PDF malware analysis — malicious · fb4aa52d505cf5d5

MALICIOUS

PDF

34.2 KB Created: 2021-06-26 22:07:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07

MD5: ef9f7f0fb3f600ec0e9409c570af297f SHA-1: da94cccd9135c8efa520970537a47cfd90fba6e1 SHA-256: fb4aa52d505cf5d5b988442a52e4c1603b56e25f79c22cff0c109b07cd56ed3b

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a prominent link to 'obby-free-robux-elevanoz-game-hack', which is flagged as a lure for game hacks. This URL, http://netcdn.co/app/431946152/obby-free-robux-elevanoz-game-hack, is the primary indicator of malicious intent, likely leading to a phishing site or malware download. The ML classifier also strongly indicated maliciousness.

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/obby-free-robux-elevanoz-game-hack PDF link annotation
- https://www.tiancom.com.tw/upload/files/free-roblox-groups-with-funds_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/rbx-place-free-robux_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/free-minecraft-account-list_GM479516143.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/roblox-hack-infinite-jump-new_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/free-followers-on-tiktok_GM835599320.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/free-texture-packs-for-minecraft-pe_GM479516143.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/free-robux-no-pass-requiredfor-pc_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/free-robux-codes-2021-october_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/free-minecraft-accounts-reddit_GM479516143.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/descargar-roblox-hack-robux_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/coin-master-hacker-club_GM406889139.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/how-to-download-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/how-to-get-free-tokens-in-car-crushers-2-roblox_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/cheat-on-roblox-ghost-simulattor_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/roblox-create-free-vip-servers_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/hacks-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/roblox-people-girl_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/can-i-play-roblox-for-free_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/how-to-get-epic-face-on-roblox-for-free_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_off00002d5d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2D5D	22564 bytes
SHA-256: `8a958182c063bbfdeededa3b78fbfa826f152dcdc9867aaee9f7f31448102ef8`
`font_01_sfnt_off00005ff1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5FF1	19168 bytes
SHA-256: `811cba8a2922552e163580588ab7ef7c992c13180b193ba6e8e3bc2b48cd88ca`

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