PDF malware analysis — malicious · 4147938b42d40d19

MALICIOUS

PDF

33.8 KB Created: 2021-06-26 22:25:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05

MD5: 7463fe4c3fd188bfadfd176aef42e240 SHA-1: 567bb14f860a641de0d5c37115f62364d3d44ba0 SHA-256: 4147938b42d40d19e7e226f0698c1952ca1e2ad8943c32ce1633940ebc82ec66

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9824

Heuristics 4

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-weight-lifting-simulator-3-cheats-game-hack PDF link annotation
- https://laokhwanhos.com/ckfinder/userfiles/files/coin-master-date-and-time-hack_GM406889139.pdfIn PDF document text
- https://laokhwanhos.com/ckfinder/userfiles/files/hack-counter-blox-roblox-offensive_GM431946152.pdfIn PDF document text
- https://laokhwanhos.com/ckfinder/userfiles/files/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
- https://laokhwanhos.com/ckfinder/userfiles/files/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
- https://laokhwanhos.com/ckfinder/userfiles/files/free-robux-no-scam_GM431946152.pdfIn PDF document text
- https://laokhwanhos.com/ckfinder/userfiles/files/spins-gratis-coin-master-hoy_GM406889139.pdfIn PDF document text
- https://laokhwanhos.com/ckfinder/userfiles/files/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
- https://laokhwanhos.com/ckfinder/userfiles/files/roblox-free-giveaway_GM431946152.pdfIn PDF document text
- https://laokhwanhos.com/ckfinder/userfiles/files/roblox-free-pc_GM431946152.pdfIn PDF document text
- https://laokhwanhos.com/ckfinder/userfiles/files/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
- https://laokhwanhos.com/ckfinder/userfiles/files/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
- https://laokhwanhos.com/ckfinder/userfiles/files/roblox-premium-free_GM431946152.pdfIn PDF document text
- https://laokhwanhos.com/ckfinder/userfiles/files/free-roblox-exploits_GM431946152.pdfIn PDF document text
- https://laokhwanhos.com/ckfinder/userfiles/files/minecraft-dungeons-free_GM479516143.pdfIn PDF document text
- https://laokhwanhos.com/ckfinder/userfiles/files/free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
- https://laokhwanhos.com/ckfinder/userfiles/files/free-robux-no-password_GM431946152.pdfIn PDF document text
- https://laokhwanhos.com/ckfinder/userfiles/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
- https://laokhwanhos.com/ckfinder/userfiles/files/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://laokhwanhos.com/ckfinder/userfiles/files/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
- https://laokhwanhos.com/ckfinder/userfiles/files/free-minecraft-mods-for-ps4_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_off00002a9a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2A9A	22732 bytes
SHA-256: `c79f87b25d45391298583e80e2792974d793fdb9ce8b5c1e8458a5dd30015172`
`font_01_sfnt_off00005d82.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5D82	19648 bytes
SHA-256: `11d1f336cd406ec064c44621c8e24fa5b28427b6862db3ba67e3d0533324f010`

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