PDF malware analysis — malicious · fc557c8f98d07a0c

MALICIOUS

PDF

48.2 KB Created: 2021-06-03 11:18:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: ad083b4790e516d94c96eb11143a2ee1 SHA-1: 6b18b34484406ddfd25b98afd373bce507f8c73d SHA-256: fc557c8f98d07a0c01393c09adb03d4f65847815869cc5a84f7341b06ebb5f1f

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many of which are related to game hacks and free in-game currency, indicating a link farm or phishing attempt. The presence of embedded URLs and the ML classifier's high confidence score suggest malicious intent. Although no scripts were explicitly 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 0.9796

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.online/app/431946152/how-do-you-hack-roblox-game-hack
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-easy-2021_GM431946152.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/coin-master-free-cards-link-2021_GM406889139.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/mcpe-master-hack-unlimited-coins-download_GM406889139.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/mcpe-master-hack-coin-apk_GM406889139.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/free-coins-and-spins-link-for-coin-master_GM406889139.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/free-limiteds-roblox_GM431946152.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/free-robux-that-actually-works-2021_GM431946152.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/get-free-robux-without-doing-anything_GM431946152.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/roblox-games-with-free-boombox_GM431946152.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/free-robux-without-verification_GM431946152.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/free-things-on-roblox_GM431946152.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/what-are-points-for-in-roblox_GM431946152.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/50-free-tiktok-likes-trial_GM835599320.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/coin-master-attack-hack_GM406889139.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/coin-master-hack-https-coinms-net_GM406889139.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/free-spin-coin-master-link-download_GM406889139.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/free-robux-generator-no-human-verification-2021_GM431946152.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/minecraft-noob-vs-pro-vs-hacker-vs-god_GM479516143.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/tiktok-minecraft-hacks_GM479516143.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off00005130.bin` `b38b9382599210555e1aa243e2a12629a45af79b44ecfd8bb4cfd04f914815c5`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5130	25188 bytes
`font_01_sfnt_off00008b45.bin` `40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8B45	3884 bytes
`font_02_sfnt_off000097ed.bin` `d27b94fe1a8c05d6feb56d9a091a96145976f0feb7173cb46f16c8470fe3a7d8`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x97ED	18816 bytes

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