PDF malware analysis — malicious · f25dc1af1cb104f3

MALICIOUS

PDF

33.0 KB Created: 2021-07-07 03:14:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 9808cd232a1af6fd7c96b1aa91a13af5 SHA-1: 505a96e66857a4eb0ca0f2fcabb6777c3cc5bf7a SHA-256: f25dc1af1cb104f3fe546fac04488785778c38c66e5662163653467e554094fe

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/479516143/minecraft-ps4-free-game-hack PDF link annotation
- https://www.astrospace.com.tw/upload/files/robux-free-online_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/robux-tv-hack_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/cheat-engine-get-free-op-on-roblox_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/free-robux-legit-2021-no-survey_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/annoying-orange-clothes-free-on-roblox_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/free-roblox-generator_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/roblox-free-codes-for-items_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/free-roblox-girl-clothes_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/free-texture-packs-for-minecraft-pe_GM479516143.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/everything-free-in-roblox_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/free-robux-no-scam_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/roblox-apocalypse-rising-cheats_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/gamehunters-club-coin-master_GM406889139.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/cool-free-minecraft-skins_GM479516143.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/rbx-com_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/roblox-hackrar-2021_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/coin-master-free-spins-without-verification_GM406889139.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/how-hack-fairytaill-forgoten-legend-roblox_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_off0000301e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x301E	21436 bytes
SHA-256: `69d8be2ff79842c59f1acaf024f5c03bb8b961b711f2c2475f31e407c539dc1c`
`font_01_sfnt_off00005ee8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5EE8	18072 bytes
SHA-256: `07bff6b201fefb5b79bda7bcb703d65895bb3fadc7074254717ea8518f49b268`

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