Malicious PDF — malware analysis report

Static analysis result for SHA-256 68b5b8e8773b7d5d…

MALICIOUS

PDF

41.3 KB Created: 2021-05-14 15:49:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9e7da6c35d490fd2f63e19849cc58642 SHA-1: 128a9c83cdd8c5f8436577edf9352690c591048a SHA-256: 68b5b8e8773b7d5d188771c2e1a7a76887552ab117362c2f91fca7fa1ee55676
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs, including one pointing to a suspicious domain associated with game hacks, and a heuristic firing indicates a visual download button lure. The ML classifier strongly flagged this PDF as malicious, suggesting it is designed to trick users into downloading malware. No scripts were extracted, but the presence of external links and the ML detection point towards a downloader or exploit delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/431946152/robux-free-c-game-hack In PDF document text
    • https://i-photo7.com/image/data/files/how-to-make-a-server-in-minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/roblox-apk-hack_GM431946152.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/minecraft-classic-free_GM479516143.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/coin-master-website_GM406889139.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/fighting-free-card-coin-master_GM406889139.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/www-coin-master-hack-com_GM406889139.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/robux-com-free_GM431946152.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/easypoints-gg-roblox_GM431946152.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/how-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/free-400-spins-coins-master_GM406889139.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/coin-master-cheat-codes_GM406889139.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/coin-master-links-for-today_GM406889139.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/how-to-get-free-coins-and-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/oprewards-robux_GM431946152.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/coin-master-free-spins-link-ios_GM406889139.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
stream_003_off000047e7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47E7 24508 bytes
SHA-256: 6cf520f4fb78472aadcf8bb4e2a6fc228ffc494b3a16f25ec1281298cbfe8334
font_01_sfnt_off00007fa0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FA0 18012 bytes
SHA-256: 3f1ded8a9c51e4f0f41c660fd84d3573ebe8f92a83837bcaa523a9614d650e73

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