PDF malware analysis — malicious · 41d10d0832430df4

MALICIOUS

PDF

33.3 KB Created: 2021-06-29 08:28:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20

MD5: f32683c73e2024b3af86766cad5d1abb SHA-1: 9544919355753e04f3166b14613501e40954ebff SHA-256: 41d10d0832430df4f5d77ca029232669ed240694031b846c4e8610707c70d195

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document employs a common lure of free game hacks and cheats to entice users. It contains multiple embedded URLs that lead to malicious redirector infrastructure, specifically http://netcdn.co/app/431946152/roblox-pokemon-brick-bronze-cheats-game-hack, which is known to host malicious content. The document's structure and embedded links strongly suggest it is designed to lead users to potentially harmful websites, likely for further malware delivery or phishing.

Machine Learning

Nyx PDF Classifier malicious score 0.9824

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 http://netcdn.co/app/431946152/roblox-pokemon-brick-bronze-cheats-game-hack In PDF document text
- https://www.poc-helmet.com/ckfinder/userfiles/files/bloxland-earn-free-robux_GM431946152.pdfIn PDF document text
- https://www.poc-helmet.com/ckfinder/userfiles/files/ww-roblox-come_GM431946152.pdfIn PDF document text
- https://www.poc-helmet.com/ckfinder/userfiles/files/roblox-hack-tool_GM431946152.pdfIn PDF document text
- https://www.poc-helmet.com/ckfinder/userfiles/files/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://www.poc-helmet.com/ckfinder/userfiles/files/how-to-change-your-roblox-password-when-you-are-hacked_GM431946152.pdfIn PDF document text
- https://www.poc-helmet.com/ckfinder/userfiles/files/free-robux-youtube_GM431946152.pdfIn PDF document text
- https://www.poc-helmet.com/ckfinder/userfiles/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
- https://www.poc-helmet.com/ckfinder/userfiles/files/coins-master-hack_GM406889139.pdfIn PDF document text
- https://www.poc-helmet.com/ckfinder/userfiles/files/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://www.poc-helmet.com/ckfinder/userfiles/files/hack-de-roblox-para-atravesar-cosas-facilmente_GM431946152.pdfIn PDF document text
- https://www.poc-helmet.com/ckfinder/userfiles/files/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
- https://www.poc-helmet.com/ckfinder/userfiles/files/roblox-black-clover-online-cheat_GM431946152.pdfIn PDF document text
- https://www.poc-helmet.com/ckfinder/userfiles/files/king-hack-roblox_GM431946152.pdfIn PDF document text
- https://www.poc-helmet.com/ckfinder/userfiles/files/free-roblox-premium_GM431946152.pdfIn PDF document text
- https://www.poc-helmet.com/ckfinder/userfiles/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
- https://www.poc-helmet.com/ckfinder/userfiles/files/roblox-land-free-robux_GM431946152.pdfIn PDF document text
- https://www.poc-helmet.com/ckfinder/userfiles/files/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
- https://www.poc-helmet.com/ckfinder/userfiles/files/how-to-get-free-robux-no-scam_GM431946152.pdfIn PDF document text
- https://www.poc-helmet.com/ckfinder/userfiles/files/pokemon-go-free-codes_GM1094591345.pdfIn PDF document text
- https://www.poc-helmet.com/ckfinder/userfiles/files/hacking-prestonplayz-roblox-account_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_off00002af7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2AF7	22268 bytes
SHA-256: `d2043af0471945dc53e6dfd7b9236fbffabee8088bdce59b389877c989cd390f`
`font_01_sfnt_off00005c1b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5C1B	19544 bytes
SHA-256: `c750f1d01fc70e677591513cd83a49e172cbdd087a4d1c466eb2d42b7651384a`

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