PDF malware analysis — malicious · f7da3bc093a4be68

MALICIOUS

PDF

36.7 KB Created: 2021-07-08 10:33:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31

MD5: d4f6f85c17fd40719f83ab74e33705a4 SHA-1: 9e3fd23be319fd44b46425f45cef9302d57736a2 SHA-256: f7da3bc093a4be6825316eb70fd2630cfd2c3f7745c6f0704371e94eba63467f

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF file contains a lure for a 'free generator / game hack' which redirects to a known malicious infrastructure. The document body and embedded URLs reinforce this theme, suggesting a phishing or scam attempt to trick users into visiting a potentially harmful site. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/pop-slots-free-vegas-casino-slot-machine-game-coin-master-game-hack In PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/coin-master-apk-free-download_GM406889139.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/roblox-apocalypse-rising-hack-2021_GM431946152.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/roblox-cheat-engine-murder-mystery-2_GM431946152.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/woman-roblox_GM431946152.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/master-hack-coin_GM406889139.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/how-to-get-free-coins-on-coin-master-hack_GM406889139.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/free-followers-no-human-verification-roblox_GM431946152.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/make-free-robux_GM431946152.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/site-17-hack-roblox_GM431946152.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/comment-avoir-un-dominus-aureus-free-ssur-roblox_GM431946152.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/free-robux-hack-that-really-really-actually-works_GM431946152.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/free-promo-codes-roblox_GM431946152.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/nisterv-free-robux-hack_GM431946152.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/how-to-get-free-robux-on-iphone_GM431946152.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/free-robux-websites-2021_GM431946152.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/roblox-color-name-hack-pastebin_GM431946152.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/free-spin-link-of-coin-master_GM406889139.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/try-minecraft-free_GM479516143.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_off0000362e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x362E	23320 bytes
SHA-256: `a1e3c91eb4b98ccf039b5f02832cd1f01813a619206110713601d4b024c09ed9`
`font_01_sfnt_off00006b07.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6B07	18960 bytes
SHA-256: `fcfab0c91ed1324c39762b25fc59b919b6ba18841eb4e4fccfc59f918c2483ed`

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