PDF malware analysis — malicious · dc323f16fa8ef2b4

MALICIOUS

PDF

42.7 KB Created: 2021-05-17 02:46:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27

MD5: 1126bc7da900987e70216afcce2bef6f SHA-1: 663425302805c3b2147b437cc5b1f997c3bed729 SHA-256: dc323f16fa8ef2b467ec3f92c41a8921d9ed4607094b9263fe8fab753beea92f

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains numerous embedded links, identified as a 'link farm', pointing to websites offering 'free Robux' or game cheats. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs suggests a phishing or malware distribution attempt. The document body, though partially corrupted, also contains similar lure text and URLs.

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/how-to-get-free-robux-in-2021-game-hack PDF link annotation
- http://lawnn.ru/images/roblox-speed-hack_GM431946152.pdfIn PDF document text
- http://lawnn.ru/images/how-to-play-minecraft-for-free-on-computer_GM479516143.pdfIn PDF document text
- http://lawnn.ru/images/wahoo-gaming-co-free-robux_GM431946152.pdfIn PDF document text
- http://lawnn.ru/images/coin-master-game-hunters-club_GM406889139.pdfIn PDF document text
- http://lawnn.ru/images/coin-master-admin-free-spins_GM406889139.pdfIn PDF document text
- http://lawnn.ru/images/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
- http://lawnn.ru/images/how-to-get-robux-fast_GM431946152.pdfIn PDF document text
- http://lawnn.ru/images/minecraft-pc-download-free-full-version_GM479516143.pdfIn PDF document text
- http://lawnn.ru/images/coin-master-hack-pc-download_GM406889139.pdfIn PDF document text
- http://lawnn.ru/images/robux-earning-sites_GM431946152.pdfIn PDF document text
- http://lawnn.ru/images/wurst-112-2_GM479516143.pdfIn PDF document text
- http://lawnn.ru/images/uprobuxcom-free-robux_GM431946152.pdfIn PDF document text
- http://lawnn.ru/images/hacked-roblox-game_GM431946152.pdfIn PDF document text
- http://lawnn.ru/images/coin-master-coins_GM406889139.pdfIn PDF document text
- http://lawnn.ru/images/coin-master-free-spins-2-5-2021_GM406889139.pdfIn PDF document text
- http://lawnn.ru/images/coin-master-hack-tool-v1-9_GM406889139.pdfIn PDF document text
- http://lawnn.ru/images/free-robux-no-verify_GM431946152.pdfIn PDF document text
- http://lawnn.ru/images/today-free-spin-coin-master_GM406889139.pdfIn PDF document text
- http://lawnn.ru/images/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
- http://lawnn.ru/images/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00004604.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4604	26808 bytes
SHA-256: `4015e6c0ff6ae2816a1be816f8fe44d94cc254a4713c121110fc9122ccd59acd`
`font_01_sfnt_off0000834b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x834B	18684 bytes
SHA-256: `824acc3fee39cc83a95b513dc81155ec57b17e0207e8ef2cc186232f9d88d4f0`

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