Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc46f48b1aa800fb…

MALICIOUS

PDF

34.4 KB Created: 2021-06-29 03:14:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: b6561843adbac322710f3460e235a8ca SHA-1: ee3ef893f551d2ab43d162af4ddbc13c468d0751 SHA-256: cc46f48b1aa800fbdf178e3f61c2582c3cca8fbc95c70582f9079928a38d2dec
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for free Robux and game hacks, directing users to a URL associated with malicious redirector infrastructure. The ML classifier also flagged this PDF as malicious. The embedded URL is likely intended to download a second-stage payload or lead the user to a phishing site.

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/free-robux-no-bot-check-for-real-game-hack In PDF document text
    • https://perpustakaan.stifar.ac.id/repository/bloxy-world-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/island-royale-roblox-hack-script_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/roblox-building-simulator-free-time-maschin_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/free-roblox-gift-card-codes-2021-june_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/boku-no-roblox-cheat_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/minecraft-anarchy-server-no-hacks_GM479516143.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/cheats-for-roblox-jailbreack_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/coin-master-games-hack_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/hack-para-mad-city-roblox-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/how-to-cheat-roblox-jailbreak-glitches_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/free-clothing-codes-for-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/free-minecraft-for-kids_GM479516143.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/free-coin-and-spin-link_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/dead-winter-roblox-hack_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/roblox-hack-download-games_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/free-roblox-followers-generator_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/free-robux-no-download_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/robuxian-free-robux-hack-script_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002fe8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FE8 22188 bytes
SHA-256: a42f4547f84ce5db061dce6461c13cf8395e05fc81a660b5edcd38cda4916ccf
font_01_sfnt_off00006119.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6119 19232 bytes
SHA-256: ef6f37e03fcd888c9a3c0318f8b667176fcf8ac880a591c6e15c2cc2032b12e4

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