Malicious PDF — malware analysis report

Static analysis result for SHA-256 f773b68f8af1d1f0…

MALICIOUS

PDF

47.0 KB Created: 2021-05-14 17:48:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f738a544c7c51f3734b770e27f11d16d SHA-1: b5fadd548d34009a8c8619a923a8d580dbc6eeca SHA-256: f773b68f8af1d1f084929b9deba21fad50559d80e6db2ae62ee42017f2bb3010
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to external websites, including one identified as a malicious redirector. The document body and heuristics suggest a lure for game-related cheats or generators, which is a common tactic for distributing malware. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent, likely leading to a further stage of infection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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/how-to-get-free-robux-codes-game-hack In PDF document text
    • http://ggmtc.net/userfiles/files/how-to-hack-golden-card-in-coin-master_GM406889139.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/how-to-get-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/robux-download_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/roblox-free-pants_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/hack-my-game-xyz-coin-master_GM406889139.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/wurst-115-2_GM479516143.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/roblox-pics_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/www-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/coin-master-hack-2021-apk_GM406889139.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/op-rewards-robux_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/coin-master-download_GM406889139.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/robux-sign_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/cool-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/free-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/easy-robux-today-com_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/is-minecraft-free-on-xbox-one_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_003_off0000494d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x494D 24996 bytes
SHA-256: dac314f41f75966dde8a63a26fa5a61a15f5a20eaad11789a97ba2f8b4be78df
font_01_sfnt_off000082b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82B2 7448 bytes
SHA-256: a76ff9b4805dcff342f7268a16e2e3c2ff2b31b96c381fe4deb6ceea777bce90
font_02_sfnt_off00009495.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9495 18456 bytes
SHA-256: 647704a1f8ac96c456e26df3796ee2ada4959e42324ca69004a5f2968b1e2bf7

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