Malicious PDF — malware analysis report

Static analysis result for SHA-256 944fec2accbd930b…

MALICIOUS

PDF

35.1 KB Created: 2021-07-04 04:56:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 1151de2858c5b46855d2475a0823668e SHA-1: 4668905179d381c47730194526aac25077dd9085 SHA-256: 944fec2accbd930ba7d11cb5ea4769740cf763a5a3120aa524f1b1f2812e7d21
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links, including one to a known malicious redirector infrastructure at http://netcdn.tw/app/431946152/how-to-get-free-robux-fast-and-easy-game-hack. The document body and heuristics indicate a lure for game hacks or currency, likely leading to further malicious content or malware. No scripts were extracted, but the embedded URLs and redirector findings strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/how-to-get-free-robux-fast-and-easy-game-hack In PDF document text
    • http://danginpurikauh.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-robux-live-stream-zataf-plays_GM431946152.pdfIn PDF document text
    • http://danginpurikauh.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-robux-mac-no-survey_GM431946152.pdfIn PDF document text
    • http://danginpurikauh.denpasarkota.go.id/new/public/ckfinder/userfiles/files/minecraft-free-download-windows-10_GM479516143.pdfIn PDF document text
    • http://danginpurikauh.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-hacks-for-gold-cards_GM406889139.pdfIn PDF document text
    • http://danginpurikauh.denpasarkota.go.id/new/public/ckfinder/userfiles/files/google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://danginpurikauh.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-hack-ios-reddit_GM406889139.pdfIn PDF document text
    • http://danginpurikauh.denpasarkota.go.id/new/public/ckfinder/userfiles/files/real-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://danginpurikauh.denpasarkota.go.id/new/public/ckfinder/userfiles/files/roblox-phantom-forces-flame-cheat_GM431946152.pdfIn PDF document text
    • http://danginpurikauh.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-roblox-svg_GM431946152.pdfIn PDF document text
    • http://danginpurikauh.denpasarkota.go.id/new/public/ckfinder/userfiles/files/best-way-how-to-change-your-roblox-username-for-free_GM431946152.pdfIn PDF document text
    • http://danginpurikauh.denpasarkota.go.id/new/public/ckfinder/userfiles/files/download-noclip-hack-for-roblox_GM431946152.pdfIn PDF document text
    • http://danginpurikauh.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-roblox-generator_GM431946152.pdfIn PDF document text
    • http://danginpurikauh.denpasarkota.go.id/new/public/ckfinder/userfiles/files/roblox-free-skin_GM431946152.pdfIn PDF document text
    • http://danginpurikauh.denpasarkota.go.id/new/public/ckfinder/userfiles/files/offers-for-robux_GM431946152.pdfIn PDF document text
    • http://danginpurikauh.denpasarkota.go.id/new/public/ckfinder/userfiles/files/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://danginpurikauh.denpasarkota.go.id/new/public/ckfinder/userfiles/files/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://danginpurikauh.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-robux-real-no-human-verification_GM431946152.pdfIn PDF document text
    • http://danginpurikauh.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-roblox-girl-hair-not-a-model_GM431946152.pdfIn PDF document text
    • http://danginpurikauh.denpasarkota.go.id/new/public/ckfinder/userfiles/files/master-coins-free_GM406889139.pdfIn PDF document text
    • http://danginpurikauh.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-15-free-spin-link-of-last-5-days_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_off00003334.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3334 21848 bytes
SHA-256: f11ff4e51ec72bf2620e0273088f5b442c2f1cd2049519acccc35149e972c8eb
font_01_sfnt_off000062ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62EF 19340 bytes
SHA-256: e9e0cf1ab6f783e57183aba6e7ab34e8b0edef29a09b47d1de428d0435b690df

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