Malicious PDF — malware analysis report

Static analysis result for SHA-256 69a520cce9c0e85b…

MALICIOUS

PDF

41.6 KB Created: 2021-05-11 14:15:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 3c61146b361961047b93ce18eee94c19 SHA-1: 504d696595dc857905671b6461be1596c121712f SHA-256: 69a520cce9c0e85b01f3c439b379dc10a7867ffdad95c76855a8e84594164bbc
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs and a DOC BODY that references generators for popular games, suggesting a lure for phishing or malware. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, many of which point to similar game-related content, reinforcing the malicious intent. While no scripts were directly extracted, the PDF structure and embedded links are indicative of a malicious document designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/431946152/robloxfun-com-generator-game-hack
    • https://www.citrus-shop.cz/images/coin-master-free-spin-generator-without-human-verification_GM406889139.pdf
    • https://www.citrus-shop.cz/images/coin-master-daily-free-spins-link-haktuts_GM406889139.pdf
    • https://www.citrus-shop.cz/images/how-to-get-free-robux-no-human-verification_GM431946152.pdf
    • https://www.citrus-shop.cz/images/how-to-get-free-robux-without-paying_GM431946152.pdf
    • https://www.citrus-shop.cz/images/coin-master-free-spins-link-today-new-2021_GM406889139.pdf
    • https://www.citrus-shop.cz/images/free-robux-no-verification-or-survey-2021_GM431946152.pdf
    • https://www.citrus-shop.cz/images/roblox-report-hacker_GM431946152.pdf
    • https://www.citrus-shop.cz/images/coin-master-2021-free-spins-link-blogspot_GM406889139.pdf
    • https://www.citrus-shop.cz/images/20210-free-spin-links-for-coin-master_GM406889139.pdf
    • https://www.citrus-shop.cz/images/where-to-get-free-robux_GM431946152.pdf
    • https://www.citrus-shop.cz/images/all-coin-master-spin-link-and-free-download_GM406889139.pdf
    • https://www.citrus-shop.cz/images/free-robux-pin-codes_GM431946152.pdf
    • https://www.citrus-shop.cz/images/robux-for-surveys_GM431946152.pdf
    • https://www.citrus-shop.cz/images/how-to-get-free-robux-generator_GM431946152.pdf
    • https://www.citrus-shop.cz/images/minecraft-hacks-ps4_GM479516143.pdf
    • https://www.citrus-shop.cz/images/how-to-hack-mcpe-master-coins_GM406889139.pdf
    • https://www.citrus-shop.cz/images/roblox-builders-club-free_GM431946152.pdf
    • https://www.citrus-shop.cz/images/how-to-download-minecraft-for-free-ios_GM479516143.pdf
    • https://www.citrus-shop.cz/images/coin-master-gift-link-hack_GM406889139.pdf
    • https://www.citrus-shop.cz/images/unlimited-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004548.bin
c02472b907ddb42236e50068b40953ffbe8d5c7f24ec43a41eb351b35748c17f
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4548 25336 bytes
font_01_sfnt_off00007f47.bin
c214cdc5875b8c54705917548ad95da7f9ccbf3c1d69b6e52c4f4c9c63cb00fa
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F47 18516 bytes