Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ffd15e313ba0e63…

MALICIOUS

PDF

45.3 KB Created: 2021-06-13 23:46:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b815ac487b958602c81d529a3439829f SHA-1: 447e5a972c7c7372078407f08d0044f0a31d63f9 SHA-256: 3ffd15e313ba0e6357bd6bf28c5cfcee414274da75d23cee5575cc12f3aca3c5
160 Risk Score

Malware Insights

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

This PDF document contains multiple links, including one that redirects to known malicious infrastructure. The primary lure appears to be related to game hacks and cheats, aiming to trick users into clicking the malicious link. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content or further stages of an attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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/cheat-code-for-roblox-tides-knife-game-hack In PDF document text
    • http://feuerwehr-rheinau.de/images/coin-master-free-100-spin-link_GM406889139.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/minecraft-hacks-list_GM479516143.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/free-spins-coin-master-links-blogspot_GM406889139.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/robloxheroxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/free-game-pass-roblox-2021_GM431946152.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/roblox-hack-site_GM431946152.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/dodgeball-roblox-hack_GM431946152.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/como-hackear-coin-master-2021-espaol_GM406889139.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/is-there-a-free-version-of-minecraft_GM479516143.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/free-mods-for-coin-master_GM406889139.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/fbchampion_GM406889139.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/pokemon-go-kanto-tour-free-version_GM1094591345.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/hacks-on-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/minecraft-bedrock-edition-free-with-java_GM479516143.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/free-accessories-roblox_GM431946152.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/how-to-get-free-unlimited-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/ninja-hack-roblox_GM431946152.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/minecraft-texture-packs-free-download_GM479516143.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/free-robux-kid-friendly_GM431946152.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004b0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B0B 23672 bytes
SHA-256: ee125724db97227e50096c56d08669237d4f401a8395d53963a56d4610d4e84e
font_01_sfnt_off000080a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80A0 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off00008d48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D48 18740 bytes
SHA-256: 8a7cf8ab6d3501424e977949b21a31762994f28c453d644b99f152def6ea8f49

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