Malicious PDF — malware analysis report

Static analysis result for SHA-256 349dafb28d13b06e…

MALICIOUS

PDF

50.1 KB Created: 2021-06-02 20:22:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2eadea5d4d4a9bb6f58fb423084786ed SHA-1: 2b125a0d966f56dd5e635aec04f6cce1e947c512 SHA-256: 349dafb28d13b06ecdbf7b70b5ee539931cdc8c2225a7616c139ddd238c59670
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and websites offering 'free generators' or 'hacks' for popular games. These lures are designed to trick users into clicking through to potentially malicious content. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the embedded URLs and heuristic firings clearly point to a malicious redirector workflow.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9789

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 https://netcdn.xyz/app/431946152/roblox-wall-hacks-2021-game-hack In PDF document text
    • http://tah-li.com/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://tah-li.com/images/minecraft-bedrock-free-server-hosting_GM479516143.pdfIn PDF document text
    • http://tah-li.com/images/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://tah-li.com/images/free-tiktok-followers-no-downloads_GM835599320.pdfIn PDF document text
    • http://tah-li.com/images/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • http://tah-li.com/images/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://tah-li.com/images/roblox-svg-free_GM431946152.pdfIn PDF document text
    • http://tah-li.com/images/minecraft-java-edition-free-download_GM479516143.pdfIn PDF document text
    • http://tah-li.com/images/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://tah-li.com/images/free-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://tah-li.com/images/free-group-roblox_GM431946152.pdfIn PDF document text
    • http://tah-li.com/images/coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • http://tah-li.com/images/free-coin-app_GM406889139.pdfIn PDF document text
    • http://tah-li.com/images/coin-master-free_GM406889139.pdfIn PDF document text
    • http://tah-li.com/images/play-minecraft-online-free_GM479516143.pdfIn PDF document text
    • http://tah-li.com/images/minecraft-pe-017-0-apk-free-download-android_GM479516143.pdfIn PDF document text
    • http://tah-li.com/images/roblox-animation-pack-free_GM431946152.pdfIn PDF document text
    • http://tah-li.com/images/free-robux-easy-and-fast_GM431946152.pdfIn PDF document text
    • http://tah-li.com/images/roblox-jailbreak-hack_GM431946152.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
stream_004_off000051a0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51A0 28716 bytes
SHA-256: cfd3faec39b2d9ca8d0747e69f94de19fae503b18835fb42c9821fed0ae817a0
font_01_sfnt_off0000928b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x928B 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off00009f9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F9D 18784 bytes
SHA-256: cfc7f94bbdd1e94bfb6907894b56b28585eb2f286728139e1fdc12eac5520842

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