PDF malware analysis — malicious · c0b0d0475a30923c

MALICIOUS

PDF

49.5 KB Created: 2021-05-31 16:52:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: 0339ed1ad8c481835a81aef177203edd SHA-1: eb21c3e786e065018465bbf5afd07a94763aa247 SHA-256: c0b0d0475a30923ca035f9a8586bbe660ae5bb5734298737db7a59439e8678f2

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a lure for free game hacks and currency, directing users to a malicious URL. This URL is flagged as a known malicious redirector, indicating a probable attempt to deliver a second-stage payload or phish for credentials. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

Nyx PDF Classifier malicious score 0.9796

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/roblox-free-accawt-game-hack In PDF document text
- https://digitalknowledge.pl/wp-content/uploads/fsqm-files/minecraft-mobile-free_GM479516143.pdfIn PDF document text
- https://digitalknowledge.pl/wp-content/uploads/fsqm-files/minecraft-free-unblocked_GM479516143.pdfIn PDF document text
- https://digitalknowledge.pl/wp-content/uploads/fsqm-files/tiktok-minecraft-hacks_GM479516143.pdfIn PDF document text
- https://digitalknowledge.pl/wp-content/uploads/fsqm-files/how-to-get-free-tiktok-fans_GM835599320.pdfIn PDF document text
- https://digitalknowledge.pl/wp-content/uploads/fsqm-files/free-robux-promo-codes_GM431946152.pdfIn PDF document text
- https://digitalknowledge.pl/wp-content/uploads/fsqm-files/roblox-speed-hack_GM431946152.pdfIn PDF document text
- https://digitalknowledge.pl/wp-content/uploads/fsqm-files/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
- https://digitalknowledge.pl/wp-content/uploads/fsqm-files/minecraft-online-free-download_GM479516143.pdfIn PDF document text
- https://digitalknowledge.pl/wp-content/uploads/fsqm-files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
- https://digitalknowledge.pl/wp-content/uploads/fsqm-files/how-to-get-verified-on-tiktok-for-free_GM835599320.pdfIn PDF document text
- https://digitalknowledge.pl/wp-content/uploads/fsqm-files/free-minecraft-account-generator_GM479516143.pdfIn PDF document text
- https://digitalknowledge.pl/wp-content/uploads/fsqm-files/how-to-get-free-robux-on-ipad_GM431946152.pdfIn PDF document text
- https://digitalknowledge.pl/wp-content/uploads/fsqm-files/get-free-tiktok-likes_GM835599320.pdfIn PDF document text
- https://digitalknowledge.pl/wp-content/uploads/fsqm-files/coin-master-free-coins-link_GM406889139.pdfIn PDF document text
- https://digitalknowledge.pl/wp-content/uploads/fsqm-files/free-coin-master-links_GM406889139.pdfIn PDF document text
- https://digitalknowledge.pl/wp-content/uploads/fsqm-files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
- https://digitalknowledge.pl/wp-content/uploads/fsqm-files/roblox-hack-cilent-2021_GM431946152.pdfIn PDF document text
- https://digitalknowledge.pl/wp-content/uploads/fsqm-files/minecraft-free-android_GM479516143.pdfIn PDF document text
- https://digitalknowledge.pl/wp-content/uploads/fsqm-files/free-minecraft-server-hosting-24-7_GM479516143.pdfIn PDF document text
- https://digitalknowledge.pl/wp-content/uploads/fsqm-files/downlaod-fly-cheat-roblox_GM431946152.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off00005102.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5102	27732 bytes
SHA-256: `6186b134dd8715914f210949dac273576848682cb19d313df46fc126a0783f94`
`font_01_sfnt_off00009410.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9410	2940 bytes
SHA-256: `eb230542719c96b42e3fd8bb01e35f13ebd5f02629049da3a58e7fd7607bf48a`
`font_02_sfnt_off00009e20.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9E20	18444 bytes
SHA-256: `11f402e285d3dc854a9d8675dcdc64e944a43de26d8c68d1563e590b344ffde3`

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