PDF malware analysis — malicious · 9f72e63587d43f4a

MALICIOUS

PDF

35.4 KB Created: 2021-07-03 14:36:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22

MD5: 881f626d6352fc7f439d3cd46ce3830b SHA-1: b5dd3c508d97a7399719d9c52cc0b6c23d4f81ca SHA-256: 9f72e63587d43f4ab0421c93306c3b5118c61ae53c349ea07075cdf3d676e29b

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document employs a lure of game hacks and free currency to trick users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, likely serving as a gateway to further malicious content or exploits. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or social engineering attack aimed at driving traffic to potentially harmful sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

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.tw/app/406889139/how-to-hack-coin-master-without-root-game-hack In PDF document text
- https://www.dc-itsolutions.com/userfiles/files/minecraft-hack-client-download_GM479516143.pdfIn PDF document text
- https://www.dc-itsolutions.com/userfiles/files/free-roblox-accounts-with-obc-2021_GM431946152.pdfIn PDF document text
- https://www.dc-itsolutions.com/userfiles/files/roblox-hack-generator_GM431946152.pdfIn PDF document text
- https://www.dc-itsolutions.com/userfiles/files/roblox-april-fools-hack_GM431946152.pdfIn PDF document text
- https://www.dc-itsolutions.com/userfiles/files/play-roblox-hacked_GM431946152.pdfIn PDF document text
- https://www.dc-itsolutions.com/userfiles/files/giving-away-free-toy-codes-for-roblox_GM431946152.pdfIn PDF document text
- https://www.dc-itsolutions.com/userfiles/files/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
- https://www.dc-itsolutions.com/userfiles/files/roblox-natural-disater-hacks_GM431946152.pdfIn PDF document text
- https://www.dc-itsolutions.com/userfiles/files/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
- https://www.dc-itsolutions.com/userfiles/files/how-to-hack-roblox-accounts-easy-2021_GM431946152.pdfIn PDF document text
- https://www.dc-itsolutions.com/userfiles/files/easy-robux-generator_GM431946152.pdfIn PDF document text
- https://www.dc-itsolutions.com/userfiles/files/how-to-get-100-robux-for-free_GM431946152.pdfIn PDF document text
- https://www.dc-itsolutions.com/userfiles/files/minecraft_GM479516143.pdfIn PDF document text
- https://www.dc-itsolutions.com/userfiles/files/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
- https://www.dc-itsolutions.com/userfiles/files/coin-master-rewards-free-spins_GM406889139.pdfIn PDF document text
- https://www.dc-itsolutions.com/userfiles/files/coin-master-free-spins-and-coins-generator_GM406889139.pdfIn PDF document text
- https://www.dc-itsolutions.com/userfiles/files/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
- https://www.dc-itsolutions.com/userfiles/files/coin-master-hack-spins-apk-download_GM406889139.pdfIn PDF document text
- https://www.dc-itsolutions.com/userfiles/files/mobihack-net-roblox-hack_GM431946152.pdfIn PDF document text
- https://www.dc-itsolutions.com/userfiles/files/free-roblox-exploits-2021_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
`stream_002_off000033a5.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x33A5	22760 bytes
SHA-256: `d664d910d48d0a2a0b133af9228251ca677adddd6946971d473371307fc8c20e`
`font_01_sfnt_off00006695.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6695	18672 bytes
SHA-256: `65f2c136a711b33bae163ea9f406f42914fe63f4814e0759507e5b4be6ac5284`

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