PDF malware analysis — malicious · 37c9e9b906b3dc0f

MALICIOUS

PDF

46.2 KB Created: 2021-06-09 12:42:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 3f13e32785398ecba780703e2fba69ce SHA-1: 9d932961e3bddd8e3e5bbafe026008abe9a3c30f SHA-256: 37c9e9b906b3dc0f939da80539e412ab76ff97e22b6bb130510a67ca7be99559

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links, identified as a link farm, that point to websites offering game cheats and hacks. The ML classifier strongly indicated maliciousness, and the presence of external URIs suggests a phishing or malware distribution attempt. The document body, though partially corrupted, contains keywords related to 'Robux' and 'game hack', reinforcing the lure.

Machine Learning

Nyx PDF Classifier malicious score 0.9832

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.tw/app/431946152/ways-to-get-free-robux-2021-game-hack
- http://lib.stie-aub.ac.id/repository/how-to-get-robux-for-free-2021_GM431946152.pdf
- http://lib.stie-aub.ac.id/repository/hack-my-game-xyz-coin-master_GM406889139.pdf
- http://lib.stie-aub.ac.id/repository/roblox-hack-generator_GM431946152.pdf
- http://lib.stie-aub.ac.id/repository/coin-master-free-spins-link-blogspot_GM406889139.pdf
- http://lib.stie-aub.ac.id/repository/free-spins-coin-master-hack-2021_GM406889139.pdf
- http://lib.stie-aub.ac.id/repository/free-coins-app-for-coin-master_GM406889139.pdf
- http://lib.stie-aub.ac.id/repository/how-to-get-minecraft-windows-10-for-free-with-java_GM479516143.pdf
- http://lib.stie-aub.ac.id/repository/rape-simulator_GM431946152.pdf
- http://lib.stie-aub.ac.id/repository/mcpe-free-download_GM479516143.pdf
- http://lib.stie-aub.ac.id/repository/aristois-minecraft-hack_GM479516143.pdf
- http://lib.stie-aub.ac.id/repository/how-to-get-free-robux-easy-no-download_GM431946152.pdf
- http://lib.stie-aub.ac.id/repository/coin-master-free-spins-1-coin-master_GM406889139.pdf
- http://lib.stie-aub.ac.id/repository/how-many-levels-are-there-in-coin-master_GM406889139.pdf
- http://lib.stie-aub.ac.id/repository/free-robux-now_GM431946152.pdf
- http://lib.stie-aub.ac.id/repository/free-coin-master-hack-no-verification_GM406889139.pdf
- http://lib.stie-aub.ac.id/repository/pokemon-go-free-zone_GM1094591345.pdf
- http://lib.stie-aub.ac.id/repository/bloxrp-money-hack-roblox_GM431946152.pdf
- http://lib.stie-aub.ac.id/repository/coin-master-free-attack-link_GM406889139.pdf
- http://lib.stie-aub.ac.id/repository/free-robux-generator-no-verification_GM431946152.pdf
- http://lib.stie-aub.ac.id/repository/free-gold-cards-coin-master_GM406889139.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000055a4.bin` `c26cca64cf30aceaaa68a4dfaac34e6e2d0e8ec238eb109c6bdf69cde1218c79`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x55A4	25040 bytes
`font_01_sfnt_off00008f81.bin` `23f4c6d0bfdce0b55b29b4c4e1f8fc5f357783b93db13de52c4fadcc57c1eadd`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8F81	19128 bytes

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