Malicious PDF — malware analysis report

Static analysis result for SHA-256 d654a1a1c1f317bf…

MALICIOUS

PDF

54.1 KB Created: 2021-06-10 18:42:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 65f1194a71d14a2f9f3db711e1c27dd9 SHA-1: a6a949e5798da322583e248dcd6d8dda19a349f6 SHA-256: d654a1a1c1f317bfd424e557db6c40738ec06cf2c9bc6828ac760b6524e235a7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs that lead to known malicious redirectors, specifically promoting 'free generators' and 'game hacks' as a lure. The document body, though partially corrupted, also contains these URLs and references to game-related content. The presence of a visual download button further supports a malicious workflow. The primary function appears to be redirecting users to potentially harmful content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9636

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/how-to-get-a-free-key-in-room-escape-roblox-game-hack In PDF document text
    • http://ivanitskyvs.ru/images/how-to-get-minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • http://ivanitskyvs.ru/images/is-minecraft-free-on-xbox_GM479516143.pdfIn PDF document text
    • http://ivanitskyvs.ru/images/are-minecraft-realms-free_GM479516143.pdfIn PDF document text
    • http://ivanitskyvs.ru/images/app-master_GM406889139.pdfIn PDF document text
    • http://ivanitskyvs.ru/images/free-roblox-gear_GM431946152.pdfIn PDF document text
    • http://ivanitskyvs.ru/images/is-coin-master-free_GM406889139.pdfIn PDF document text
    • http://ivanitskyvs.ru/images/coin-master-daily-free-spins-link-facebook_GM406889139.pdfIn PDF document text
    • http://ivanitskyvs.ru/images/coin-master-free-cards-and-spin-link_GM406889139.pdfIn PDF document text
    • http://ivanitskyvs.ru/images/coin-master-free-spins-daily-2021_GM406889139.pdfIn PDF document text
    • http://ivanitskyvs.ru/images/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
    • http://ivanitskyvs.ru/images/freerubux_GM431946152.pdfIn PDF document text
    • http://ivanitskyvs.ru/images/robux-hack-me_GM431946152.pdfIn PDF document text
    • http://ivanitskyvs.ru/images/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • http://ivanitskyvs.ru/images/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://ivanitskyvs.ru/images/coin-master-freebies_GM406889139.pdfIn PDF document text
    • http://ivanitskyvs.ru/images/minecraft-online-free-no-download_GM479516143.pdfIn PDF document text
    • http://ivanitskyvs.ru/images/coin-master-lucky-patcher-hack_GM406889139.pdfIn PDF document text
    • http://ivanitskyvs.ru/images/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • http://ivanitskyvs.ru/images/roblox-bloxburg-free-to-play_GM431946152.pdfIn PDF document text
    • http://ivanitskyvs.ru/images/minecraft-free-download-linux_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004fbf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FBF 38740 bytes
SHA-256: 6ebd1890b184082f7e62b0611ed9e76ef382827e0b556d35e9717ad4e535b717
font_01_sfnt_off0000a4cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA4CC 2940 bytes
SHA-256: eb230542719c96b42e3fd8bb01e35f13ebd5f02629049da3a58e7fd7607bf48a
font_02_sfnt_off0000aedb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAEDB 19060 bytes
SHA-256: 1df8a7d51f5bb15ee182a3bf3c6421da21c8c95a43b0644f16528cdcd92da2b3

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