Malicious PDF — malware analysis report

Static analysis result for SHA-256 741d264362bc01a3…

MALICIOUS

PDF

34.2 KB Created: 2021-07-06 03:32:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0f3476815beb308d1e7d9c79fbd34ab1 SHA-1: f29fc273f2420a508675092a37cf5f2875283261 SHA-256: 741d264362bc01a32a94bd89b172566ddafc1e50b28fecd7ee91dab93ec864fa
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game hacks and currency to trick users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, likely serving as a gateway to further malicious content or exploits. The ML classifier strongly indicates malicious intent, and the presence of numerous related URLs reinforces this assessment.

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/fast-robux-online-game-hack In PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-roblox-accounts-september-2021_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/farming-simulator-roblox-cheats_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/ios-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/roblox-2021-how-to-cheat-in-fencing_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/how-to-make-clothes-without-hacks-or-bc-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-roblox-shiny-charm-for-pokemon-brick-bronze_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/how-to-get-minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/roblox-bubble-gum-simulator-pet-hack_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/coin-master-hack-online-android_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/people-who-hacked-roblox-and-got-unlmitited-robux_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-spins-for-coin-master-on-1-19-19_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/how-to-get-free-robux-on-tablet-2021_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-gamepasses-roblox-2021_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-flower-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/minecraft-hacks-list_GM479516143.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/how-to-get-free-minecraft-windows-10_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
font_00_sfnt_off00002edf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EDF 22708 bytes
SHA-256: 1cf5ee1523285f964907e016c38ddb8278902ccc90a320f534807cbd3f4b46fe
font_01_sfnt_off000060d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60D7 19012 bytes
SHA-256: 6a86dad0a44576fd5d167cee877b2a83cfe45df68e21e5883b60c7263b6ff498

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