Malicious PDF — malware analysis report

Static analysis result for SHA-256 19eef1892943c662…

MALICIOUS

PDF

33.7 KB Created: 2021-06-18 06:59:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: b2328e8a01634ee1f682077a27a10f3b SHA-1: 40be34e4f8a21d508c07a9849d0ba944db2cdaad SHA-256: 19eef1892943c662e41257b2bde82c9eb0003f759177880fc851bbeb78f4a03c
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links, many of which are structured as SEO-optimized PDF links pointing to sites offering game-related cheats and hacks. The presence of a "download button" heuristic and the ML classifier's high confidence score indicate a malicious intent to direct users to potentially harmful content. No scripts were extracted, but the document's structure and numerous external links suggest it functions as a lure for malware or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://netcdn.co/app/431946152/free-song-id-roblox-game-hack PDF link annotation
    • http://cablelinkcoms.com.au/images/minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • http://cablelinkcoms.com.au/images/como-tener-robux-gratis-hack_GM431946152.pdfIn PDF document text
    • http://cablelinkcoms.com.au/images/roblox-download-pc-free_GM431946152.pdfIn PDF document text
    • http://cablelinkcoms.com.au/images/coin-master-free-link-spin_GM406889139.pdfIn PDF document text
    • http://cablelinkcoms.com.au/images/coin-master-hack-without-human-verification-india_GM406889139.pdfIn PDF document text
    • http://cablelinkcoms.com.au/images/best-free-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • http://cablelinkcoms.com.au/images/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://cablelinkcoms.com.au/images/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • http://cablelinkcoms.com.au/images/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
    • http://cablelinkcoms.com.au/images/free-tiktok-fans-and-likes_GM835599320.pdfIn PDF document text
    • http://cablelinkcoms.com.au/images/free-car-glitch-in-roblox-vehicle-sim_GM431946152.pdfIn PDF document text
    • http://cablelinkcoms.com.au/images/minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • http://cablelinkcoms.com.au/images/can-you-get-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://cablelinkcoms.com.au/images/free-minecraft-gift-card_GM479516143.pdfIn PDF document text
    • http://cablelinkcoms.com.au/images/free-hair-roblox-boy_GM431946152.pdfIn PDF document text
    • http://cablelinkcoms.com.au/images/coin-master-server-hack_GM406889139.pdfIn PDF document text
    • http://cablelinkcoms.com.au/images/free-tiktok-likes-no-human-verification-or-downloading-apps_GM835599320.pdfIn PDF document text
    • http://cablelinkcoms.com.au/images/tiktok-follower-bot-free_GM835599320.pdfIn PDF document text
    • http://cablelinkcoms.com.au/images/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://cablelinkcoms.com.au/images/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E93 22144 bytes
SHA-256: 3ea3c8200c2bd542c387e23366d120dbe4bf0c8281c44fd3bbaf81b4af9722cb
font_01_sfnt_off00005fb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FB2 18640 bytes
SHA-256: b6f2ab69747352a0d85be36cbd0d592c8d08d70677c784ed63ebf485f9c69fa0

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