PDF malware analysis — malicious · 920308e5bd35f0cc

MALICIOUS

PDF

34.7 KB Created: 2021-06-29 02:29:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16

MD5: 31773ef5aeb38ead390425a88f969385 SHA-1: 19eb76378715e6c2d2bcdb15dffc4836bdc815be SHA-256: 920308e5bd35f0ccc40e9bb27bf00ad9d59f3906fa2600b40fdeb381896719d4

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous embedded links, many of which are part of a link farm designed to lure users into downloading potentially malicious files related to game cheats and hacks. The ML classifier strongly indicated maliciousness, and the presence of a call-to-action phrase further supports a deceptive intent. The primary IOCs are the external URLs pointing to these lure documents.

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/roblox-legendary-football-vip-server-free-2021-game-hack PDF link annotation
- https://www.fotokad.ae/uploaded_files/userfiles/files/freerobuxhack-us_GM431946152.pdfIn PDF document text
- https://www.fotokad.ae/uploaded_files/userfiles/files/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.fotokad.ae/uploaded_files/userfiles/files/how-to-hack-the-swat-clothes-in-roblox_GM431946152.pdfIn PDF document text
- https://www.fotokad.ae/uploaded_files/userfiles/files/robux-help-com-to-earn-free-25k-robux_GM431946152.pdfIn PDF document text
- https://www.fotokad.ae/uploaded_files/userfiles/files/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
- https://www.fotokad.ae/uploaded_files/userfiles/files/how-to-hack-someones-minecraft-account_GM479516143.pdfIn PDF document text
- https://www.fotokad.ae/uploaded_files/userfiles/files/pubg-uc-wallpaper_GM1330123889.pdfIn PDF document text
- https://www.fotokad.ae/uploaded_files/userfiles/files/free-spin-hack-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.fotokad.ae/uploaded_files/userfiles/files/roblox-toy-codes-free_GM431946152.pdfIn PDF document text
- https://www.fotokad.ae/uploaded_files/userfiles/files/haktuts-2021-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
- https://www.fotokad.ae/uploaded_files/userfiles/files/coin-master-hack-spin-generator_GM406889139.pdfIn PDF document text
- https://www.fotokad.ae/uploaded_files/userfiles/files/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.fotokad.ae/uploaded_files/userfiles/files/2021-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://www.fotokad.ae/uploaded_files/userfiles/files/free-robux-gen_GM431946152.pdfIn PDF document text
- https://www.fotokad.ae/uploaded_files/userfiles/files/freerobuxhack-us-2021_GM431946152.pdfIn PDF document text
- https://www.fotokad.ae/uploaded_files/userfiles/files/free-tiktok-comments_GM835599320.pdfIn PDF document text
- https://www.fotokad.ae/uploaded_files/userfiles/files/roblox-promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
- https://www.fotokad.ae/uploaded_files/userfiles/files/free-robux-groups-in-roblox_GM431946152.pdfIn PDF document text
- https://www.fotokad.ae/uploaded_files/userfiles/files/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
- https://www.fotokad.ae/uploaded_files/userfiles/files/i-am-now-crying-because-i-got-hacked-roblox_GM431946152.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_off00003017.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3017	21572 bytes
SHA-256: `999a2017ca691e7b34985c9e77ecd799624809dd73b9ed119ebd248087934b8b`
`font_01_sfnt_off00005f60.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5F60	20056 bytes
SHA-256: `523312c80e21bd56b7a7f5cdedb687633ad29e11497683756581478d82eea0c7`

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