PDF malware analysis — malicious · b13a315ac6816923

MALICIOUS

PDF

44.7 KB Created: 2021-05-14 15:42:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 8df5d5bca667257713f2a81f94ec34c3 SHA-1: 4462f21d66e008c5469a2c9cc9d8887efae28a1f SHA-256: b13a315ac68169236b0422b57e19251e9f552a1aef417d7a2fb7f8fa8e657ffa

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains a large number of external links, many of which are SEO-optimized and point to pages offering game cheats and 'free Robux'. The ML classifier strongly indicated maliciousness, and the presence of embedded URLs suggests a phishing or malware distribution attempt. No scripts were extracted, but the document's structure and embedded links are indicative of a lure to malicious content.

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 https://netcdn.xyz/app/431946152/roblox-promo-codes-free-robux-game-hack
- https://masseymotorcars.com/images/free-spin-online-tool-coin-master_GM406889139.pdf
- https://masseymotorcars.com/images/minecraft-ps4-free_GM479516143.pdf
- https://masseymotorcars.com/images/coinmaster-spin-ml-free_GM406889139.pdf
- https://masseymotorcars.com/images/get-free-robux-no-human-verification_GM431946152.pdf
- https://masseymotorcars.com/images/blogspot-coin-master-free-spins_GM406889139.pdf
- https://masseymotorcars.com/images/how-to-get-free-robux-hack_GM431946152.pdf
- https://masseymotorcars.com/images/como-hackear-coin-master-2021-espaol_GM406889139.pdf
- https://masseymotorcars.com/images/free-spins-coin-master-october-13-2021_GM406889139.pdf
- https://masseymotorcars.com/images/free-robux-codes-no-verification-2021_GM431946152.pdf
- https://masseymotorcars.com/images/free-robux-generator-com-roblox-hack_GM431946152.pdf
- https://masseymotorcars.com/images/free-spins-coin-master-hack-2021_GM406889139.pdf
- https://masseymotorcars.com/images/minecraft-free-minecoins_GM479516143.pdf
- https://masseymotorcars.com/images/coin-master-free-coins-link-2021-today_GM406889139.pdf
- https://masseymotorcars.com/images/coin-master-free_GM406889139.pdf
- https://masseymotorcars.com/images/how-to-hack-a-minecraft-server_GM479516143.pdf
- https://masseymotorcars.com/images/how-to-get-free-robux-without-email_GM431946152.pdf
- https://masseymotorcars.com/images/coin-master-free-download-for-pc_GM406889139.pdf
- https://masseymotorcars.com/images/https-oprewards-com-roblox_GM431946152.pdf
- https://masseymotorcars.com/images/coin-master-heaven-free-daily-spins_GM406889139.pdf
- https://masseymotorcars.com/images/is-roblox-studio-free_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_off00004b76.bin` `f70639ce80764e4ebf59f3aebd0d28681fd97e1bb21168f5066d287afd3f6edc`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4B76	28288 bytes
`font_01_sfnt_off00008ba4.bin` `3ed324e585500d41944ebd93500991c566830021fec9c5a8323b790459c3443f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8BA4	18676 bytes

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