PDF malware analysis — malicious · 7337d79bbdf35452

MALICIOUS

PDF

41.0 KB Created: 2021-05-13 12:01:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: a2357b750bf6eed00b27b4ac4e1591e1 SHA-1: 77a31795f0ef252b4ed78aeade6f8d091925dbd7 SHA-256: 7337d79bbdf3545278a83d6c6bb69153a5105601bc944f261a8054cfbf9cb9f5

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of external links, identified as a link farm, suggesting a deceptive purpose. The document body and embedded links point towards lures for free in-game currency or items, which is a common tactic for phishing or malware distribution. The ML classifier also strongly indicated maliciousness.

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/free-money-links-coin-master-game-hack
- https://omhelsjehart.nu/images/how-to-get-free-robux-easy-hack_GM431946152.pdf
- https://omhelsjehart.nu/images/free-robux-website_GM431946152.pdf
- https://omhelsjehart.nu/images/free-spins-coin-master_GM406889139.pdf
- https://omhelsjehart.nu/images/free-roblox-promo-codes-for-robux_GM431946152.pdf
- https://omhelsjehart.nu/images/hack-card-collection-coin-master_GM406889139.pdf
- https://omhelsjehart.nu/images/how-to-get-free-robux-2021-easy_GM431946152.pdf
- https://omhelsjehart.nu/images/minecraft-bedrock-free_GM479516143.pdf
- https://omhelsjehart.nu/images/how-to-earn-robux-for-free-2021_GM431946152.pdf
- https://omhelsjehart.nu/images/free-robux-only-username-no-human-verification_GM431946152.pdf
- https://omhelsjehart.nu/images/se-puede-hackear-coin-master_GM406889139.pdf
- https://omhelsjehart.nu/images/daily-free-spins-on-coin-master_GM406889139.pdf
- https://omhelsjehart.nu/images/master-coin-hack-app_GM406889139.pdf
- https://omhelsjehart.nu/images/rbxcity-free-robux_GM431946152.pdf
- https://omhelsjehart.nu/images/coin-master-hack-pc-cheat-engine_GM406889139.pdf
- https://omhelsjehart.nu/images/robux-hacks-2021_GM431946152.pdf
- https://omhelsjehart.nu/images/minecraft-free-no-download_GM479516143.pdf
- https://omhelsjehart.nu/images/free-minecraft-realms-to-join_GM479516143.pdf
- https://omhelsjehart.nu/images/minecraft-pe-017-0-apk-free-download-android_GM479516143.pdf
- https://omhelsjehart.nu/images/how-to-get-roblox-premium-for-free_GM431946152.pdf
- https://omhelsjehart.nu/images/hack-coin-master-online-without-human-verification_GM406889139.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_off0000473e.bin` `64af1f9c6cecd30253ab3c254efbd9931cbfca090185b7d7ff2d0686c2657177`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x473E	25120 bytes
`font_01_sfnt_off00007e78.bin` `21a754cd3574cb6c7a71d18422cf3ecba321ae18705df6ac97d40721e73d98df`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7E78	18060 bytes

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