Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f2dd97fb80c05ff…

MALICIOUS

PDF

35.3 KB Created: 2021-07-05 14:46:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: abced39b09dc3005ae06cfaa680aa564 SHA-1: c88fa66cb9c96b09c7d398c9aa2e09790069a40f SHA-256: 8f2dd97fb80c05ffb8d206f26b2dd3ff6bcc6ce9f3f1c6ef5c8f372961dcabc8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs, with a primary link to a 'game hack' generator. This heuristic, combined with the ML classifier, strongly suggests a malicious intent to lure users to potentially harmful content. The document body and embedded URLs indicate a social engineering tactic using game-related lures to redirect users to malicious sites.

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-free-spins-hacktman-game-hack In PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-online-play-hacked-infinite-robux_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-ultimate-driving-hack_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/do-you-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-latest-version-hack_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-generator-hack_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/hack-coin-master-apk-33_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/freegames911com-coinmastertipsandcheats2021freecoinsandspins_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/beast-mode-roblox-free_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-adidas-shirt-in-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/get-free-robux-the-real-way_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/plug-toolbox-for-minecraft-free-ios_GM479516143.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-robux-group_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-spins-coin-master-cheats_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/comment-hacker-roblox-android_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-god-mode-script-cheat-engine_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-badges-roblox-game_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-hack-ad_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_off0000335a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x335A 22808 bytes
SHA-256: 27610155b84a510729d5238ea54a069122a92c29e38dc9386c5e7fdaeb2dbbfc
font_01_sfnt_off00006685.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6685 18604 bytes
SHA-256: 4bdfeca594628802d69067d6b2f20385009c2d8f96afc7f272a39be84923808b

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