PDF malware analysis — malicious · d7e3afa833565f63

MALICIOUS

PDF

38.8 KB Created: 2021-06-28 01:24:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23

MD5: bddd9ad5fa9c4e88a4bbcb2ff67a0d6c SHA-1: 313ad93bf2a9530919598f568761587f61d1e976 SHA-256: d7e3afa833565f639bab25e8d1583cbd8f17c804a170e9f8d96094b6f80b6a5b

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free generators'. The primary lure is a link to 'netcdn.co', which is flagged as a malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to trick users into visiting potentially harmful sites, likely for further malware delivery or phishing. The document body text reinforces this lure by mentioning 'free umbrella in camping roblox game hack'.

Machine Learning

Nyx PDF Classifier malicious score 0.9985

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.co/app/431946152/how-to-get-a-free-umbrella-in-camping-roblox-game-hack In PDF document text
- http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/roblox-games-with-free-radio_GM431946152.pdfIn PDF document text
- http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/info-roblox-com-robux_GM431946152.pdfIn PDF document text
- http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
- http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
- http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
- http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/hack-de-roblox-admin-descargar_GM431946152.pdfIn PDF document text
- http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/fotos-de-hacker-en-roblox_GM431946152.pdfIn PDF document text
- http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/roblox-old-avatar_GM431946152.pdfIn PDF document text
- http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
- http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
- http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/free-robux-apk-mod_GM431946152.pdfIn PDF document text
- http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/free-robux-com-roblox_GM431946152.pdfIn PDF document text
- http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
- http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/coin-master-free-pet-food-links_GM406889139.pdfIn PDF document text
- http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
- http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/how-to-get-robux-on-roblox-for-free-2021_GM431946152.pdfIn PDF document text
- http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/free-robux-videos_GM431946152.pdfIn PDF document text
- http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/minecraft-free_GM479516143.pdfIn PDF document text
- http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/easy-robux-today-com_GM431946152.pdfIn PDF document text
- http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/get-more-robux_GM431946152.pdfIn PDF document text
- https://www.roblox.com/.IIn 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_off00003e2d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3E2D	23052 bytes
SHA-256: `2b217fec495396f43a930935cefa3d57fbc096bb21fae4b0bd56c50bd615a9e4`
`font_01_sfnt_off000071e6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x71E6	19472 bytes
SHA-256: `d244f8e59f5d5dd227888069a41f4f9532187b4b156dceb53fc0314ab22e6c0e`

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