Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fe556b41374f3e3…

MALICIOUS

PDF

33.0 KB Created: 2021-07-08 16:58:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: caad443d5200250cfa4fd6181f26cffd SHA-1: 7d413e7b794e07de1507cf7c5e16e6119a1b87e3 SHA-256: 8fe556b41374f3e31e551bdf2ba81e26ff7d486cc0128f033114e131e819b51a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links that redirect to known malicious infrastructure, specifically promoting 'game hacks' and 'generators'. The ML classifier strongly flagged this PDF as malicious. The primary IOC is the redirector URL, which is designed to lure users into clicking through to potentially harmful content.

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/479516143/minecraft-svg-images-free-game-hack In PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-bypass-key-systems-on-roblox-cheats_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-hack-money-on-roblox-games_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-and-tix-for-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/minecraft-java-free-trial_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/cuantas-hackeadas-de-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-links-to-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/pig-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-com-hack_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-studio-hack-message_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/earn-free-robux-legally_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/bux-life-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/hack-coin-master-8-ball-pool_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/robux-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-free-printables-part_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-cheat-on-roblox-murder_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-robux-reddit_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-free-coins-spins_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-spins-coin-master-2021-no-verification_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-free-spins-hack-ios_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
font_00_sfnt_off00002ecc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2ECC 21924 bytes
SHA-256: 6336fbf883fd7132c7b3dadd1964c8ccfbf2e4640ba482b294fde8722ec0575a
font_01_sfnt_off00005e96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E96 18232 bytes
SHA-256: a09b643334d2e6be4f3f41432578bfd2746235ab347d952591db22e0a7ac2c60

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