Malicious PDF — malware analysis report

Static analysis result for SHA-256 abf8ad2f8ac03f72…

MALICIOUS

PDF

33.9 KB Created: 2021-07-21 03:54:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: da9b83bb66dbcba18786c02a2834c621 SHA-1: e2a09500c032c4bb15cc3d952d911fcc95c8864e SHA-256: abf8ad2f8ac03f7252a68874e845b826f92e4bbc951f850cb420a36a91c40942
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a redirector URL, masquerading as a 'free generator' or 'game hack' to lure users. The ML classifier also flagged this PDF as malicious. The embedded links likely lead to further malicious content or phishing pages, indicating a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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/479516143/free-minecraft-account-and-password-game-hack In PDF document text
    • https://magistrinfo.ru/images/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://magistrinfo.ru/images/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • https://magistrinfo.ru/images/how-to-hack-a-minecraft-server_GM479516143.pdfIn PDF document text
    • https://magistrinfo.ru/images/minecraft-realms-free-codes_GM479516143.pdfIn PDF document text
    • https://magistrinfo.ru/images/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • https://magistrinfo.ru/images/minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • https://magistrinfo.ru/images/free-minecraft-alt-accounts_GM479516143.pdfIn PDF document text
    • https://magistrinfo.ru/images/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://magistrinfo.ru/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://magistrinfo.ru/images/free-robux-kid-friendly-no-human-verification_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_off00003014.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3014 22616 bytes
SHA-256: 04b5e2fe83a1ec3deb79ea6551e4bb39a20b2d62e72eaf36162befbe5d92be12
font_01_sfnt_off00006295.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6295 18344 bytes
SHA-256: 071cc331fbe0dfc1a6c0e7c1f1383f87707aabc4deba919dc9b38235f2b9b975

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