Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcc19a9b21b09512…

MALICIOUS

PDF

42.1 KB Created: 2021-05-16 02:48:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 56d84f396fe93e50e2fc9c45605d4469 SHA-1: 78d933feb1e1f5ce6184c4f32cfafed7b37a4a5d SHA-256: bcc19a9b21b09512474dc65a52fc991aa4f1a93a3eb21dbf50105137e9d8714a
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous embedded URLs that are part of a link farm, all pointing to websites offering game hacks and free in-game currency. The ML classifier strongly indicated maliciousness, and the presence of a visual download button further supports a deceptive lure. The primary attack pattern involves tricking users into visiting these malicious links, likely to download malware or engage in scams.

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/406889139/smart-lodhi-coin-master-hack-game-hack
    • http://moto98.com/images/free-coin-master-spins-link_GM406889139.pdf
    • http://moto98.com/images/working-coin-master-hack_GM406889139.pdf
    • http://moto98.com/images/free-free-robux_GM431946152.pdf
    • http://moto98.com/images/minecraft-modded-client_GM479516143.pdf
    • http://moto98.com/images/a-lot-of-robux_GM431946152.pdf
    • http://moto98.com/images/free-spin-and-coin-blogspot-com_GM406889139.pdf
    • http://moto98.com/images/how-do-you-get-free-robux-on-roblox_GM431946152.pdf
    • http://moto98.com/images/coin-master-daily-free-spins-link-facebook_GM406889139.pdf
    • http://moto98.com/images/free-spin-coin-master-2021-link_GM406889139.pdf
    • http://moto98.com/images/coin-master-hack-apk-link_GM406889139.pdf
    • http://moto98.com/images/coin-master-unlimited-spin-link_GM406889139.pdf
    • http://moto98.com/images/free-coin-master-spins-blogger_GM406889139.pdf
    • http://moto98.com/images/how-to-get-free-food-on-coin-master_GM406889139.pdf
    • http://moto98.com/images/can-i-download-minecraft-for-free_GM479516143.pdf
    • http://moto98.com/images/free-robux-codes-generator-no-verification_GM431946152.pdf
    • http://moto98.com/images/minecraft-bedrock-hacks-windows-10_GM479516143.pdf
    • http://moto98.com/images/how-to-hack-minecraft-pe_GM479516143.pdf
    • http://moto98.com/images/coin-master-2021-free-spins-link-today_GM406889139.pdf
    • http://moto98.com/images/coin-master-game-free-spin-download_GM406889139.pdf
    • http://moto98.com/images/free-robux-generator-no-verification-2021_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000494d.bin
78e5e3ffff50f523543488d049fce6f272cf3f49937b553dd2213d20782c93fe		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x494D 24808 bytes
font_01_sfnt_off00008224.bin
a05114009afcd09b57a1cbd8077165af15d86336b6d5abd27516af736212cac5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8224 18316 bytes

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