PDF malware analysis — malicious · c2f36d730931229e

MALICIOUS

PDF

44.5 KB Created: 2021-05-13 23:00:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: a353c2616ed052cb49f17588651a83aa SHA-1: b8b0aee45eb2b5c7fb0b6387b47372e43eb71383 SHA-256: c2f36d730931229e098936ccb10b590ac1a9f413ee9272e2b46bcef09499ec51

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous links to external websites, many of which are related to game cheats and hacks, suggesting a lure for users to download potentially malicious files. The presence of a 'download button' heuristic further supports this. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

Nyx PDF Classifier malicious score 0.9632

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/479516143/minecraft-classic-free-game-hack
- https://www.acacss.com/images/coin-master-daily-free-spins-2021_GM406889139.pdf
- https://www.acacss.com/images/how-to-get-free-robux-hack-2021_GM431946152.pdf
- https://www.acacss.com/images/free-game-pack-with-google-play-coin-master_GM406889139.pdf
- https://www.acacss.com/images/free-robux-survey_GM431946152.pdf
- https://www.acacss.com/images/robux-com-roblox_GM431946152.pdf
- https://www.acacss.com/images/coin-master-free-spins-link-today-new_GM406889139.pdf
- https://www.acacss.com/images/freegames911com-coinmastertipsandcheats2021freecoinsandspins_GM406889139.pdf
- https://www.acacss.com/images/get-free-cards-coin-master_GM406889139.pdf
- https://www.acacss.com/images/coin-master-mod-apk-unlimited-spin-download-free-full-version_GM406889139.pdf
- https://www.acacss.com/images/coin-master-spin-cheat_GM406889139.pdf
- https://www.acacss.com/images/uprobuxcom-free-robux_GM431946152.pdf
- https://www.acacss.com/images/coin-master-free-spins-link-2021-blogger_GM406889139.pdf
- https://www.acacss.com/images/coin-master-free-spin-link-today-download_GM406889139.pdf
- https://www.acacss.com/images/coin-master-free-coins-link-blogspot_GM406889139.pdf
- https://www.acacss.com/images/minecraft-pocket-edition-free-apk_GM479516143.pdf
- https://www.acacss.com/images/easy-robux_GM431946152.pdf
- https://www.acacss.com/images/free-coin-link-coin-master_GM406889139.pdf
- https://www.acacss.com/images/how-to-get-free-robux-easy_GM431946152.pdf
- https://www.acacss.com/images/free-robux-no-human-verification-generator_GM431946152.pdf
- https://www.acacss.com/images/coin-master-firebird-card-free_GM406889139.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00004a69.bin` `cef37e8ac7da622908993ec555bf7737b87c2888299c62b8bd7fa5b02c9f753b`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4A69	25252 bytes
`font_01_sfnt_off0000838d.bin` `c2578a292634a901613c1dd9f9883dd4930e6811e59ae03d696f263e56ea17b4`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x838D	2892 bytes
`font_02_sfnt_off00008d76.bin` `1ee95ff2a7de50dda93d1224861f64f53bfa9b684d20bd49bdd14d4804095e27`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8D76	17644 bytes

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