PDF malware analysis — malicious · c265463b5ea7a31a

MALICIOUS

PDF

44.3 KB Created: 2021-04-22 22:35:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11

MD5: 6a2022b62164639f61e4fb51cea172b7 SHA-1: d946300bf57b0ff60d89038a1b389a18077086e9 SHA-256: c265463b5ea7a31a3f90b8864301d9af94a586ea261a54af2db2f731cccd16c1

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document employs a common lure related to game hacks and free generators to entice users. It contains multiple embedded URLs that redirect to potentially malicious sites, including one explicitly mentioning 'roblox-hacks-winrar-game-hack'. The ML classifier also flagged this PDF as malicious with high confidence. While no scripts were directly extracted, the PDF structure and embedded links suggest an attempt to lead the user to download further malicious content or visit phishing sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9868

Heuristics 4

PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
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 https://netsecure.pro/app/431946152/roblox-hacks-winrar-game-hack PDF link annotation
- http://ferienwohnung-dorsten.com/images/roblox-name-changer-free.pdfIn PDF document text
- http://ferienwohnung-dorsten.com/images/how-to-hack-roblox-accounts-passwords-2021.pdfIn PDF document text
- http://ferienwohnung-dorsten.com/images/luis1-coment-robux-free.pdfIn PDF document text
- http://ferienwohnung-dorsten.com/images/roblox-cheats-for-robux-with-inspect-2021.pdfIn PDF document text
- http://ferienwohnung-dorsten.com/images/how-to-get-free-roblox-card-codes-hack.pdfIn PDF document text
- http://ferienwohnung-dorsten.com/images/free-roblox-group-payouts.pdfIn PDF document text
- http://ferienwohnung-dorsten.com/images/how-to-get-free-stuff-on-roblox-hack.pdfIn PDF document text
- http://ferienwohnung-dorsten.com/images/roblox-phantom-forcews-hack.pdfIn PDF document text
- http://ferienwohnung-dorsten.com/images/roblox-cheat-forum.pdfIn PDF document text
- http://ferienwohnung-dorsten.com/images/bandit-free-roblox.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00004265.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4265	27684 bytes
SHA-256: `5a30704de8a1ffd26cf15f84f14a704f6a67a1d716a1de5c376964f8e9e65698`
`font_01_sfnt_off000080fc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x80FC	2832 bytes
SHA-256: `77ae1c4cffa647a8fd533dfa4102e94364989f9e80b9cd131876e9d1005899a2`
`font_02_sfnt_off00008aad.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8AAD	18500 bytes
SHA-256: `be3884cb86120afc2a017c86853ae82b9ba9194ffd234ffd02e90cdbfa7332d0`

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