PDF malware analysis — malicious · 328f167d45155e83

MALICIOUS

PDF

43.7 KB Created: 2021-05-11 22:30:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-24

MD5: bda21f756f803e33d5f0919c5939eb5b SHA-1: da3909b4aa9bcb0a0cf735bb462b7baaea61fa48 SHA-256: 328f167d45155e834d28af71a16ff176024e1f5cd47349b75a0a2f61af56173d

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirector infrastructure, specifically advertising free game hacks and currency. The primary lure URL is https://netcdn.xyz/app/431946152/free-robux-no-human-verification-or-survey-game-hack. This indicates a social engineering attack designed to trick users into visiting potentially harmful sites, likely leading to further malware downloads or scams.

Machine Learning

Nyx PDF Classifier malicious score 0.9969

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/431946152/free-robux-no-human-verification-or-survey-game-hack In PDF document text
- https://www.indobalitour.com/new/public/ckfinder/userfiles/files/coin-master-free-spins-hack-apk-download_GM406889139.pdfIn PDF document text
- https://www.indobalitour.com/new/public/ckfinder/userfiles/files/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
- https://www.indobalitour.com/new/public/ckfinder/userfiles/files/coin-master-spin-hack-without-verification_GM406889139.pdfIn PDF document text
- https://www.indobalitour.com/new/public/ckfinder/userfiles/files/coinmaster-com_GM406889139.pdfIn PDF document text
- https://www.indobalitour.com/new/public/ckfinder/userfiles/files/coin-master-ids-for-free-spins_GM406889139.pdfIn PDF document text
- https://www.indobalitour.com/new/public/ckfinder/userfiles/files/minecraft-building-hacks_GM479516143.pdfIn PDF document text
- https://www.indobalitour.com/new/public/ckfinder/userfiles/files/minecraft-hacks_GM479516143.pdfIn PDF document text
- https://www.indobalitour.com/new/public/ckfinder/userfiles/files/roblox-free-hair-boy_GM431946152.pdfIn PDF document text
- https://www.indobalitour.com/new/public/ckfinder/userfiles/files/can-you-still-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
- https://www.indobalitour.com/new/public/ckfinder/userfiles/files/roblox-account-hacker-tool_GM431946152.pdfIn PDF document text
- https://www.indobalitour.com/new/public/ckfinder/userfiles/files/free-robux-com-no-verification_GM431946152.pdfIn PDF document text
- https://www.indobalitour.com/new/public/ckfinder/userfiles/files/free-private-minecraft-server_GM479516143.pdfIn PDF document text
- https://www.indobalitour.com/new/public/ckfinder/userfiles/files/free-robux-master_GM431946152.pdfIn PDF document text
- https://www.indobalitour.com/new/public/ckfinder/userfiles/files/coin-master-hacks-xyz_GM406889139.pdfIn PDF document text
- https://www.indobalitour.com/new/public/ckfinder/userfiles/files/free-robux-on-iphone_GM431946152.pdfIn PDF document text
- https://www.indobalitour.com/new/public/ckfinder/userfiles/files/robuxfree-con_GM431946152.pdfIn PDF document text
- https://www.indobalitour.com/new/public/ckfinder/userfiles/files/roblox-admin-hack_GM431946152.pdfIn PDF document text
- https://www.indobalitour.com/new/public/ckfinder/userfiles/files/free-robux-only-username_GM431946152.pdfIn PDF document text
- https://www.indobalitour.com/new/public/ckfinder/userfiles/files/free-minecraft-hosting-24-7_GM479516143.pdfIn PDF document text
- https://www.indobalitour.com/new/public/ckfinder/userfiles/files/roblox-army-free-robux_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_003_off00004aa4.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4AA4	26336 bytes
SHA-256: `a5b0ff2ae1d41139a13c5870135eb822646be308b6d964e266bf7f1985149e78`
`font_01_sfnt_off000085dc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x85DC	19156 bytes
SHA-256: `67fe8f54727a48f1cd96414783693fce3a40c8eaba0da55a0542d393d9c1d7aa`

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