Malicious PDF — malware analysis report

Static analysis result for SHA-256 00ff222a79b009d8…

MALICIOUS

PDF

34.6 KB Created: 2021-06-26 07:13:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 5590162e15d8bafd3fc39862bbe0efd5 SHA-1: c99aa461482dad070ffdee51c2747ef78a71151d SHA-256: 00ff222a79b009d881cac1915bbff2772c360cc974880d83845c81eb9c0bea76
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to known malicious infrastructure, disguised as game hacks and generators. The document body and embedded URLs suggest a lure for users seeking free in-game currency or cheats, which is a common social engineering tactic. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.co/app/431946152/roblox-glasses-free-game-hack In PDF document text
    • http://lib.smklabor.sch.id/repository/big-brother-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-20212021202120212021202120212021202120212021202120219-robux_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-accounts-i-hacked_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/get-free-robux-now-2021_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/minecraft-logo-maker-free_GM479516143.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-get-free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-hack-blogspot_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/husky-800m-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/earn-robux-today-for-free_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/easy-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/regal-world-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/any-roblox-game-pass-free-script_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/get-free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-give-free-robux-to-friends_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/real-roblox_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/oprewards-robux-hack_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_off000031c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31C3 22324 bytes
SHA-256: b367767c3ee30d2ad7c4307a2b411a0b7c6427f19d6e6cce05c876ba8259c6bd
font_01_sfnt_off0000637c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x637C 18652 bytes
SHA-256: 71043c8e0ca9b2b7fd466cc993626251ae67aa6c73713234d01c70e9367d2d22

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