PDF malware analysis — malicious · 1f2a48187e879e91

MALICIOUS

PDF

40.4 KB Created: 2021-05-16 16:46:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 6308c67abcca0919a4eb2726f9003b91 SHA-1: 86d6545f44cb028b25df7f59a8d223b5f50a3763 SHA-256: 1f2a48187e879e91d4f9272aa415a9b4b295fa0c3d83200eb68df09e35fce471

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous links to external websites, many of which appear to be part of a link farm designed to host game hack or reward-related content. The ML classifier strongly flagged this PDF as malicious, and the presence of a "download button" heuristic further supports a malicious intent to trick users into downloading unwanted applications. The primary IOC is the external URL used for the apparent download.

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/coin-master-free-spain-game-hack
- http://make-up-stettler.ch/images/coin-master-spin-hack-apk_GM406889139.pdf
- http://make-up-stettler.ch/images/rewardrobux-com_GM431946152.pdf
- http://make-up-stettler.ch/images/how-do-you-get-free-robux-on-roblox_GM431946152.pdf
- http://make-up-stettler.ch/images/coin-master-free-spins-hack_GM406889139.pdf
- http://make-up-stettler.ch/images/daily-free-spins-on-coin-master_GM406889139.pdf
- http://make-up-stettler.ch/images/coin-master-mod-apk-latest-hack-with-unlimited-free-spins_GM406889139.pdf
- http://make-up-stettler.ch/images/coin-master-hack-lost-world-2021-com_GM406889139.pdf
- http://make-up-stettler.ch/images/free-robux-without-offers_GM431946152.pdf
- http://make-up-stettler.ch/images/how-to-get-free-robux_GM431946152.pdf
- http://make-up-stettler.ch/images/free-robux-2021_GM431946152.pdf
- http://make-up-stettler.ch/images/free-pet-treats-coin-master_GM406889139.pdf
- http://make-up-stettler.ch/images/how-to-get-free-items-on-roblox_GM431946152.pdf
- http://make-up-stettler.ch/images/coin-master-free-pet-food_GM406889139.pdf
- http://make-up-stettler.ch/images/getrobux-now_GM431946152.pdf
- http://make-up-stettler.ch/images/free-google-play-promo-codes-coin-master_GM406889139.pdf
- http://make-up-stettler.ch/images/free-robux-with-no-human-verification_GM431946152.pdf
- http://make-up-stettler.ch/images/coin-master-tiradas-gratis-link_GM406889139.pdf
- http://make-up-stettler.ch/images/free-robux-live_GM431946152.pdf
- http://make-up-stettler.ch/images/coin-master-spins-hack-iphone_GM406889139.pdf
- http://make-up-stettler.ch/images/free-robux-human-verification_GM431946152.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00004627.bin` `e02060bed22b8e9e277141815cc0ed2a783f1eb974bb5b83557dec954d2b89c5`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4627	24160 bytes
`font_01_sfnt_off00007c88.bin` `7b855ef2bb944b5b370c61480927ccad63ff31bdbf820bc1f0da9d35a10f5fb2`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7C88	17884 bytes

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