PDF malware analysis — malicious · 33a043473bbd476b

MALICIOUS

PDF

44.0 KB Created: 2021-05-15 00:01:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: 996e981213bff9cf9af047a85c57a6e7 SHA-1: 509d30911ceb16128e751318ddae91c18766dd6f SHA-256: 33a043473bbd476b2fcb50f4a546d0dd84ebd256da4e35b5f5d6253f7b212b52

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, disguised as offers for free game currency or hacks. The primary link directs to a site promising Minecraft redeem codes, which is a common lure for phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

Nyx PDF Classifier malicious score 0.9969

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/479516143/minecraft-redeem-code-free-2021-game-hack In PDF document text
- https://thoisuviet.vn/public/ckfinder/userfiles/files/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
- https://thoisuviet.vn/public/ckfinder/userfiles/files/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
- https://thoisuviet.vn/public/ckfinder/userfiles/files/coin-master-hack-to-get-free-spins_GM406889139.pdfIn PDF document text
- https://thoisuviet.vn/public/ckfinder/userfiles/files/free-robux-pastebin_GM431946152.pdfIn PDF document text
- https://thoisuviet.vn/public/ckfinder/userfiles/files/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
- https://thoisuviet.vn/public/ckfinder/userfiles/files/wurst-hacked-client-112-2_GM479516143.pdfIn PDF document text
- https://thoisuviet.vn/public/ckfinder/userfiles/files/sb-game-hacker-coin-master_GM406889139.pdfIn PDF document text
- https://thoisuviet.vn/public/ckfinder/userfiles/files/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
- https://thoisuviet.vn/public/ckfinder/userfiles/files/minecraft-free-online-games_GM479516143.pdfIn PDF document text
- https://thoisuviet.vn/public/ckfinder/userfiles/files/coin-master-free-spin-link-today-16-11-2021_GM406889139.pdfIn PDF document text
- https://thoisuviet.vn/public/ckfinder/userfiles/files/robux-hack-free-robux_GM431946152.pdfIn PDF document text
- https://thoisuviet.vn/public/ckfinder/userfiles/files/free-robux-offers_GM431946152.pdfIn PDF document text
- https://thoisuviet.vn/public/ckfinder/userfiles/files/free-minecraft-accounts-reddit_GM479516143.pdfIn PDF document text
- https://thoisuviet.vn/public/ckfinder/userfiles/files/get-coin-master-free-spin_GM406889139.pdfIn PDF document text
- https://thoisuviet.vn/public/ckfinder/userfiles/files/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
- https://thoisuviet.vn/public/ckfinder/userfiles/files/daily-free-spin-and-coin_GM406889139.pdfIn PDF document text
- https://thoisuviet.vn/public/ckfinder/userfiles/files/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
- https://thoisuviet.vn/public/ckfinder/userfiles/files/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
- https://thoisuviet.vn/public/ckfinder/userfiles/files/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://thoisuviet.vn/public/ckfinder/userfiles/files/how-to-get-free-chest-in-coin-master_GM406889139.pdfIn PDF document text
- http://www.freenom.comHeyIn 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_off00004cb9.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4CB9	26644 bytes
SHA-256: `59e361b006394800d236c3bc59ae24ef90671891d122a479b5f616d9191321e9`
`font_01_sfnt_off0000890c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x890C	18544 bytes
SHA-256: `611277ce03819488b0455d760a99d29b8e1d6f4ae34c09b91ed543aef68bda35`

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