PDF malware analysis — malicious · 412b9b8a255503a9

MALICIOUS

PDF

34.5 KB Created: 2021-06-20 06:23:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15

MD5: 645e415fdbc3ff3ad0b5b43fe68673a5 SHA-1: 5eff20b466516b7af2a451c569fa81b2816ee90b SHA-256: 412b9b8a255503a944ab953edcde17b16ee3d34b8381a3f5187058f1d4342b7f

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous links to external websites, many of which are presented as 'hacks' or 'free rewards' for popular games. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of such links, suggesting a tactic to drive traffic to potentially malicious or ad-filled pages. The ML classifier also strongly flagged this PDF as malicious.

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/penguinson-roblox-free-robux-hack-game-hack PDF link annotation
- https://balibalotour.com/new/public/ckfinder/userfiles/files/coin-master-free-spin-reward-links_GM406889139.pdfIn PDF document text
- https://balibalotour.com/new/public/ckfinder/userfiles/files/how-can-u-get-free-robux_GM431946152.pdfIn PDF document text
- https://balibalotour.com/new/public/ckfinder/userfiles/files/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
- https://balibalotour.com/new/public/ckfinder/userfiles/files/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
- https://balibalotour.com/new/public/ckfinder/userfiles/files/easy-robux-hack-2021_GM431946152.pdfIn PDF document text
- https://balibalotour.com/new/public/ckfinder/userfiles/files/free-robux-gift-card-giveaway_GM431946152.pdfIn PDF document text
- https://balibalotour.com/new/public/ckfinder/userfiles/files/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
- https://balibalotour.com/new/public/ckfinder/userfiles/files/free-robux-from-gravel-pit_GM431946152.pdfIn PDF document text
- https://balibalotour.com/new/public/ckfinder/userfiles/files/free-spins-and-coins-coin-master-links_GM406889139.pdfIn PDF document text
- https://balibalotour.com/new/public/ckfinder/userfiles/files/spin-links-for-coin-master_GM406889139.pdfIn PDF document text
- https://balibalotour.com/new/public/ckfinder/userfiles/files/free-robux-working_GM431946152.pdfIn PDF document text
- https://balibalotour.com/new/public/ckfinder/userfiles/files/how-to-get-hacks-on-minecraft_GM479516143.pdfIn PDF document text
- https://balibalotour.com/new/public/ckfinder/userfiles/files/hack-coin-master-game-download_GM406889139.pdfIn PDF document text
- https://balibalotour.com/new/public/ckfinder/userfiles/files/how-to-hack-roblox-inspect_GM431946152.pdfIn PDF document text
- https://balibalotour.com/new/public/ckfinder/userfiles/files/how-do-you-get-free-daily-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://balibalotour.com/new/public/ckfinder/userfiles/files/free-robux-cards_GM431946152.pdfIn PDF document text
- https://balibalotour.com/new/public/ckfinder/userfiles/files/minecraft-com-free_GM479516143.pdfIn PDF document text
- https://balibalotour.com/new/public/ckfinder/userfiles/files/free-robux-no-verification-required_GM431946152.pdfIn PDF document text
- https://balibalotour.com/new/public/ckfinder/userfiles/files/how-to-get-free-robux-no-human-verification-2021-mobile_GM431946152.pdfIn PDF document text
- https://balibalotour.com/new/public/ckfinder/userfiles/files/wurst-client-112-2_GM479516143.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_off0000335b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x335B	21296 bytes
SHA-256: `4360fe2fc6b0675ce73a70689c09b957b9213ce60e5656d1a843ae7f902d673f`
`font_01_sfnt_off00006155.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6155	19236 bytes
SHA-256: `62f8abf07c51ca03e9f6dcb0d912c6c098c800f5c747ad5551c6b8bfaaed2539`

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