PDF malware analysis — malicious · 3074efe805df5273

MALICIOUS

PDF

36.3 KB Created: 2021-06-28 11:43:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24

MD5: b631dbc54a3656d02d1b3af20c5bff1b SHA-1: 34265834cf8dce3420ed8e004c24e302f1af50fc SHA-256: 3074efe805df52738600eaf910b8c3040f547e26664fffa4c87f2a628b9bdff0

220 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous links to external sites, including a known malicious redirector, under the guise of game hacks and free item generators. The document body and heuristics indicate a lure to trick users into clicking these links, likely leading to further malicious content or downloads. No scripts were extracted, but the overall structure and linked content suggest a phishing or malware distribution attempt.

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.co/app/431946152/how-to-get-any-free-catalog-item-in-roblox-zombierule1-game-hack In PDF document text
- https://sf.nationalbreedingcenter.bz/ckfinder/userfiles/files/roblox-free-game-free-to-play_GM431946152.pdfIn PDF document text
- https://sf.nationalbreedingcenter.bz/ckfinder/userfiles/files/be-hacks-to-use-for-no-clipping-in-roblox_GM431946152.pdfIn PDF document text
- https://sf.nationalbreedingcenter.bz/ckfinder/userfiles/files/real-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://sf.nationalbreedingcenter.bz/ckfinder/userfiles/files/roblox-hack-202100-android_GM431946152.pdfIn PDF document text
- https://sf.nationalbreedingcenter.bz/ckfinder/userfiles/files/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
- https://sf.nationalbreedingcenter.bz/ckfinder/userfiles/files/proxo-descargar-roblox-hack-we-are-devs_GM431946152.pdfIn PDF document text
- https://sf.nationalbreedingcenter.bz/ckfinder/userfiles/files/free-robux-hacker-us_GM431946152.pdfIn PDF document text
- https://sf.nationalbreedingcenter.bz/ckfinder/userfiles/files/coin-master-free-spins-and-coins-daily-links_GM406889139.pdfIn PDF document text
- https://sf.nationalbreedingcenter.bz/ckfinder/userfiles/files/buzz-how-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://sf.nationalbreedingcenter.bz/ckfinder/userfiles/files/coin-master-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
- https://sf.nationalbreedingcenter.bz/ckfinder/userfiles/files/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
- https://sf.nationalbreedingcenter.bz/ckfinder/userfiles/files/hack-coin-master-apk-download_GM406889139.pdfIn PDF document text
- https://sf.nationalbreedingcenter.bz/ckfinder/userfiles/files/roblox-cheat-engine_GM431946152.pdfIn PDF document text
- https://sf.nationalbreedingcenter.bz/ckfinder/userfiles/files/free-nonwearedevs-roblox-exploit_GM431946152.pdfIn PDF document text
- https://sf.nationalbreedingcenter.bz/ckfinder/userfiles/files/coin-master-hack-apk-latest-version-2021_GM406889139.pdfIn PDF document text
- https://sf.nationalbreedingcenter.bz/ckfinder/userfiles/files/coin-master-download_GM406889139.pdfIn PDF document text
- https://sf.nationalbreedingcenter.bz/ckfinder/userfiles/files/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
- https://sf.nationalbreedingcenter.bz/ckfinder/userfiles/files/coin-master-free-spin-app-apk_GM406889139.pdfIn PDF document text
- https://sf.nationalbreedingcenter.bz/ckfinder/userfiles/files/lazyblocks-com-robux_GM431946152.pdfIn PDF document text
- https://sf.nationalbreedingcenter.bz/ckfinder/userfiles/files/free-robux-generator-no-download-no-surveys-2021_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_off0000329c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x329C	23044 bytes
SHA-256: `cdd81b13ded6366ce4104f6dfedf14689a2aed5f160f8c04703860ccb43993fd`
`font_01_sfnt_off000066a8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x66A8	19820 bytes
SHA-256: `7c8a322cbee639f6347fbdd482fa009a24e6dbf9b01ed281fec1d4e38160f9f7`

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