PDF malware analysis — malicious · 9741a4fc2846f12f

MALICIOUS

PDF

42.9 KB Created: 2021-05-17 15:39:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: fe5e46bb05b4e9d875fd6092a673382a SHA-1: 351e30850449fa8e30de2fd864250cef733bb829 SHA-256: 9741a4fc2846f12f21b88e1a59ccce9d217d2f3654ff84092e855625b6945d31

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 structured as SEO-optimized URLs, suggesting a link farm or SEO spam campaign. The document body, though partially corrupted, contains references to 'Free Robux' and includes URLs that likely lead to scam or malicious content. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous external URIs supports a malicious intent.

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/free-robux-sites-that-work-game-hack
- https://www.flexcable.com/images/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdf
- https://www.flexcable.com/images/free-robux-mobile_GM431946152.pdf
- https://www.flexcable.com/images/free-spin-coin-master-instagram_GM406889139.pdf
- https://www.flexcable.com/images/coin-master-free-cards-link-2021_GM406889139.pdf
- https://www.flexcable.com/images/minecraft-packs-free_GM479516143.pdf
- https://www.flexcable.com/images/static-moonactive-net-link_GM406889139.pdf
- https://www.flexcable.com/images/free-spin-coin-master-link-2021_GM406889139.pdf
- https://www.flexcable.com/images/coin-master-free-coins-amp_GM406889139.pdf
- https://www.flexcable.com/images/coin-master-hack-no-survey-or-verification_GM406889139.pdf
- https://www.flexcable.com/images/best-way-to-get-free-robux_GM431946152.pdf
- https://www.flexcable.com/images/coin-master-spin-hack-link_GM406889139.pdf
- https://www.flexcable.com/images/how-to-hack-roblox-accounts-passwords_GM431946152.pdf
- https://www.flexcable.com/images/free-robux-generator-for-kids_GM431946152.pdf
- https://www.flexcable.com/images/free-roblox-items-codes_GM431946152.pdf
- https://www.flexcable.com/images/i-got-hacked-on-roblox_GM431946152.pdf
- https://www.flexcable.com/images/rewardrobux-com_GM431946152.pdf
- https://www.flexcable.com/images/mcpe-master-hack-unlimited-coins-latest-version_GM406889139.pdf
- https://www.flexcable.com/images/free-coin-master-game_GM406889139.pdf
- https://www.flexcable.com/images/free-roblox-accounts-2021-with-robux_GM431946152.pdf
- https://www.flexcable.com/images/real-free-robux-codes_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_off000049e3.bin` `3a333e30f5de77b67a1bdb26cb1ffd7921c2cf1f83ae27a1010ada5d0c9423a4`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x49E3	24828 bytes
`font_01_sfnt_off00008320.bin` `c0bc6bb0706fab35ff455fc4816471a1ab7f6ae4486f691ef98043b3efa3f18d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8320	19000 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.