PDF malware analysis — malicious · 883e871ab5b7c97a

MALICIOUS

PDF

35.1 KB Created: 2021-06-21 00:48:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27

MD5: 553bc8f5e4c9e36d6c35235db28eb35c SHA-1: 1475b2f2828050794cbb34ea8fb9df88fb32fb5a SHA-256: 883e871ab5b7c97aae0f63aeb1685a4a59632909a389ddd39ce4aebdc0ede20e

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains numerous embedded URLs and a document body that explicitly discusses 'hacking' and obtaining 'free Robux' or other game-related advantages. The presence of a large number of external links, many of which are SEO-optimized PDF links, suggests a link farm or a distribution mechanism for malicious content. The ML classifier also strongly indicated maliciousness.

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 http://netcdn.co/app/431946152/como-hackear-los-robux-game-hack PDF link annotation
- http://www.5oceansoman.com/uploaded_files/userfiles/files/free-tiktok-fans-quick-and-easy_GM835599320.pdfIn PDF document text
- http://www.5oceansoman.com/uploaded_files/userfiles/files/unknown-cheats-roblox-speed-hack_GM431946152.pdfIn PDF document text
- http://www.5oceansoman.com/uploaded_files/userfiles/files/real-way-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
- http://www.5oceansoman.com/uploaded_files/userfiles/files/how-to-get-gold-cards-on-coin-master-hack_GM406889139.pdfIn PDF document text
- http://www.5oceansoman.com/uploaded_files/userfiles/files/www-roblox-cheat_GM431946152.pdfIn PDF document text
- http://www.5oceansoman.com/uploaded_files/userfiles/files/roblox-cheat-engine-health-hack-csgo_GM431946152.pdfIn PDF document text
- http://www.5oceansoman.com/uploaded_files/userfiles/files/minecraft-free-download-chromebook_GM479516143.pdfIn PDF document text
- http://www.5oceansoman.com/uploaded_files/userfiles/files/atf-6-for-free-model-roblox_GM431946152.pdfIn PDF document text
- http://www.5oceansoman.com/uploaded_files/userfiles/files/cheat-codes-for-roblox-murder-mystery-2-pets_GM431946152.pdfIn PDF document text
- http://www.5oceansoman.com/uploaded_files/userfiles/files/free-robux-obby_GM431946152.pdfIn PDF document text
- http://www.5oceansoman.com/uploaded_files/userfiles/files/how-to-make-vip-server-in-roblox-for-free_GM431946152.pdfIn PDF document text
- http://www.5oceansoman.com/uploaded_files/userfiles/files/100-free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
- http://www.5oceansoman.com/uploaded_files/userfiles/files/roblox-exploit-scripts_GM431946152.pdfIn PDF document text
- http://www.5oceansoman.com/uploaded_files/userfiles/files/minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
- http://www.5oceansoman.com/uploaded_files/userfiles/files/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
- http://www.5oceansoman.com/uploaded_files/userfiles/files/coin-master-cheat-apk-free-download_GM406889139.pdfIn PDF document text
- http://www.5oceansoman.com/uploaded_files/userfiles/files/free-tiktok-bots_GM835599320.pdfIn PDF document text
- http://www.5oceansoman.com/uploaded_files/userfiles/files/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
- http://www.5oceansoman.com/uploaded_files/userfiles/files/getrobux-come_GM431946152.pdfIn PDF document text
- http://www.5oceansoman.com/uploaded_files/userfiles/files/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000031ce.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x31CE	22588 bytes
SHA-256: `9f38b65b302f9241a2fff9d34e6f8b344ff375d9e212bfe741b27f3caa432dbe`
`font_01_sfnt_off0000645c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x645C	18980 bytes
SHA-256: `627be8092b50e7a613e3e596ded00c58acf9472aaddcad4b3fbb2eb34560704e`

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