Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff8d1727d9c2af2d…

MALICIOUS

PDF

35.2 KB Created: 2021-06-27 13:32:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 049e1d27f350b39c6a597d4a1da4dfed SHA-1: f2350b79cb7dead6ccac18b48e742e94e67d3781 SHA-256: ff8d1727d9c2af2d3d9aafe62cd9f8dc61006aa6df222fad77ffade4544ecad9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to known malicious infrastructure, specifically promoting 'free generators' and 'game hacks' for popular games. The document body and heuristics indicate a lure designed to trick users into visiting these malicious sites, likely for further malware delivery or credential harvesting. No scripts were extracted, but the presence of malicious redirector links is a strong indicator of malicious intent.

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/roblox-cheat-generator-free-download-game-hack In PDF document text
    • https://jdclassicautoparts.com/image/data/files/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/minecraft-hacks-pc_GM479516143.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/roblox-hair-for-free_GM431946152.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/free-tiktok-followers-generator-no-human-verification_GM835599320.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/free-real-credit-card-for-roblox_GM431946152.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/how-to-get-free-premium-roblox_GM431946152.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/20210-free-spin-links-for-coin-master_GM406889139.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/como-hackear-juego-coin-master_GM406889139.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/hack-robux_GM431946152.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/free-roblox-promocodes-that-stiil-work_GM431946152.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/minecraft-pocket-edition-download-free-pe-calculator_GM479516143.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/win-free-robux_GM431946152.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/free-robux-generator-com-roblox-hack_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
font_00_sfnt_off00003195.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3195 22348 bytes
SHA-256: 0ef1167239aeda33f836a1efbe12d994a98b583768a5dcec18f5c358678ac690
font_01_sfnt_off0000635d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x635D 19424 bytes
SHA-256: 0ce025e1e2142bf8e4bf4e95fb4d217cf26cb6655003ee6f77242acca206afac

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