PDF malware analysis — malicious · 835d524ebeb65578

MALICIOUS

PDF

41.7 KB Created: 2021-04-25 18:22:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: 853017784b7d0b471c45b0c9f8b83a2b SHA-1: 7b10d830a26621474d62acbfbb669c9f8253a49d SHA-256: 835d524ebeb65578e4ca15aca4e8962718419082e036ff40deb68bb8e9bca06d

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains multiple links to external websites, with one specifically identified as a malicious redirector for 'free generator / game hack' lures. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lures suggest an attempt to redirect the user to a site that likely hosts further malicious content or exploits.

Machine Learning

Nyx PDF Classifier malicious score 0.9941

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 https://netcdn.xyz/app/431946152/clothing-making-software-free-roblox-game-hack In PDF document text
- https://lib.stie-yai.ac.id/repository/cheats-for-murder-mystery-2-roblox.pdfIn PDF document text
- https://lib.stie-yai.ac.id/repository/roblox-free-roblox-cards.pdfIn PDF document text
- https://lib.stie-yai.ac.id/repository/roblox-prison-life-hacks-2021.pdfIn PDF document text
- https://lib.stie-yai.ac.id/repository/roblox-wall-hack-for-mac.pdfIn PDF document text
- https://lib.stie-yai.ac.id/repository/roblox-hack-no-downloading-apps.pdfIn PDF document text
- https://lib.stie-yai.ac.id/repository/roblox-royalty-free-music.pdfIn PDF document text
- https://lib.stie-yai.ac.id/repository/robux-hack-no-download-or-verification.pdfIn PDF document text
- https://lib.stie-yai.ac.id/repository/hoops-hack-roblox.pdfIn PDF document text
- https://lib.stie-yai.ac.id/repository/how-to-sell-roblox-shirts-for-free.pdfIn PDF document text
- https://lib.stie-yai.ac.id/repository/como-hacer-hacker-en-roblox-jailbreak-2021.pdfIn PDF document text
- https://freerobux.cyouIn 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
`stream_003_off000042be.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x42BE	25712 bytes
SHA-256: `a4f0ac2f7455b98412d504107401bd52771e30761448817a3688cc604ce1b475`
`font_01_sfnt_off00007df6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7DF6	19384 bytes
SHA-256: `7fe3c2eab8762ec59244725f3a7506cd6c7c73ab2114fc2874167bfaa58204e3`

Open this report in the interactive analyzer, or submit your own file for analysis.