PDF malware analysis — malicious · 303e1592ab5617f7

MALICIOUS

PDF

43.0 KB Created: 2021-05-17 17:31:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26

MD5: 9630e14f8fd823ebd937913dc362babd SHA-1: 2b4c696db2c1982a8c16043fcaf00f3bb74934f9 SHA-256: 303e1592ab5617f77ca14cca62dcb270e06bff6e61c33f75fca2b10d3ec1c0b2

220 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document is designed as a lure, employing a "free generator / game hack" theme to trick users into clicking embedded links. The document contains a mass of external PDF links, many of which point to scam-related content like "free robux" or "coin master hack". The presence of a "download button" heuristic further supports the deceptive nature of the document, aiming to facilitate initial access via social engineering.

Machine Learning

Nyx PDF Classifier malicious score 0.9971

Heuristics 5

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.
Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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/406889139/daily-free-spin-coin-master-link-game-hack In PDF document text
- https://brooklandsfarmchildren.co.uk/admin/ckfinder/userfiles/files/free-robux-scam_GM431946152.pdfIn PDF document text
- https://brooklandsfarmchildren.co.uk/admin/ckfinder/userfiles/files/oprewards-login_GM431946152.pdfIn PDF document text
- https://brooklandsfarmchildren.co.uk/admin/ckfinder/userfiles/files/how-to-download-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
- https://brooklandsfarmchildren.co.uk/admin/ckfinder/userfiles/files/best-free-minecraft-server-hosting-reddit_GM479516143.pdfIn PDF document text
- https://brooklandsfarmchildren.co.uk/admin/ckfinder/userfiles/files/free-promo-codes-for-robux_GM431946152.pdfIn PDF document text
- https://brooklandsfarmchildren.co.uk/admin/ckfinder/userfiles/files/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
- https://brooklandsfarmchildren.co.uk/admin/ckfinder/userfiles/files/coin-master-hack-download-ios_GM406889139.pdfIn PDF document text
- https://brooklandsfarmchildren.co.uk/admin/ckfinder/userfiles/files/how-to-get-free-robux-no-scam_GM431946152.pdfIn PDF document text
- https://brooklandsfarmchildren.co.uk/admin/ckfinder/userfiles/files/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
- https://brooklandsfarmchildren.co.uk/admin/ckfinder/userfiles/files/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://brooklandsfarmchildren.co.uk/admin/ckfinder/userfiles/files/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
- https://brooklandsfarmchildren.co.uk/admin/ckfinder/userfiles/files/easy-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://brooklandsfarmchildren.co.uk/admin/ckfinder/userfiles/files/free-minecraft-pe-server_GM479516143.pdfIn PDF document text
- https://brooklandsfarmchildren.co.uk/admin/ckfinder/userfiles/files/coin-master-free-gold_GM406889139.pdfIn PDF document text
- https://brooklandsfarmchildren.co.uk/admin/ckfinder/userfiles/files/scary-larry-roblox_GM431946152.pdfIn PDF document text
- https://brooklandsfarmchildren.co.uk/admin/ckfinder/userfiles/files/coin-master-hack-spins-android_GM406889139.pdfIn PDF document text
- https://brooklandsfarmchildren.co.uk/admin/ckfinder/userfiles/files/free-coin-spin_GM406889139.pdfIn PDF document text
- https://brooklandsfarmchildren.co.uk/admin/ckfinder/userfiles/files/buy-robux-free_GM431946152.pdfIn PDF document text
- https://brooklandsfarmchildren.co.uk/admin/ckfinder/userfiles/files/coin-master-free-spin-best-link_GM406889139.pdfIn PDF document text
- https://brooklandsfarmchildren.co.uk/admin/ckfinder/userfiles/files/robux-page_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_off00004cc1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4CC1	24556 bytes
SHA-256: `4930b8d6bdb2acc1d7be14e7256aad42d4968ea9fe5c513dd00c1cbc103f688d`
`font_01_sfnt_off00008514.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8514	18476 bytes
SHA-256: `13087f23ced5a654764a402ace47e06b7ceeb886891228a443e0cb07dd9c4176`

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