PDF malware analysis — malicious · cfa054aa5bd70b19

MALICIOUS

PDF

44.4 KB Created: 2021-05-20 01:33:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 76badbe0a263e4128df5f773de0695bf SHA-1: 5979b49d3bb63a4b6c02b2b991f574cb3715b77e SHA-256: cfa054aa5bd70b1998eef2da68aaf45625226bc4c71d142c3c6357a8cc616fef

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a lure for a "Pokemon Go Free Download Hack" and embeds a large number of external links, many of which point to other PDF files. This behavior is indicative of a link farm or a phishing attempt designed to redirect users to malicious content. 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/1094591345/pokemon-go-free-download-hack-game-hack
- http://aspiesretreat.org/images/free-stuff-on-roblox-2021_GM431946152.pdf
- http://aspiesretreat.org/images/rbx-hut_GM431946152.pdf
- http://aspiesretreat.org/images/minecraft-pe-apk-free-download_GM479516143.pdf
- http://aspiesretreat.org/images/free-robux-hack-2021_GM431946152.pdf
- http://aspiesretreat.org/images/coin-master-hack-for-ios_GM406889139.pdf
- http://aspiesretreat.org/images/robux-hack-no-human-verification_GM431946152.pdf
- http://aspiesretreat.org/images/how-to-hack-people-on-roblox_GM431946152.pdf
- http://aspiesretreat.org/images/roblox-free-robux-no-verification_GM431946152.pdf
- http://aspiesretreat.org/images/free-robux-without-doing-anything_GM431946152.pdf
- http://aspiesretreat.org/images/coin-master-free-2021-spin-link_GM406889139.pdf
- http://aspiesretreat.org/images/free-links-coin-master_GM406889139.pdf
- http://aspiesretreat.org/images/free-minecraft-mods-for-pc_GM479516143.pdf
- http://aspiesretreat.org/images/roblox-robux-generator-2021_GM431946152.pdf
- http://aspiesretreat.org/images/how-do-you-get-free-robux-without-paying_GM431946152.pdf
- http://aspiesretreat.org/images/como-hackear-coin-master-gratis_GM406889139.pdf
- http://aspiesretreat.org/images/how-do-you-get-free-roblox_GM431946152.pdf
- http://aspiesretreat.org/images/free-ways-to-get-robux_GM431946152.pdf
- http://aspiesretreat.org/images/synapse-roblox-free-download_GM431946152.pdf
- http://aspiesretreat.org/images/coin-master-hack-ios-download-2021_GM406889139.pdf
- http://aspiesretreat.org/images/free-coin-master-spin-app_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_off0000489f.bin` `ff08692d66ba45685fe401f11579b6751d1ec27f54bd7a2cf69447ad3163dc89`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x489F	24236 bytes
`font_01_sfnt_off00007ff8.bin` `601c50867a41b9362538ff18e5f9479a0f9badf698aaf1eb7e88469c11719db7`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7FF8	2920 bytes
`font_02_sfnt_off00008a11.bin` `2c005598d4adf17f31455e341085534baa452d2308518b5a4343ad052a908f95`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8A11	18648 bytes

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