Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb5b1c55159bf8c8…

MALICIOUS

PDF

52.1 KB Created: 2021-05-13 06:55:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7bcdd9d5f3a9152ff670b80cf7e610a8 SHA-1: be59e80409e4842b38a764d8f8275daba1a96c38 SHA-256: eb5b1c55159bf8c81ff880efbb1499d328a41cbfda9e5a433c225e2a1f559df8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirectors and sites offering 'game hacks' and 'free currency', strongly suggesting a lure for scams or malware. The ML classifier also flagged this PDF as malicious. While no scripts were directly extracted, the embedded URLs are the primary indicators of malicious intent, likely leading to a phishing or malware download site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8646

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/479516143/minecraft-free-ios-2021-game-hack In PDF document text
    • http://www.comitatoiseo.org/images/coin-master-free-spins-2021-blogspot_GM406889139.pdfIn PDF document text
    • http://www.comitatoiseo.org/images/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.comitatoiseo.org/images/free-spin-links-coin-master-october-30-2021_GM406889139.pdfIn PDF document text
    • http://www.comitatoiseo.org/images/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://www.comitatoiseo.org/images/pig-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://www.comitatoiseo.org/images/how-to-get-minecoins-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.comitatoiseo.org/images/coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • http://www.comitatoiseo.org/images/coin-master-hack-xyz-download-free_GM406889139.pdfIn PDF document text
    • http://www.comitatoiseo.org/images/free-spins-coin-master-october-13-2021_GM406889139.pdfIn PDF document text
    • http://www.comitatoiseo.org/images/coin-master-card-collection-hack_GM406889139.pdfIn PDF document text
    • http://www.comitatoiseo.org/images/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.comitatoiseo.org/images/get-free-spins-coin-master-october-2021_GM406889139.pdfIn PDF document text
    • http://www.comitatoiseo.org/images/hack-coin-master-free_GM406889139.pdfIn PDF document text
    • http://www.comitatoiseo.org/images/how-to-get-free-robux-fast_GM431946152.pdfIn PDF document text
    • http://www.comitatoiseo.org/images/free-diamonds-coin-master_GM406889139.pdfIn PDF document text
    • http://www.comitatoiseo.org/images/free-minecraft-bedrock-server-hosting_GM479516143.pdfIn PDF document text
    • http://www.comitatoiseo.org/images/robux-page_GM431946152.pdfIn PDF document text
    • http://www.comitatoiseo.org/images/levvvel-coin-master_GM406889139.pdfIn PDF document text
    • http://www.comitatoiseo.org/images/fb-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.comitatoiseo.org/images/online-coin-master-free-spin-app_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004846.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4846 25020 bytes
SHA-256: 9016fbe43d324f7f39b534bdf84f3a4dff5e313cdcc80c223b7253c9ce437e68
font_01_sfnt_off00008239.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8239 7936 bytes
SHA-256: 218d53b68bdddb064f6fba4be822d5b3725ed1cef1a3b42796a8dd99c4a62f4e
font_02_sfnt_off00009b62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B62 4232 bytes
SHA-256: ab6320ab342704d2c5943abfba82ed4837bf2da871c91621741fd4cfd15c6ed5
font_03_sfnt_off0000a9ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA9EE 18112 bytes
SHA-256: b55c1404a277e69c847ae3cf6ace6563469f03eb0031cfae1db94f462975a683

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