PDF malware analysis — malicious · 17fb953f6d69f025

MALICIOUS

PDF

36.4 KB Created: 2021-07-04 17:54:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13

MD5: 25637d044cd6dd25c1241d46450ebb45 SHA-1: 6a386f80eaa96d7b3c3979595ce33ffb88e6adf8 SHA-256: 17fb953f6d69f0256c1bab1cc84a381a840b99a035b98a06030f4264fa8e1b74

220 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains numerous links designed to lure users into clicking on what appear to be game hacks or account generators. The primary redirector URL, http://netcdn.tw/app/406889139/https-iosgodscom-topic-20218flipmastercoinshack-game-hack, is flagged as malicious. The document body and embedded links suggest a phishing or scam attempt leveraging popular game-related lures. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/https-iosgodscom-topic-20218flipmastercoinshack-game-hack In PDF document text
- http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
- http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
- http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
- http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/coin-master-attack-block-hack_GM406889139.pdfIn PDF document text
- http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/coin-master-hack-unlimited-spins-game-download_GM406889139.pdfIn PDF document text
- http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/hack-coin-master-apk-mod_GM406889139.pdfIn PDF document text
- http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
- http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
- http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/coin-master-free-coins-spins_GM406889139.pdfIn PDF document text
- http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/script-cheat-for-roblox_GM431946152.pdfIn PDF document text
- http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/2021-roblox_GM431946152.pdfIn PDF document text
- http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
- http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/tampermonkey-robux-hack-that-works_GM431946152.pdfIn PDF document text
- http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/free-robux-com-uk_GM431946152.pdfIn PDF document text
- http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/free-admin-house-roblox_GM431946152.pdfIn PDF document text
- http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/give-free-robux_GM431946152.pdfIn PDF document text
- http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/minecraft-pe-hack-client-2021_GM479516143.pdfIn PDF document text
- http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/roblox-bloxburg-tips-and-cheats_GM431946152.pdfIn PDF document text
- http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/free-coin-master-spins-for-today_GM406889139.pdfIn PDF document text
- http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/coin-master-free-spin-link-app_GM406889139.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_off00003431.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3431	22996 bytes
SHA-256: `79fe10e92da6f3bf0c2bbddfa5197187b9c63d846dbb9785a5261ca49cb603c1`
`font_01_sfnt_off000067b9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x67B9	19628 bytes
SHA-256: `ddef5dcbd34287e7c11d57da792f40b0674e615bb4601f5eb3c68c5e32a24415`

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