PDF malware analysis — malicious · 6a583862e1632e52

MALICIOUS

PDF

28.8 KB Created: 2021-05-10 19:14:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07

MD5: 3822bf6a8c226ddf702b2c4ec1dfaf90 SHA-1: f2dd5996ce6350ffaade188902ab0741b0af6299 SHA-256: 6a583862e1632e52f14c162a84e72e204384bbfd8e18def9c53a59564ea7d440

220 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains numerous links designed to lure users into clicking on potentially malicious content, including a primary redirector for game hacks. The document body and heuristics indicate a scam or phishing attempt leveraging popular game titles to attract clicks. No scripts were extracted, but the embedded URLs and link farm structure are strong indicators of malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 0.9747

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 https://netcdn.xyz/app/431946152/roblox-hacks-for-mac-game-hack In PDF document text
- http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/how-to-get-free-coins-in-minecraft_GM479516143.pdfIn PDF document text
- http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
- http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
- http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/free-minecraft-java-server_GM479516143.pdfIn PDF document text
- http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/daily-free-coin-and-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
- http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/minecraft-wurst_GM479516143.pdfIn PDF document text
- http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/coin-master-hack-tool-no-survey_GM406889139.pdfIn PDF document text
- http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
- http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/coin-master-hack-game_GM406889139.pdfIn PDF document text
- http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/free-modded-minecraft-server-hosting_GM479516143.pdfIn PDF document text
- http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
- http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
- http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/minecraft-servers-that-allow-hacks_GM479516143.pdfIn PDF document text
- http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/i-didnt-get-my-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
- http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/minecraft-apk-114-4_GM479516143.pdfIn PDF document text
- http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
- http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/how-do-i-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
- http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/free-spins-for-coin-master-on-1-19-19_GM406889139.pdfIn PDF document text
- http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/get-minecraft-for-free_GM479516143.pdfIn PDF document text
- http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/op-rewards-free-robux_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_off000023f3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x23F3	19580 bytes
SHA-256: `cf37a5e09c07612bb03ae6fdbd020dd103cfa1cab559a6ae73fb98a34b3e8386`
`font_01_sfnt_off00004d2f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4D2F	18544 bytes
SHA-256: `b54d427420c2b6acb67d73efd488d39bfb4939947f3518d8bf7854551a24b695`

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