Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d2209eebad96477…

MALICIOUS

PDF

46.5 KB Created: 2021-06-08 16:04:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 6c1d7f19ab4c06bffd7843a1041fb2ac SHA-1: e0a2e76ccaf42eb9cfb9ab4b493afd4c010d9b32 SHA-256: 2d2209eebad964771eabc29f523c72e1a79555d5eb0ee45f74ea9981bcbf5eaa
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, identified as a link farm, pointing to websites offering game-related cheats and free items. The ML classifier strongly indicated maliciousness, and the presence of external URIs suggests a redirection to potentially harmful content. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing or scam attempt designed to drive traffic to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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/real-robux-hacks-game-hack PDF link annotation
    • http://unsere-beagles.de/images/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://unsere-beagles.de/images/is-roblox-free-on-ps4_GM431946152.pdfIn PDF document text
    • http://unsere-beagles.de/images/how-to-become-famous-on-tiktok-free_GM835599320.pdfIn PDF document text
    • http://unsere-beagles.de/images/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://unsere-beagles.de/images/coin-master-free-bonus_GM406889139.pdfIn PDF document text
    • http://unsere-beagles.de/images/how-to-get-minecraft-dungeons-for-free_GM479516143.pdfIn PDF document text
    • http://unsere-beagles.de/images/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://unsere-beagles.de/images/tiktok-free-2021-views_GM835599320.pdfIn PDF document text
    • http://unsere-beagles.de/images/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://unsere-beagles.de/images/bux-free-robux_GM431946152.pdfIn PDF document text
    • http://unsere-beagles.de/images/coin-master-game-free-play-online_GM406889139.pdfIn PDF document text
    • http://unsere-beagles.de/images/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://unsere-beagles.de/images/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://unsere-beagles.de/images/cheat-engine-64-roblox-windows-8_GM431946152.pdfIn PDF document text
    • http://unsere-beagles.de/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://unsere-beagles.de/images/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://unsere-beagles.de/images/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://unsere-beagles.de/images/how-to-get-more-robux_GM431946152.pdfIn PDF document text
    • http://unsere-beagles.de/images/viper-venom-roblox-hacks-sword-simulator_GM431946152.pdfIn PDF document text
    • http://unsere-beagles.de/images/get-free-likes-on-tiktok_GM835599320.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004d96.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D96 30820 bytes
SHA-256: 6d9d628982c8dd6cf1cb4a37c2ea29843d9e92ca5d135b11b1f62a8927671242
font_01_sfnt_off00009353.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9353 18320 bytes
SHA-256: 4c3c6af49361d600a232e5169bac9e03233acc6cafa5e21a576f3ffdf2602f7b

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