ead338ec3db3fa7de3f99a75d2246617cbceb8fd3ad22e01597a1a5
font_01_sfnt_off00005f15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F15 19320 bytes
SHA-256: 6673e118e73f4fb5a7f48d23bc7653d5ef30e2753f07f659ac03f59b5c081d62

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