PDF malware analysis — malicious · 471b41316dfeef53

MALICIOUS

PDF

36.9 KB Created: 2021-06-30 08:14:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23

MD5: cffce6a7898ce1a027e14f37005c2d52 SHA-1: 3087dbfab8de055a7bca87c9e93b0ae1eba4baf7 SHA-256: 471b41316dfeef53e0252b3c67d2e0e81ae15707dcd3215300692d00c87440bd

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a lure for free game currency and hacks, directing users to a known malicious redirector. The embedded link is designed to trick users into visiting potentially harmful websites. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or redirection attempt.

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.co/app/431946152/free-robux-no-verification-no-survey-2021-game-hack In PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/coin-master-free-100-spin_GM406889139.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/juego-hackeado-de-coin-master_GM406889139.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/free-followers-on-tiktok_GM835599320.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/how-to-get-free-followers-on-roblox_GM431946152.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/how-do-you-get-robux_GM431946152.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/free-admin-hack-for-roblox_GM431946152.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/how-to-get-free-robux-2-steps_GM431946152.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/claim-gg-free-robux_GM431946152.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/pokemon-go-free-revives_GM1094591345.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/roblox-games-with-free-radio_GM431946152.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/free-robux-offers_GM431946152.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/robuxglobalcom_GM431946152.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/coin-master-daily-spin-link-app_GM406889139.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/cheat-roblox-2021-la-dernire-mise--jour_GM431946152.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/how-to-use-redeemed-cards-on-roblox-no-hacks_GM431946152.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/get-roblox-for-free_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
`font_00_sfnt_off000036e4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x36E4	22444 bytes
SHA-256: `8a51a87a604bccc6f3fb81e8e8676f9f414b9c4f17d5fea927266db9774755f6`
`font_01_sfnt_off0000692b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x692B	19772 bytes
SHA-256: `3c2876b6886d4646a8f11255fddca723ec69d349e638f6a660492f96f9b721cd`

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