PDF malware analysis — malicious · 9eb43abeff4f3dc5

MALICIOUS

PDF

34.7 KB Created: 2021-07-04 17:10:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24

MD5: c9cc00d97640aa50a634c92f6d7eb54a SHA-1: 966fc6d10e8fcf01827d0adc80431afde94f2e78 SHA-256: 9eb43abeff4f3dc5f1ba56595f6e0c707b86f0d93932f590b07ed8204bfff1e8

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to a known malicious domain, masquerading as a 'free generator / game hack'. The presence of these links and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content. No scripts were extracted, but the document's structure and embedded URLs strongly suggest a phishing or social engineering lure.

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/431946152/free-premium-roblox-game-hack In PDF document text
- https://www.multilandtours.com/assets/ckfinder/userfiles/files/atticus129-roblox-hacked-image_GM431946152.pdfIn PDF document text
- https://www.multilandtours.com/assets/ckfinder/userfiles/files/speed-hack-roblox-prison-life_GM431946152.pdfIn PDF document text
- https://www.multilandtours.com/assets/ckfinder/userfiles/files/roblox-da-hood-hack-or-glitch_GM431946152.pdfIn PDF document text
- https://www.multilandtours.com/assets/ckfinder/userfiles/files/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
- https://www.multilandtours.com/assets/ckfinder/userfiles/files/roblox-svg-free_GM431946152.pdfIn PDF document text
- https://www.multilandtours.com/assets/ckfinder/userfiles/files/coin-master-golden-card-hack_GM406889139.pdfIn PDF document text
- https://www.multilandtours.com/assets/ckfinder/userfiles/files/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
- https://www.multilandtours.com/assets/ckfinder/userfiles/files/medieval-warfare-roblox-hack_GM431946152.pdfIn PDF document text
- https://www.multilandtours.com/assets/ckfinder/userfiles/files/turk-hack-roblox_GM431946152.pdfIn PDF document text
- https://www.multilandtours.com/assets/ckfinder/userfiles/files/anti-hack-plugin-roblox_GM431946152.pdfIn PDF document text
- https://www.multilandtours.com/assets/ckfinder/userfiles/files/how-to-get-free-outfits-on-roblox_GM431946152.pdfIn PDF document text
- https://www.multilandtours.com/assets/ckfinder/userfiles/files/how-to-get-free-coins-on-coin-master-hack_GM406889139.pdfIn PDF document text
- https://www.multilandtours.com/assets/ckfinder/userfiles/files/coinmasterdailyfreespins-com_GM406889139.pdfIn PDF document text
- https://www.multilandtours.com/assets/ckfinder/userfiles/files/cheat-bar-codes-for-roblox_GM431946152.pdfIn PDF document text
- https://www.multilandtours.com/assets/ckfinder/userfiles/files/coin-master-free-gold-cards-link-2021_GM406889139.pdfIn PDF document text
- https://www.multilandtours.com/assets/ckfinder/userfiles/files/how-to-get-a-free-minecraft-server_GM479516143.pdfIn PDF document text
- https://www.multilandtours.com/assets/ckfinder/userfiles/files/fast-food-tycoon-free-roblox_GM431946152.pdfIn PDF document text
- https://www.multilandtours.com/assets/ckfinder/userfiles/files/free-robux-app-2021_GM431946152.pdfIn PDF document text
- https://www.multilandtours.com/assets/ckfinder/userfiles/files/get-free-roblox-by-playi_GM431946152.pdfIn PDF document text
- https://www.multilandtours.com/assets/ckfinder/userfiles/files/minecraft-hacked-client-download_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_off000031e5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x31E5	21804 bytes
SHA-256: `8a2211c3d39674cb9c34a756be03e4290ac6f310e103d33a6c7bd615d1e749ce`
`font_01_sfnt_off000061e9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x61E9	19324 bytes
SHA-256: `bffeb858734709d9e626e1cf7762beb37c79d024cf91ee5740b88d17242ac5df`

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