Malicious PDF — malware analysis report

Static analysis result for SHA-256 5de0761f4c4fc87a…

MALICIOUS

PDF

52.1 KB Created: 2021-06-07 16:06:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6a684a5b2363713f31fa3ae87a376373 SHA-1: b5efde3e944088c46c58a3e5f9be6f0fd7b3b277 SHA-256: 5de0761f4c4fc87a96bc6e6bbef99ab85b5fc9cffbfb5b7bfa7196fa0cc301e4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and infrastructure, disguised with lures related to game hacks and free currency. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded links strongly indicate a phishing or malware distribution attempt, likely initiated via a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9657

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.tw/app/431946152/80-robux-free-game-hack In PDF document text
    • http://www.friendshiptransport.net/images/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.friendshiptransport.net/images/krnl-download_GM431946152.pdfIn PDF document text
    • http://www.friendshiptransport.net/images/free-robux-password-required_GM431946152.pdfIn PDF document text
    • http://www.friendshiptransport.net/images/www-roblox-robux_GM431946152.pdfIn PDF document text
    • http://www.friendshiptransport.net/images/e-free-roblox_GM431946152.pdfIn PDF document text
    • http://www.friendshiptransport.net/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.friendshiptransport.net/images/how-to-earn-robux_GM431946152.pdfIn PDF document text
    • http://www.friendshiptransport.net/images/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.friendshiptransport.net/images/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://www.friendshiptransport.net/images/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://www.friendshiptransport.net/images/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.friendshiptransport.net/images/free-disney-plus-accounts-tiktok_GM835599320.pdfIn PDF document text
    • http://www.friendshiptransport.net/images/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.friendshiptransport.net/images/free-minecraft-mods-for-ps4_GM479516143.pdfIn PDF document text
    • http://www.friendshiptransport.net/images/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.friendshiptransport.net/images/coin-master-free-spins-link-2021-hack_GM406889139.pdfIn PDF document text
    • http://www.friendshiptransport.net/images/roblox-money-hack_GM431946152.pdfIn PDF document text
    • http://www.friendshiptransport.net/images/hack-app-for-roblox-pet-simulator_GM431946152.pdfIn PDF document text
    • http://www.friendshiptransport.net/images/minecraft-free-install_GM479516143.pdfIn PDF document text
    • http://www.friendshiptransport.net/images/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005085.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5085 28424 bytes
SHA-256: b62620d29933f0e44844356c5f7f1453a80af2e6a464508db70b715fd895897d
font_01_sfnt_off000090bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90BD 3400 bytes
SHA-256: 4b3e0f36ad1e0c7e3ea5c178fd2b4f097d1e01575fc6a4101a8b520db34dfe07
font_02_sfnt_off00009be2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BE2 5596 bytes
SHA-256: 9a13c2580265a78e8a7257496a31ee0055738af7e20a5661c2902efe4bf05ce5
font_03_sfnt_off0000a88a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA88A 18396 bytes
SHA-256: cffbe31474be72dcd240cbb47fdef8d42c4ca938da499e39f2a8876f457e1751

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