PDF malware analysis — malicious · 0c386cd1374efa0a

MALICIOUS

PDF

49.7 KB Created: 2021-06-13 18:37:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17

MD5: e35c81fc25cce7e015978d2a63344a6b SHA-1: 4cca085b8c034ebe0a659152b71785d354efd29a SHA-256: 0c386cd1374efa0a3ff3871fa7c1812846a72bf78f1e7f550e7aa5f6b17158e4

142 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains numerous links designed to lure users into clicking on them by promising free game-related content. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, many of which are structured as SEO-friendly URLs pointing to game-related topics. The primary URL, http://netcdn.co/app/431946152/how-to-become-a-builders-club-on-roblox-for-free-game-hack, further reinforces this lure. While no scripts were explicitly extracted, the nature of the links suggests a phishing or scam campaign, likely leading to malicious websites.

Machine Learning

Nyx PDF Classifier malicious score 0.8642

Heuristics 5

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.
PDF links to a 'free generator / game hack' redirector high 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.
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
External URI info PDF_URI

PDF contains an external URL action
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-become-a-builders-club-on-roblox-for-free-game-hack PDF link annotation
- http://aviaprofsoyuz.info/images/free-spins-coin-master-android_GM406889139.pdfIn PDF document text
- http://aviaprofsoyuz.info/images/cheat-argent-sur-roblox-vehicle-simulator_GM431946152.pdfIn PDF document text
- http://aviaprofsoyuz.info/images/roblox-devil_GM431946152.pdfIn PDF document text
- http://aviaprofsoyuz.info/images/minecraft-games-online-free-no-download_GM479516143.pdfIn PDF document text
- http://aviaprofsoyuz.info/images/master-coin-free-spin-daily_GM406889139.pdfIn PDF document text
- http://aviaprofsoyuz.info/images/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
- http://aviaprofsoyuz.info/images/how-to-make-your-own-minecraft-server-for-free_GM479516143.pdfIn PDF document text
- http://aviaprofsoyuz.info/images/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
- http://aviaprofsoyuz.info/images/gift-roblox-com-free_GM431946152.pdfIn PDF document text
- http://aviaprofsoyuz.info/images/free-robux-no-human-verification-2021-or-survey-no-scam_GM431946152.pdfIn PDF document text
- http://aviaprofsoyuz.info/images/mcpe-master-hack-coin-apk_GM406889139.pdfIn PDF document text
- http://aviaprofsoyuz.info/images/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
- http://aviaprofsoyuz.info/images/roblox-2021_GM431946152.pdfIn PDF document text
- http://aviaprofsoyuz.info/images/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
- http://aviaprofsoyuz.info/images/free-robux-glitch-2021_GM431946152.pdfIn PDF document text
- http://aviaprofsoyuz.info/images/star-roblox-mad-city-hack_GM431946152.pdfIn PDF document text
- http://aviaprofsoyuz.info/images/free-robux-glitch_GM431946152.pdfIn PDF document text
- http://aviaprofsoyuz.info/images/inappropriate-roblox-games-2021_GM431946152.pdfIn PDF document text
- http://aviaprofsoyuz.info/images/free-robux-mod_GM431946152.pdfIn PDF document text
- http://aviaprofsoyuz.info/images/grow-robux-hack_GM431946152.pdfIn PDF document text
- http://wolfzscriptsIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00004c20.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4C20	26284 bytes
SHA-256: `5b57fb91b0134ddfb81faa08cc5dba942ddd0d8e5ab145a2cc93d908e406e00e`
`font_01_sfnt_off0000888d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x888D	3104 bytes
SHA-256: `353b86768469fabedf3fdeb61c0849ea59fec6198b6eb1b588a22e096f7d6bb6`
`font_02_sfnt_off0000933a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x933A	3120 bytes
SHA-256: `49734f51977507cba6bc8d3ad0cee0363aa119856db094427deb9cf565bb7bca`
`font_03_sfnt_off00009e4e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9E4E	18808 bytes
SHA-256: `82534ece940ce121f5857afb30589f741fa27b1339837285246455d31c48ecca`

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