PDF malware analysis — malicious · 8fac341ed9926361

MALICIOUS

PDF

45.3 KB Created: 2021-05-12 10:30:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21

MD5: db98b7581d3db43eb6b8e5c43738c404 SHA-1: cb4c6b598dfd06777fb81417a5565db3d86b4b03 SHA-256: 8fac341ed9926361fcac80bbcc9634b4bdf4d4d71eb0ae2ebda89593d068946f

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains multiple links to a known malicious redirector infrastructure, specifically advertising free game hacks and generators. The ML classifier also flagged this PDF as malicious. The embedded URL leads to a site that likely serves a malicious payload or initiates further phishing attempts.

Machine Learning

Nyx PDF Classifier malicious score 0.9551

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.
PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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
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://netcdn.xyz/app/479516143/minecraft-ps4-free-game-hack In PDF document text
- https://www.howard-avocats.com/assets/images/uploads/ckfinder/files/how-do-you-get-roblox-for-free_GM431946152.pdfIn PDF document text
- https://www.howard-avocats.com/assets/images/uploads/ckfinder/files/minecraft-pe-015-0-apk-free-download_GM479516143.pdfIn PDF document text
- https://www.howard-avocats.com/assets/images/uploads/ckfinder/files/coin-master-free-spin-game_GM406889139.pdfIn PDF document text
- https://www.howard-avocats.com/assets/images/uploads/ckfinder/files/coin-master-free-spins-link-2021-no-verification_GM406889139.pdfIn PDF document text
- https://www.howard-avocats.com/assets/images/uploads/ckfinder/files/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
- https://www.howard-avocats.com/assets/images/uploads/ckfinder/files/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
- https://www.howard-avocats.com/assets/images/uploads/ckfinder/files/how-to-change-your-username-on-roblox-for-free_GM431946152.pdfIn PDF document text
- https://www.howard-avocats.com/assets/images/uploads/ckfinder/files/kuso-icu-roblox-hack_GM431946152.pdfIn PDF document text
- https://www.howard-avocats.com/assets/images/uploads/ckfinder/files/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
- https://www.howard-avocats.com/assets/images/uploads/ckfinder/files/coin-master-hack-2021-free_GM406889139.pdfIn PDF document text
- https://www.howard-avocats.com/assets/images/uploads/ckfinder/files/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.howard-avocats.com/assets/images/uploads/ckfinder/files/how-to-get-a-lot-of-robux_GM431946152.pdfIn PDF document text
- https://www.howard-avocats.com/assets/images/uploads/ckfinder/files/free-robux-hacker-us_GM431946152.pdfIn PDF document text
- https://www.howard-avocats.com/assets/images/uploads/ckfinder/files/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
- https://www.howard-avocats.com/assets/images/uploads/ckfinder/files/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
- https://www.howard-avocats.com/assets/images/uploads/ckfinder/files/google-how-do-you-get-robux_GM431946152.pdfIn PDF document text
- https://www.howard-avocats.com/assets/images/uploads/ckfinder/files/roblox-girl_GM431946152.pdfIn PDF document text
- https://www.howard-avocats.com/assets/images/uploads/ckfinder/files/windows-10-minecraft-free-with-java_GM479516143.pdfIn PDF document text
- https://www.howard-avocats.com/assets/images/uploads/ckfinder/files/coin-master-free-spin-no-offers_GM406889139.pdfIn PDF document text
- https://www.howard-avocats.com/assets/images/uploads/ckfinder/files/free-spin-link-coin-master-app_GM406889139.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_off00004de9.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4DE9	25420 bytes
SHA-256: `3d2a10663e13ea9c9ab343163ed7cf9c7058fb9635d1b668179cf2050c2ef5de`
`font_01_sfnt_off00008680.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8680	2824 bytes
SHA-256: `61b3a573627d4f03d30684157e1627da3b4499cefab0fdf17b45999135b0250b`
`font_02_sfnt_off00009026.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9026	17784 bytes
SHA-256: `eb08404513e1de89cb797b3c4bca4c8ebf2d802e230ebef8911427dd20e63131`

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