Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcfb5aefe5d96616…

MALICIOUS

PDF

53.4 KB Created: 2021-05-15 12:15:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 75b1d0a6bc6377d210bb7f5ca9916ad4 SHA-1: 57c864a39cfa489b94c4325ebc27768870102355 SHA-256: dcfb5aefe5d966165b6111859aa23af4c5ca38d7a28d600669f4dbabbc789ab5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs that lead to a malicious redirector, disguised as a 'free generator / game hack'. The document body and heuristics indicate a lure for free game items, likely to trick users into visiting malicious sites. No scripts were extracted, but the presence of multiple malicious links suggests a phishing or scamming attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9231

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/free-t-shirt-roblox-game-hack In PDF document text
    • https://www.cosmosdawn.net/images/minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/minecraft-toys-for-free_GM479516143.pdfIn PDF document text
    • http://cosmosdawn.net/images/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://cosmosdawn.net/images/unlimited-robux_GM431946152.pdfIn PDF document text
    • http://cosmosdawn.net/images/how-to-get-free-robux-without-download-apps-or-survey_GM431946152.pdfIn PDF document text
    • http://cosmosdawn.net/images/minecraft-free-unblocked_GM479516143.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • http://cosmosdawn.net/images/roblox-free-roblox_GM431946152.pdfIn PDF document text
    • http://cosmosdawn.net/images/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/how-to-sue-roblox_GM431946152.pdfIn PDF document text
    • http://cosmosdawn.net/images/apps-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
    • http://cosmosdawn.net/images/haktuts-coin-master-free-spin-link-today_GM406889139.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://cosmosdawn.net/images/coin-master-levels_GM406889139.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/minecraft-story-mode-free-download_GM479516143.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/how-to-get-minecraft-windows-10-for-free-with-java_GM479516143.pdfIn PDF document text
    • http://cosmosdawn.net/images/games-like-coin-master-for-free_GM406889139.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
font_00_sfnt_off00004b58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B58 37064 bytes
SHA-256: 335abb202089a72106c1eba6943e0e86b8b12f3cef4e8594a4290009eaea0b1a
font_01_sfnt_off00009ce1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CE1 7448 bytes
SHA-256: a76ff9b4805dcff342f7268a16e2e3c2ff2b31b96c381fe4deb6ceea777bce90
font_02_sfnt_off0000aec4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAEC4 18340 bytes
SHA-256: 2d05e254e9d88d662aa6e20ca1badb4d8e3c9bd921fc5d0ad34db7ef5b503ac5

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