PDF malware analysis — malicious · 1dece422d4869986

MALICIOUS

PDF

34.8 KB Created: 2021-07-06 17:19:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18

MD5: 1ecd5d6b08cc22ac98bc7bc36c71085c SHA-1: 436c9daf038cfb96ec21d8cc4091077cd5cdfc9d SHA-256: 1dece422d4869986d15d2ebefe2b7c59c37d2e14da9ec9877946ee91c8325a3e

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 0.9980

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.tw/app/406889139/how-to-log-out-of-coin-master-game-hack PDF link annotation
- https://topkoreamart.com/public/upload/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
- https://topkoreamart.com/public/upload/files/how-to-hack-into-peoples-accounts-on-roblox_GM431946152.pdfIn PDF document text
- https://topkoreamart.com/public/upload/files/free-roblox-robux-generator-2021-without-human-verify_GM431946152.pdfIn PDF document text
- https://topkoreamart.com/public/upload/files/roblox-create-texture-hack_GM431946152.pdfIn PDF document text
- https://topkoreamart.com/public/upload/files/play-roblox-free-online_GM431946152.pdfIn PDF document text
- https://topkoreamart.com/public/upload/files/cheat-codes-for-coin-master_GM406889139.pdfIn PDF document text
- https://topkoreamart.com/public/upload/files/roblox-2021-hack_GM431946152.pdfIn PDF document text
- https://topkoreamart.com/public/upload/files/free-coin-master-hacks_GM406889139.pdfIn PDF document text
- https://topkoreamart.com/public/upload/files/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
- https://topkoreamart.com/public/upload/files/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
- https://topkoreamart.com/public/upload/files/how-hack-in-prison-life-20-roblox_GM431946152.pdfIn PDF document text
- https://topkoreamart.com/public/upload/files/telecharger-hack-pour-roblox-mad-city_GM431946152.pdfIn PDF document text
- https://topkoreamart.com/public/upload/files/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
- https://topkoreamart.com/public/upload/files/pokemon-go-free-yamask_GM1094591345.pdfIn PDF document text
- https://topkoreamart.com/public/upload/files/roblox-hair-for-free_GM431946152.pdfIn PDF document text
- https://topkoreamart.com/public/upload/files/is-tiktok-free_GM835599320.pdfIn PDF document text
- https://topkoreamart.com/public/upload/files/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://topkoreamart.com/public/upload/files/give-me-robux_GM431946152.pdfIn PDF document text
- https://topkoreamart.com/public/upload/files/coin-master-blogspot-free-spins_GM406889139.pdfIn PDF document text
- https://topkoreamart.com/public/upload/files/play-games-for-free-robux_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_off000032ca.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x32CA	22848 bytes
SHA-256: `a83aac2483bb5f7d06c8f1da5d5d496cb96ff8b6e1166907d573569c03a60eb1`
`font_01_sfnt_off000065d6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x65D6	18140 bytes
SHA-256: `306109c3349e8d29b2790c39b29fd4e9a572686a4af6e330bd3a6b0da0f363de`

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