Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff734ada2f5ed786…

MALICIOUS

PDF

36.1 KB Created: 2021-06-27 20:31:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 07902650b2cb55d8f3e4bc03cfdf5d43 SHA-1: e6ff8c447472ffd57caecc095f62ff6525949b21 SHA-256: ff734ada2f5ed7861e3ae3218cc6bdb7aaba9e239268afa8f36f6e12b7b0577c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs, with a primary redirector identified as malicious. The document body and heuristics indicate a lure for game hacks or generators, aiming to redirect users to potentially harmful content. The presence of a malicious redirector suggests an attempt to deliver a second-stage payload or phish for credentials.

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/hacks-para-roblox-phantom-forces-2021-game-hack In PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-generator_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/roblox-shirt-are-now-free_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-to-get-free-robux-legit-filmz_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/cheat-roblox-lumber-tycoon-2-terbang_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-hack-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-robux-gift-card-codes_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-robux-no-verification-no-download_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-promo-codes-roblox-august-2021_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/minecraft-story-mode-free_GM479516143.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-tik-tok-quiz_GM835599320.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/cheat-codes-for-skywars-roblox-list_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/150-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/roblox-parkour-hack-2021-script_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-free-spins-deutsch-download-ios-link_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/roblox-btools-hack-feb-2021_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/cheat-mine-simulateur-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
font_00_sfnt_off000031e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31E3 23088 bytes
SHA-256: 09cbbf26922d0e2f2a28c7181b5e0ff16e78e1952b530c300822ca9cc4fc9edc
font_01_sfnt_off000065d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65D8 19908 bytes
SHA-256: 452e5eba00ff872b998155fe4084e0f29c681bef2e9e95f90921212435d70e89

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