PDF malware analysis — malicious · d62851cf35516527

MALICIOUS

PDF

44.1 KB Created: 2021-06-03 07:45:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24

MD5: 88407899734cb14463032a8f0d6b5ab6 SHA-1: 5b60c84fd69ea0c503e51ee87658e1c967477814 SHA-256: d62851cf35516527414684682255bfb7b352ceb0bd9b9e2284b813a920406a06

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to a website offering 'free generators' and 'game hacks', specifically mentioning Minecraft. This lure, combined with the 'SE_DOWNLOAD_BUTTON' heuristic, suggests an attempt to trick users into visiting a malicious site. The ML classifier also flagged this PDF as malicious. No scripts were extracted, but the primary IOC is the redirector URL.

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/479516143/minecraft-java-hacks-game-hack In PDF document text
- https://www.nara.org.uk/uploads/files/files/roblox-script-executor-free_GM431946152.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/how-to-hack-coin-master-with-game-guardian_GM406889139.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/robux-free-online_GM431946152.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/actual-free-robux_GM431946152.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/free-tiktok-fans-and-likes_GM835599320.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/roblox-premium-free_GM431946152.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/haktuts-coin-master-hack_GM406889139.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/spin-coin-master-free_GM406889139.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/coin-master-hack-android-root_GM406889139.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/i-need-more-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/free-spin-coin-master-today_GM406889139.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/coin-master-tiradas-gratis-link_GM406889139.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/oprewards-com-robux_GM431946152.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/how-you-get-robux_GM431946152.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/www-roblox-com-robux-free_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_off0000543e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x543E	24220 bytes
SHA-256: `7de3e17d990a9015def858070aae26eff6d86440dc618efeafcdceb663962269`
`font_01_sfnt_off00008a88.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8A88	18020 bytes
SHA-256: `2aa5f75731ce228eb108c5d7ba78fcf9c19ee4c9e640e1738d5748e499ff9746`

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