PDF malware analysis — malicious · 860ecaca0561dca2

MALICIOUS

PDF

33.7 KB Created: 2021-06-22 05:08:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21

MD5: 570c06db829a1ff8f6fecaa430ca2a0d SHA-1: 3885954a96db2d54258c4e58315711d76f4c58fd SHA-256: 860ecaca0561dca2a4601053420092aa85adc590e959b04dc28bf6fdd6305330

220 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains numerous links designed to lure users into downloading potentially malicious files or visiting scam websites, disguised as game hacks and generators. The heuristic firings indicate the presence of malicious redirectors and a link farm, suggesting a phishing or scam campaign. Although no scripts were explicitly extracted, the document body and heuristics point towards a social engineering attack.

Machine Learning

Nyx PDF Classifier malicious score 0.9824

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.co/app/431946152/free-robux-kazok-only-game-hack In PDF document text
- http://www.espaciocultivarte.com/ckfinder/userfiles/files/coin-master-real-hack_GM406889139.pdfIn PDF document text
- http://www.espaciocultivarte.com/ckfinder/userfiles/files/free-robux-card-codes_GM431946152.pdfIn PDF document text
- http://www.espaciocultivarte.com/ckfinder/userfiles/files/master-8-ball-pool-free-coins_GM406889139.pdfIn PDF document text
- http://www.espaciocultivarte.com/ckfinder/userfiles/files/boku-no-roblox-remastered-lv-up-hack_GM431946152.pdfIn PDF document text
- http://www.espaciocultivarte.com/ckfinder/userfiles/files/coin-master-daily-gift-free-spins-and-coins-link-today_GM406889139.pdfIn PDF document text
- http://www.espaciocultivarte.com/ckfinder/userfiles/files/minecraft-pe-016-0-apk-download-free_GM479516143.pdfIn PDF document text
- http://www.espaciocultivarte.com/ckfinder/userfiles/files/what-tiktok-free-folowers-without-downloading-any-apps_GM835599320.pdfIn PDF document text
- http://www.espaciocultivarte.com/ckfinder/userfiles/files/how-to-hack-coin-master-root_GM406889139.pdfIn PDF document text
- http://www.espaciocultivarte.com/ckfinder/userfiles/files/coin-master-free-coins-twitter_GM406889139.pdfIn PDF document text
- http://www.espaciocultivarte.com/ckfinder/userfiles/files/get-free-spins-on-coin-master-links_GM406889139.pdfIn PDF document text
- http://www.espaciocultivarte.com/ckfinder/userfiles/files/minecraft-windows-10-edition-unlock-full-game-free_GM479516143.pdfIn PDF document text
- http://www.espaciocultivarte.com/ckfinder/userfiles/files/roblox-tablet-hack_GM431946152.pdfIn PDF document text
- http://www.espaciocultivarte.com/ckfinder/userfiles/files/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
- http://www.espaciocultivarte.com/ckfinder/userfiles/files/get-100-free-robux_GM431946152.pdfIn PDF document text
- http://www.espaciocultivarte.com/ckfinder/userfiles/files/games-to-get-free-robux_GM431946152.pdfIn PDF document text
- http://www.espaciocultivarte.com/ckfinder/userfiles/files/minecraft-dungeons-download-free_GM479516143.pdfIn PDF document text
- http://www.espaciocultivarte.com/ckfinder/userfiles/files/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
- http://www.espaciocultivarte.com/ckfinder/userfiles/files/free-roblox-injector_GM431946152.pdfIn PDF document text
- http://www.espaciocultivarte.com/ckfinder/userfiles/files/card-hack-in-coin-master_GM406889139.pdfIn PDF document text
- http://www.espaciocultivarte.com/ckfinder/userfiles/files/free-roblox-clothes-for-your-avatar_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_off00002cb4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2CB4	22552 bytes
SHA-256: `aca2a67ae7bf67b864f9b90fd3c981028a1e50b4538975285198f405833b522e`
`font_01_sfnt_off00005e92.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5E92	19224 bytes
SHA-256: `d0b04cf33678cc7c9016cf83e4fa818d669180d1a3964b79149ca076a70d10ab`

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