Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6c4fe8ec1236cf1…

MALICIOUS

PDF

35.4 KB Created: 2021-06-28 05:30:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a0f504322fe59824c01f8ec146556b5d SHA-1: 6f45f6a9bfa039ec636cf260a4e3df975c4b8998 SHA-256: d6c4fe8ec1236cf1054891d3dae7657a6e93019be57b8e05072d3ccb5f81cbf7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically advertising 'game hacks' and 'free generators' for popular games. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms the presence of known malicious redirectors. The document body and embedded URLs suggest a lure for users seeking cheats or in-game currency, which is a common tactic for phishing or malware distribution.

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.co/app/431946152/april-12th-2021-roblox-hackings-game-hack In PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/krnl-download_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/how-to-hack-roblox-accounts-with-inspect-element_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/roblox-digimon-aurity-cheat-engine_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/roblox-robux-hack-no-survey-no-verification_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/groupe-nicdaraiche-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/coin-master-rewards-2021_GM406889139.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/minecraft-bedrock-free-download_GM479516143.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/free-robux-gen-no-verification_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/roblox-lumber-tycoon-money-hack_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/how-to-get-free-robux-easy-on-a-phone_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/roblox-hack-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/free-robux-generator-for-kids_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/game-stealing-service-free-roblox_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/free-robux-robux-boost_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/denis-free-robux-app_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_off0000314c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x314C 22604 bytes
SHA-256: 811c95da063b5f019af96e00d75f4a75be75ff2e7bfa7d36babf43d101b44241
font_01_sfnt_off0000638f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x638F 19624 bytes
SHA-256: b7e49121434009d6890524dafb3eb34ca57839e9255f85f32dc5dfb12030f2e0

Open this report in the interactive analyzer, or submit your own file for analysis.