PDF malware analysis — malicious · 228637e32779f1bc

MALICIOUS

PDF

36.0 KB Created: 2021-06-27 09:03:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17

MD5: 8ec046c534b61e868f9c6208da1bffa4 SHA-1: 8762d364ba5aa6dd211a5ac6f4637cdb0576af42 SHA-256: 228637e32779f1bc4e98e6a326e3617022edb0b37186cff72a8efc0d1c97bf17

142 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF file contains numerous links to external websites, many of which are presented as 'game hacks' or 'free currency generators' for popular games like Roblox. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of these links, suggesting a link farm or SEO manipulation tactic. The primary URL http://netcdn.co/app/431946152/roblox-hack-robux-no-download-no-pub-game-hack is a direct lure for a game hack. While no scripts were extracted, the document's structure and content strongly suggest a phishing or scam attempt designed to drive traffic to malicious or ad-heavy sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 5

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.
PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE

PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
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-hack-robux-no-download-no-pub-game-hack PDF link annotation
- https://www.alamrayabali.com/assets/CKImages/files/how-to-get-minecraft-for-free-on-xbox-one_GM479516143.pdfIn PDF document text
- https://www.alamrayabali.com/assets/CKImages/files/how-to-hack-a-minecraft-account_GM479516143.pdfIn PDF document text
- https://www.alamrayabali.com/assets/CKImages/files/hack-para-dragon-ball-rage-roblox-2021-android_GM431946152.pdfIn PDF document text
- https://www.alamrayabali.com/assets/CKImages/files/how-to-make-a-roblox-group-for-free_GM431946152.pdfIn PDF document text
- https://www.alamrayabali.com/assets/CKImages/files/orewards-com-free-robux_GM431946152.pdfIn PDF document text
- https://www.alamrayabali.com/assets/CKImages/files/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
- https://www.alamrayabali.com/assets/CKImages/files/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
- https://www.alamrayabali.com/assets/CKImages/files/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.alamrayabali.com/assets/CKImages/files/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
- https://www.alamrayabali.com/assets/CKImages/files/roblox-adopt-me-cheats-to-get-a-neon-unicorn_GM431946152.pdfIn PDF document text
- https://www.alamrayabali.com/assets/CKImages/files/actual-free-robux_GM431946152.pdfIn PDF document text
- https://www.alamrayabali.com/assets/CKImages/files/upgrade-to-roblox-builders-club-free_GM431946152.pdfIn PDF document text
- https://www.alamrayabali.com/assets/CKImages/files/free-roblox-intros_GM431946152.pdfIn PDF document text
- https://www.alamrayabali.com/assets/CKImages/files/broward-county-roblox-free_GM431946152.pdfIn PDF document text
- https://www.alamrayabali.com/assets/CKImages/files/free-games-like-roblox_GM431946152.pdfIn PDF document text
- https://www.alamrayabali.com/assets/CKImages/files/how-to-make-robux-on-roblox_GM431946152.pdfIn PDF document text
- https://www.alamrayabali.com/assets/CKImages/files/roblox-bloxburg-hack_GM431946152.pdfIn PDF document text
- https://www.alamrayabali.com/assets/CKImages/files/coin-master-tricks-and-hacks_GM406889139.pdfIn PDF document text
- https://www.alamrayabali.com/assets/CKImages/files/how-to-get-roblox-premium-for-free_GM431946152.pdfIn PDF document text
- https://www.alamrayabali.com/assets/CKImages/files/free-minecraft-servers-to-join_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_off000032fd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x32FD	23112 bytes
SHA-256: `842fd6e6d60ce6591c653ab07efb106cd068e86fd93a0cfcead554c759b5175e`
`font_01_sfnt_off00006680.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6680	19456 bytes
SHA-256: `baa4497ef159efc5971ac02d5f6dfd7f7f6e2a7d34c6b6cae7f6ac58ad15ca96`

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