Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ec0c665b456f98b…

MALICIOUS

PDF

45.0 KB Created: 2021-06-10 17:20:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 229af8cd6544c2d8a959abf60363473b SHA-1: 3044544207c5d44dd842d4fcea07c1cd70ca56eb SHA-256: 0ec0c665b456f98b8603b6074492ef17abceaa4183285093c92894b54ae7cbc6
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links to external websites, many of which are structured as SEO-optimized PDF links, suggesting a link farm. The document body and heuristics indicate a lure for game hacks and cheats, likely intended to lead users to download malicious files. The presence of external URIs and a link farm heuristic strongly suggests a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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 https://netcdn.tw/app/431946152/roblox-money-hack-mad-city-2021-game-hack PDF link annotation
    • http://repository.ummy.ac.id//repository/free-minecraft-shaders_GM479516143.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/robux-free-robux_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/coin-master-hack-mod-apk-download_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/coin-master-hacks-free-spins_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/how-to-have-a-madcity-roblox-hack_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/free-roblox-hacks-no-injector_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/coin-master-free-500-spins-link_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/coin-master-free-coins-app_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/free-robux-hack-by-justin-master_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/how-to-make-a-free-robux-website_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/free-spins-on-coin-master-generator_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/blox-pink-robux-free_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/best-free-roblox-games_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/free-roblox-account-with-pin_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/free-coin-and-spin-link_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/free-100-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

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
stream_004_off000051a6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51A6 24556 bytes
SHA-256: 1d690c9c9dc8bc24df0a956808512d55f22ce9f553a29d6b542e5d7d5a8db6bb
font_01_sfnt_off000089de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89DE 19360 bytes
SHA-256: 9486004b29ae618f06f273da9840e93e809f0bcd6b551c7a6f243b722a314d15

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