PDF malware analysis — malicious · ddc13fed6bdf3d57

MALICIOUS

PDF

34.5 KB Created: 2021-06-18 06:32:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: bd92fc8ec4ace8d20354c8cf041e6844 SHA-1: 31489ae1b250751046531fac54902cd44a7eced7 SHA-256: ddc13fed6bdf3d57f5b03b6281b429104f37bb9ec9bb6f9ea0cd0856454753af

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains a high-confidence heuristic firing for a game hack lure, directing users to a suspicious URL. The document body and extracted URLs reinforce this, indicating a likely attempt to trick users into downloading malware or visiting a phishing site. No scripts were extracted from this sample, but the embedded URL is the primary indicator of malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

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/hack-roblox-kill-game-hack PDF link annotation
- https://htdvn.com/public/upload/files/coin-master-free-coins-spins_GM406889139.pdfIn PDF document text
- https://htdvn.com/public/upload/files/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://htdvn.com/public/upload/files/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
- https://htdvn.com/public/upload/files/robux-adder_GM431946152.pdfIn PDF document text
- https://htdvn.com/public/upload/files/coin-master-reward-link-2021_GM406889139.pdfIn PDF document text
- https://htdvn.com/public/upload/files/free-vip-server-roblox_GM431946152.pdfIn PDF document text
- https://htdvn.com/public/upload/files/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
- https://htdvn.com/public/upload/files/paid-roblox-cheats_GM431946152.pdfIn PDF document text
- https://htdvn.com/public/upload/files/cm-daily-spins_GM406889139.pdfIn PDF document text
- https://htdvn.com/public/upload/files/how-to-hack-a-minecraft-server-and-make-yourself-op_GM479516143.pdfIn PDF document text
- https://htdvn.com/public/upload/files/roblox-hack-deutsch-ohne-handynummer_GM431946152.pdfIn PDF document text
- https://htdvn.com/public/upload/files/hacker-coin-master_GM406889139.pdfIn PDF document text
- https://htdvn.com/public/upload/files/roblox-lumber-tycoon-2-money-hack-cheat-engine_GM431946152.pdfIn PDF document text
- https://htdvn.com/public/upload/files/free-roblox-generator-for-roblox_GM431946152.pdfIn PDF document text
- https://htdvn.com/public/upload/files/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
- https://htdvn.com/public/upload/files/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
- https://htdvn.com/public/upload/files/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
- https://htdvn.com/public/upload/files/coin-master-free-gold_GM406889139.pdfIn PDF document text
- https://htdvn.com/public/upload/files/coin-master-spins-2021_GM406889139.pdfIn PDF document text
- https://htdvn.com/public/upload/files/get-free-lives-on-coin-master_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_off000032ac.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x32AC	22088 bytes
SHA-256: `6fa4b141374d86d7a42893250f862660c2d986c7c09cdfa956fe2465b5825d51`
`font_01_sfnt_off00006303.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6303	18592 bytes
SHA-256: `20f01cacd5c7c0ce34c301dc7e7b42b353d97a68bc205a949920fd7e03cd2eb3`

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