Malicious PDF — malware analysis report

Static analysis result for SHA-256 924aff1640ed3835…

MALICIOUS

PDF

33.7 KB Created: 2021-06-27 03:07:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: dbf788a0973de2dd622a2ac6d149ef7c SHA-1: 2eb65af21eb619b51d264450e78423de6daeb10f SHA-256: 924aff1640ed38355c99ad9ea4d299a8f0f732a9402172c31dfa5aadffa4b5b7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating malicious redirector links, specifically targeting users with lures for game hacks and generators. The document body contains a prominent URL that leads to known malicious infrastructure, likely serving as a lure to download further malware or engage in phishing. No scripts were extracted, but the overall pattern suggests a social engineering attack to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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-free-without-sign-in-no-download-game-hack In PDF document text
    • https://perpustakaan.stifar.ac.id/repository/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/hacking-roblox-people_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/free-roblox-accounts-with-robux-pastebin_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/coin-master-2021-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/infinite-money-hack-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/free-spins-coin-master-2021-app_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/working-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/hack-para-tener-robux-gratis-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/rewards-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/best-roblox-best-troll-hacks_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/how-to-get-free-robux-as-a-kid_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/free-roblox-account-rich-ro-ghoul_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/mcpe-master-free-coins_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/free-coin_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/hack-one-piece-millenium-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/is-roblox-cheat-engine-safe_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_off00002a9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A9F 22480 bytes
SHA-256: 05c2e4ee31350896898e2e95befdeff32a230791f8162601af8949606d667807
font_01_sfnt_off00005ca2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CA2 19884 bytes
SHA-256: 6a82ec64f64b90b5f5134a5e977041491f434d5de72cb072461bc23648b9544a

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