Malicious PDF — malware analysis report

Static analysis result for SHA-256 decaf72400e977d5…

MALICIOUS

PDF

46.1 KB Created: 2021-06-03 05:09:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 234feaca0ee48390b158261554c009c4 SHA-1: b624bed10c6e635ffcd56b1b548aa9d473f723c0 SHA-256: decaf72400e977d584f2aae9b65e031dd460e9f927ca1e890bf304423df170a9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to a malicious URL, masquerading as a game hack generator. The document body and embedded URLs strongly suggest a lure for users seeking in-game advantages, which is a common tactic for phishing and malware distribution. The presence of multiple redirector links indicates a deliberate attempt to lead the user to a potentially harmful site.

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/roblox-ultimate-driving-westover-islands-how-to-get-free-cars-game-hack In PDF document text
    • http://perpus.stihpada.ac.id/repository/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/free-coin-master-generator_GM406889139.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/coin-master-hack-game-download_GM406889139.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/daily-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/roblox-executor-free-download_GM431946152.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/how-to-hack-minecraft_GM479516143.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/coin-master-free-attack-hack_GM406889139.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/cheats-coin-master-free_GM406889139.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/rewards-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/what-is-exploiting-in-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/roblox-com-hack_GM431946152.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/coin-master-free-spins-link-2021-iphone_GM406889139.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/free-robux-gift-card_GM431946152.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/roblox-hacking-website_GM431946152.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/coin-master-rewards-2021_GM406889139.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_004_off000053e5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x53E5 24772 bytes
SHA-256: 3f39b6a88f517c8b32af016729adca930361a6a878713d6813b324f20683b7d9
font_01_sfnt_off00008c9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C9B 19952 bytes
SHA-256: 9509ec879a1b7ad7bc0e890bf3a03f90bfcf57d807987eed2582e799648d4a34

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