Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3afbb3a5d22c358…

MALICIOUS

PDF

45.6 KB Created: 2021-06-03 15:00:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f1e45aaf58fe8d936bf7bf59229299f1 SHA-1: 2821605118ea03ed2fc6cd9c76e17963942cab64 SHA-256: a3afbb3a5d22c35801caa9ab683a2b2353f370f53af898da5a6af31a9b16d9e6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to known malicious infrastructure, specifically promoting game hacks and generators. The document body and extracted URLs suggest a lure for users seeking in-game currency or cheats, which is a common social engineering tactic. No scripts were extracted, but the presence of malicious redirectors and the lure indicate a high likelihood of further malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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 https://netcdn.online/app/431946152/hacks-for-trading-pet-simulator-roblox-game-hack In PDF document text
    • http://elibrary.perludem.org/repository/earn-robux-now_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/roblox-script-hack_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/cm-daily-spins_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/hack-roblox-players_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/how-to-get-minecraft-for-free-2021_GM479516143.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/pokemon-go-free-4k_GM1094591345.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/minecraft-hack-client-download_GM479516143.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/roblox-hack-site_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/how-to-hack-coin-master-game-without-verification_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-links-that-don-t-expire_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/minecraft-bedrock-hacks-windows-10_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/easy-robux-today_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-roblox-com_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/how-to-get-minecraft-for-free-on-chromebook_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-heaven-free-spins-today_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/how-to-get-free-spins-on-coin-master-2021_GM406889139.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
stream_004_off000051b9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51B9 25988 bytes
SHA-256: 2c1d498a0ba55683c2444425dcd3fffeae1a1609d96bf9e5dcb1923c2ce075cd
font_01_sfnt_off00008bf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BF8 19588 bytes
SHA-256: 458f32b3472c46721f7e143ec7ef6d0ec3fb33e81c638281a521e23d297fa919

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