Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc3f9f9bb22e6dae…

MALICIOUS

PDF

33.7 KB Created: 2021-06-20 01:09:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6bba5273f562930c4b26cab03716d085 SHA-1: 87338c459b024403e496250ca7c3ea877e11249c SHA-256: cc3f9f9bb22e6daeb516c3e1a2501e1b8d407b6562cccfeb7c95c3c0d21eb9f3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to malicious infrastructure, specifically promoting "free generator / game hack" lures. The heuristic firings confirm these links point to known malicious redirectors and game hack scams. While no scripts were extracted, the document's primary function appears to be social engineering users into visiting these malicious URLs, likely as a first step in a phishing or malware delivery chain.

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/farming-simulator-money-cheat-roblox-game-hack In PDF document text
    • https://lib.unitri.ac.id/repository/free-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/how-to-get-free-things-on-roblox_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/robloxfun-com-generator_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/free-robux-instantly_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/free-robux-gen_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/youtube-free-robux-november-13-2021_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/how-to-download-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/free-spins-coin-master-links-blogspot_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/haktuts-2021-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/minecraft-xbox-360-free_GM479516143.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/minecraft-tiktok-hacks_GM479516143.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/free-spins-coin-master-october-13-2021_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/free-robux-codes-not-used_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/free-coin-master-gifts_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/hacks-robux-2021-gebraucht_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/conquerors-3-roblox-cheats_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/free-coins-coin-master-ios_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/who-to-get-free-robux_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_off00002ac9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AC9 22456 bytes
SHA-256: ef6aae4ec6caa8579f04c28d335a81824ed271a66e3ec29d829199a939f6d9f1
font_01_sfnt_off00005cd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CD9 19816 bytes
SHA-256: d68fe63ea24e63512316bfbac60a0001663e64519b8db79268fb7f39948043da

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