Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4079b4db0c2c979…

MALICIOUS

PDF

35.2 KB Created: 2021-07-04 08:05:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 12e067191a2208ef8f6b8d23a704ae85 SHA-1: 6b30e0e2ecf7d09989785f96c5e9ee99bb6eff93 SHA-256: f4079b4db0c2c979a21cc76ae354b457cc05953caaafadcf151f52dac245ee2d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one identified as a known malicious redirector infrastructure. The primary lure appears to be a 'game hack generator' which, upon clicking, redirects the user to a malicious URL. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users 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/406889139/coin-master-stop-attack-hack-game-hack In PDF document text
    • https://www.sonestad.se/library/repository/free-spin-appscoin-master_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/daily-spin-and-coin_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/roblox-catalog-free_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/free-roblox-pin-codes_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/i-love-free-robux_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/free-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/how-to-get-btools-in-roblox-with-cheat-engine_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/free-minecraft-pe-server_GM479516143.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/best-free-minecraft-servers_GM479516143.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/woman-roblox_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/robux-withdraw_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/free-robux-survey_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/free-robux-com-real_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-free-attack-link_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/free-spin-generator-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/free-robux-net_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/how-to-get-free-robux-on-chromebook_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/earn-robux-gg-earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/aimbot-exe-roblox_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_off00003300.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3300 23144 bytes
SHA-256: f1e97dc9c4a14a05ad99159c50de5165963b3634d47c5664a9777de42c6565dc
font_01_sfnt_off00006738.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6738 18180 bytes
SHA-256: b1b9747a848d73205401646fbd718c8c1bd2deb8ea30ebe3759820114ba25220

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