PDF malware analysis — malicious · 84f571ba191b5a01

MALICIOUS

PDF

44.1 KB Created: 2021-06-03 16:24:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31

MD5: 4630a785b123eaa939c851a2bd54f814 SHA-1: f2b3cf83b099d0c69c292651143029597785a525 SHA-256: 84f571ba191b5a018e76f17d32a42f77b7570829144eb8a3194167b7bfc9000f

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically advertising game hacks and free generators. The primary lure is a 'Pokemon Go Best Free Outfits' generator, which leads to the URL https://netcdn.online/app/1094591345/pokemon-go-best-free-outfits-game-hack. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

Nyx PDF Classifier malicious score 0.9865

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.online/app/1094591345/pokemon-go-best-free-outfits-game-hack In PDF document text
- https://www.andrology.co.uk/uploads/files/files/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/how-to-hack-coin-master-game-2021_GM406889139.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/how-to-get-free-robux-on-ipad_GM431946152.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/redeem-roblox-card-free_GM431946152.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/minecraft-windows-10-edition-hacked-client_GM479516143.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/how-to-get-minecraft-for-free-on-chromebook_GM479516143.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/coin-master-hack-android_GM406889139.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/coin-master_GM406889139.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/minecraft-story-mode-free_GM479516143.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/worst-roblox-avatars_GM431946152.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/tiktok-free-view-iphone-video_GM835599320.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/tryrbx-site-free-robux_GM431946152.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/coin-master-spin-hack-no-verification_GM406889139.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/coin-master-coins-free_GM406889139.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/coin-master-free-spins-hack-ios_GM406889139.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/how-to-get-hacks-on-roblox_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_004_off000050d3.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x50D3	24700 bytes
SHA-256: `f05eca2e9d02a63797310b152369d21e5ef5340edd719ec34ab4551c94a7cb24`
`font_01_sfnt_off0000899f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x899F	18424 bytes
SHA-256: `750caa5899ba76c97eec24ed02e361a20283c444388a701a13c3ec79fb49f7c3`

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