Malicious PDF — malware analysis report

Static analysis result for SHA-256 75e0379635538509…

MALICIOUS

PDF

41.8 KB Created: 2021-05-12 04:12:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b59772ac213abe61159b927062e1c3c8 SHA-1: bbc4ab21156a4ccb8c684ad8732379a6fcc2bb07 SHA-256: 75e0379635538509057ffbbc5f54a65c2c16ae52d050fb4d8c6a2bf857d2bf45
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to a malicious domain, identified as a lure for game hacks and generators. The ML classifier strongly indicates maliciousness. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a phishing or scam attempt, likely leveraging a social engineering pretext to drive traffic to the malicious redirector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/431946152/free-robux-without-human-verification-game-hack In PDF document text
    • http://www.perpus.stfm.ac.id/repository/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/get-me-free-robux_GM431946152.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/coin-master-free-online_GM406889139.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/minecraft-pe-free_GM479516143.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/free-spins-for-coin-master-that-work_GM406889139.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/roblox-hacks-and-cheats_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/coin-master-free-spins-link-today-ios_GM406889139.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/free-coin-master-hacks-no-verification_GM406889139.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/coin-master-get-free-cards_GM406889139.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/robux-generators-that-actually-work_GM431946152.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/hacked-roblox-accounts-list_GM431946152.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/claim-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/roblox-free-skin_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/mine-minecraft-games-for-free_GM479516143.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/roblox-royale-high-diamond-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
stream_003_off00004661.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4661 24376 bytes
SHA-256: 597a5ba01e0674d40c1f4c865ed442437b631d40d50fbca3f0830fc5bbd8013c
font_01_sfnt_off00007e5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E5B 19224 bytes
SHA-256: 69162c0303826e3a88150cee7b6b12b50ba56e04bc46253c0e5eb9f80ac8a399

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