Malicious PDF — malware analysis report

Static analysis result for SHA-256 c337865f79a28f58…

MALICIOUS

PDF

44.3 KB Created: 2021-05-16 12:12:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1981213a5ba2c1e4eda43f9f4be77a33 SHA-1: ebd308a821a0b5c004c9e1c70525e99fb3c28f83 SHA-256: c337865f79a28f58c33a80689ad936bc368e19e921010e9d3d49a03bc599d8d2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that are identified as malicious redirectors, specifically targeting users with lures related to game hacks and generators. The document body, though heavily obfuscated, contains references to these lures and embedded URLs. The presence of these malicious links and the ML classifier's high confidence score indicate a clear intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9551

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/406889139/coin-master-game-free-spin-game-hack In PDF document text
    • http://cablelinkcoms.com.au/images/free-minecraft-printables_GM479516143.pdfIn PDF document text
    • http://cablelinkcoms.com.au/images/hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://cablelinkcoms.com.au/images/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://cablelinkcoms.com.au/images/easiest-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://cablelinkcoms.com.au/images/hack-coin-master-xyz_GM406889139.pdfIn PDF document text
    • http://cablelinkcoms.com.au/images/coinmaster_GM406889139.pdfIn PDF document text
    • http://cablelinkcoms.com.au/images/coin-master-mod-apk-latest-version-free-download_GM406889139.pdfIn PDF document text
    • http://cablelinkcoms.com.au/images/roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://cablelinkcoms.com.au/images/coin-master-free-food-for-pet_GM406889139.pdfIn PDF document text
    • http://cablelinkcoms.com.au/images/robux-rewards_GM431946152.pdfIn PDF document text
    • http://cablelinkcoms.com.au/images/free-minecraft-gift-card_GM479516143.pdfIn PDF document text
    • http://cablelinkcoms.com.au/images/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://cablelinkcoms.com.au/images/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://cablelinkcoms.com.au/images/roblox-promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://cablelinkcoms.com.au/images/free-private-minecraft-server_GM479516143.pdfIn PDF document text
    • http://cablelinkcoms.com.au/images/coin-master-free-stuff-links_GM406889139.pdfIn PDF document text
    • http://cablelinkcoms.com.au/images/minecraft-apk-download-free-11-055_GM479516143.pdfIn PDF document text
    • http://cablelinkcoms.com.au/images/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://cablelinkcoms.com.au/images/free-minecraft-worlds_GM479516143.pdfIn PDF document text
    • http://cablelinkcoms.com.au/images/coin-master-free-spin-trick_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
stream_003_off000047ea.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47EA 25116 bytes
SHA-256: 6df06b51cb93e57a7ff75ff268c3b2fdf5931a2f4db3fd42117095bfd67b6341
font_01_sfnt_off00008105.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8105 2916 bytes
SHA-256: edf837a652ad2e565e725c6192e58cf4ef8e5ad79b40c0fc75b3472c61dc6c06
font_02_sfnt_off00008b1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B1D 18148 bytes
SHA-256: 504bf69ab615d46cf168ba32f934bf745dfb0b3d16564297e15ae7f7ea829546

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