PDF malware analysis — malicious · eaccb9426576cc29

MALICIOUS

PDF

36.7 KB Created: 2021-07-08 07:47:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-24

MD5: 48ade9eedbd9fe1730e47e3ac7df90c1 SHA-1: 0a09cbf132508884e38519df3f5937a1ddadc7ee SHA-256: eaccb9426576cc2958deaed3ce8a1fb064eb3ec1b4a2fd46b78f755e64e79a22

260 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document is designed to lure users into clicking links that promise game hacks and free in-game currency. It contains numerous links to known malicious redirectors and SEO link farms, including one pointing to 'netcdn.tw' and others hosted on 'behikeyacht.com'. The document's content and structure strongly suggest it is part of a phishing or scam campaign aimed at driving traffic to malicious sites, potentially for further exploitation or malware delivery.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 6

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.
Invisible PDF links to CAPTCHA-themed web lure high PDF_CAPTCHA_LINK_LURE

PDF contains invisible clickable link annotations that point to a CAPTCHA/capcha-themed web path. This is a common phishing and ClickFix-style routing pattern: the PDF itself is inert, while the linked page performs the credential prompt or fake verification.
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/como-hackear-el-juego-coin-master-en-espaol-game-hack In PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/new-free-items-in-roblox-catalog-2021_GM431946152.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/free-boy-hair-roblox-catalog_GM431946152.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/how-to-get-free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/rtool-pw-roblox-robux-generator-roblox-cheat_GM431946152.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/how-to-get-free-robux-without-doing-anything-2021_GM431946152.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/download-apps-for-robux_GM431946152.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/roblox-how-to-cheat-on-tycoon-games-2021_GM431946152.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/cmo-hackear-el-roblox-para-tener-robux-en-un-mvil_GM431946152.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/free-cruch-skin-for-roblox_GM431946152.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/robux-hacks-using-pastebin_GM431946152.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/free-skip-animation-roblox_GM431946152.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/cheat-rpg-world-roblox-script_GM431946152.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/robux-hack-me_GM431946152.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/roblox-free-for-pc-download_GM431946152.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/roblox-hack-build-your-own-boat-ccv7_GM431946152.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/free-robux-no-captcha-or-human-verification_GM431946152.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/roblox-dll-hack-download_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_002_off0000377b.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x377B	23048 bytes
SHA-256: `229cf1e92212d4076db73706fbeceb967ecaaa34920adc735874dd7d25aa7956`
`font_01_sfnt_off00006b75.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6B75	18820 bytes
SHA-256: `d2b4dc8b32d7c886a2c1e7fdd9f9be23d032c206a795466fd2866170b9314d3e`

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