PDF malware analysis — malicious · 5dc0e853426f7bc9

MALICIOUS

PDF

33.3 KB Created: 2021-07-09 14:28:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 203c6def651865a0cd85bd23270a1dac SHA-1: aca329daf31e20d1af9c282f9ff001acee5d7003 SHA-256: 5dc0e853426f7bc9629fce228f0c4fc361e41e38b919f8e5dfe3ea143f88b505

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a large number of external links, many of which are SEO-optimized and point to sites offering free in-game currency or hacks. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous external links suggests a phishing or malware distribution attempt. The document body itself contains references to these lures and embedded URLs.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/coin-master-free-gold-cards-link-game-hack
- http://fobh.net/userfiles/files/free-robux-com-2021_GM431946152.pdf
- http://fobh.net/userfiles/files/how-to-hack-coin-master-computer_GM406889139.pdf
- http://fobh.net/userfiles/files/free-robux-no-human-verification-no-survey_GM431946152.pdf
- http://fobh.net/userfiles/files/how-to-play-minecraft-for-free-on-computer_GM479516143.pdf
- http://fobh.net/userfiles/files/coin-master-daily-spin-free_GM406889139.pdf
- http://fobh.net/userfiles/files/free-robux-without-verify_GM431946152.pdf
- http://fobh.net/userfiles/files/robux-free-gift-card-org-hack_GM431946152.pdf
- http://fobh.net/userfiles/files/robux-redeem_GM431946152.pdf
- http://fobh.net/userfiles/files/spin-rewards-coin-master_GM406889139.pdf
- http://fobh.net/userfiles/files/roblox-inappropriate_GM431946152.pdf
- http://fobh.net/userfiles/files/free-robux-kid-friendly-no-human-verification_GM431946152.pdf
- http://fobh.net/userfiles/files/free-robux-for-kids_GM431946152.pdf
- http://fobh.net/userfiles/files/free-roblox-gift-card-codes-no-survey-or-human-verification_GM431946152.pdf
- http://fobh.net/userfiles/files/how-to-hack-into-the-big-brother-house-roblox_GM431946152.pdf
- http://fobh.net/userfiles/files/how-to-hack-roblox-games_GM431946152.pdf
- http://fobh.net/userfiles/files/coin-master-cheats-free-spins_GM406889139.pdf
- http://fobh.net/userfiles/files/coin-master-free-spin-ml_GM406889139.pdf
- http://fobh.net/userfiles/files/roblox-free-clothes-codes_GM431946152.pdf
- http://fobh.net/userfiles/files/how-to-get-free-stuff-on-roblox-2021_GM431946152.pdf
- http://fobh.net/userfiles/files/how-do-you-get-free-roblox_GM431946152.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00002f34.bin` `026d487d5978f2d9db4f5d25fd328da13c0622c247cbddaf2099e91f7d8e6d27`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2F34	21832 bytes
`font_01_sfnt_off00005f1f.bin` `89113b1104d7a8f0ec89d4a785a1cf441d54076bb8a1f1cdfa29711bc1c2c75d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5F1F	18416 bytes

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