Malicious PDF — malware analysis report

Static analysis result for SHA-256 a54a69cfe0b57bf5…

MALICIOUS

PDF

35.1 KB Created: 2021-07-04 12:29:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d96e83add008060b640e127b60529596 SHA-1: 26d73585bda1eccdcb663499ec8713369d5d96f4 SHA-256: a54a69cfe0b57bf5b936b1071c97c2a8ee540f7235a9f5f72a94fddb23aeb27d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and generators. The heuristic firings indicate that the document is designed to lure users into clicking these links, likely leading to further malware downloads or scams. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

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.tw/app/431946152/roblox-moderators-game-hack In PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/minecraft-toys-for-free_GM479516143.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/mobile4free24-free-robux_GM431946152.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/roblox-phantom-forces-aimbot-mod-download-free-2021_GM431946152.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/how-to-get-free-admin-on-roblox-mad-murderer-2_GM431946152.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/how-to-get-2021202120219-robux-for-free_GM431946152.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/minecraft-java-edition-download-free_GM479516143.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/coin-master-game-free-download-for-pc_GM406889139.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/free-robux-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/free-roblox-toy-codes-not-used_GM431946152.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/roblox-free-car_GM431946152.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/roblox-free-brick-pants_GM431946152.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/free-robux-android_GM431946152.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/how-do-you-hack-in-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/free-robux-easy-fast-ligit_GM431946152.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/funny-roblox-characters-free_GM431946152.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/free-800-robux_GM431946152.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/roblox-com-www_GM431946152.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/minecraft-net-free_GM479516143.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_002_off000030e3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x30E3 22932 bytes
SHA-256: 69f6ecd8bb9c97f5a37559870e469119be8cc116a6a9ff489d27d44efedbe7a4
font_01_sfnt_off00006465.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6465 18960 bytes
SHA-256: c9d852ee3d1c2440833dae6aa7c06b9bea994edf728c721d6eb665774c0b0edb

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