PDF malware analysis — malicious · ae04b0a32a6c8c63

MALICIOUS

PDF

34.7 KB Created: 2021-07-04 13:47:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31

MD5: 8a15a7253202da2d1bffd067ee14fa26 SHA-1: e1db28c7acec5d73a5eb19a61ba22b6352c2a4d5 SHA-256: ae04b0a32a6c8c63f3b36cb0471b7de6a810a1da7c481f39a2c95151289a54ad

220 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains numerous links, including one to a known malicious redirector at http://netcdn.tw/app/431946152/roblox-download-pc-free-game-hack. The document body and heuristics indicate a lure for game hacks or generators, aiming to redirect users to potentially harmful content. The presence of many external links suggests a link farm or SEO manipulation tactic to distribute malicious content.

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/431946152/roblox-download-pc-free-game-hack In PDF document text
- https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/free-roblox-codes_GM431946152.pdfIn PDF document text
- https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/how-to-hack-accounts-in-roblox-2021_GM431946152.pdfIn PDF document text
- https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/how-to-hack-mcpe-master-coins_GM406889139.pdfIn PDF document text
- https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/20-free-spin-link-coin-master_GM406889139.pdfIn PDF document text
- https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/how-to-make-a-minecraft-server-for-free-java_GM479516143.pdfIn PDF document text
- https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/free-griffin-code-roblox-adopt_GM431946152.pdfIn PDF document text
- https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/quelle-est-ladresse-des-robux-dans-roblox-cheat-engine_GM431946152.pdfIn PDF document text
- https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-for-free_GM431946152.pdfIn PDF document text
- https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/sites-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/roblox-shirt-template-png-free-shipping_GM431946152.pdfIn PDF document text
- https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/roblox-got-talent-piano-hack_GM431946152.pdfIn PDF document text
- https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/roblox-jojo-project-cheat_GM431946152.pdfIn PDF document text
- https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-outfits-on-roblox_GM431946152.pdfIn PDF document text
- https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/best-site-for-free-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-stuff-in-roblox-2021_GM431946152.pdfIn PDF document text
- https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-link-today-instagram_GM406889139.pdfIn PDF document text
- https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/free-robux-generator-xyz_GM431946152.pdfIn PDF document text
- https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/bebe-rexha-i-got-you-cheat-codes-remix-roblox-id_GM431946152.pdfIn PDF document text
- https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/how-to-hack-roblox-for-robux-and-tix_GM431946152.pdfIn PDF document text
- https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/level-coin_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_off00002fb5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2FB5	22472 bytes
SHA-256: `11d689ef55c7b98dcb20c691d955f3bff29f2ebe1410cff9b9c038f24607e5ed`
`font_01_sfnt_off000061f8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x61F8	19312 bytes
SHA-256: `4dfa4cd970ae8ba9d91d623e29f1e83580b49f16940f1f8efb61f1783af6fc8c`

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