Malicious PDF — malware analysis report

Static analysis result for SHA-256 78e2c69208cb1855…

MALICIOUS

PDF

33.9 KB Created: 2021-06-18 21:31:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 08ca380838fb10b5121d5956dd5de45e SHA-1: 51c6314c61510d937828713e2f149d29fc0190a3 SHA-256: 78e2c69208cb18552d3393db9961ba35d872f89cc006034d28e8a6882d646293
160 Risk Score

Malware Insights

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

This PDF document contains multiple links to known malicious redirectors, disguised as "free generator" or "game hack" lures. The primary URL, http://netcdn.co/app/431946152/download-roblox-for-free-on-mac-game-hack, is presented as a download for Roblox. The presence of these links and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content or downloads.

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/download-roblox-for-free-on-mac-game-hack In PDF document text
    • https://www.elevage-chiot.fr/images/free-robux-survey_GM431946152.pdfIn PDF document text
    • https://www.elevage-chiot.fr/images/robux-only_GM431946152.pdfIn PDF document text
    • https://www.elevage-chiot.fr/images/minecraft-toys-for-free_GM479516143.pdfIn PDF document text
    • https://www.elevage-chiot.fr/images/free-spins-on-coin-master-cheat_GM406889139.pdfIn PDF document text
    • https://www.elevage-chiot.fr/images/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.elevage-chiot.fr/images/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • https://www.elevage-chiot.fr/images/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • https://www.elevage-chiot.fr/images/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • https://www.elevage-chiot.fr/images/roblox-speed-hack_GM431946152.pdfIn PDF document text
    • https://www.elevage-chiot.fr/images/make-free-robux_GM431946152.pdfIn PDF document text
    • https://www.elevage-chiot.fr/images/coinmaster-com_GM406889139.pdfIn PDF document text
    • https://www.elevage-chiot.fr/images/how-to-get-free-tokens-in-minecraft-ps4_GM479516143.pdfIn PDF document text
    • https://www.elevage-chiot.fr/images/how-to-get-minecraft-for-free-on-xbox-360_GM479516143.pdfIn PDF document text
    • https://www.elevage-chiot.fr/images/free-roblox-gift-card_GM431946152.pdfIn PDF document text
    • https://www.elevage-chiot.fr/images/coin-master-hack-pc-cheat-engine_GM406889139.pdfIn PDF document text
    • https://www.elevage-chiot.fr/images/como-generar-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.elevage-chiot.fr/images/how-to-get-free-robux-july-2021_GM431946152.pdfIn PDF document text
    • https://www.elevage-chiot.fr/images/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.elevage-chiot.fr/images/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • https://www.elevage-chiot.fr/images/roblox-hack-generator_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
stream_002_off00002da6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2DA6 22256 bytes
SHA-256: e56629d2a441814bc41f2e713ecd1b98225fd08c27d64785ae0831e7802536ec
font_01_sfnt_off00005efc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EFC 19164 bytes
SHA-256: 15a15cb9fb689d79fb3d03c6ad83a1acb476be3854a66b9c41bb6f34e4cba2ae

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