PDF malware analysis — malicious · f40f50462b4cb5d5

MALICIOUS

PDF

48.1 KB Created: 2021-06-09 03:57:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: f8fb93c585d3aa9393cc3e6677c3a6ad SHA-1: e16dbfed8e5aa83e9e3c6066bd6a4a79dfcfcf91 SHA-256: f40f50462b4cb5d565625ffbeb4eb5b29a3b2629d9c3eb047949874490cf953a

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links designed to lure users with promises of free game currency or hacks. These links redirect to malicious infrastructure, specifically a URL associated with a 'free generator / game hack'. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted from this sample, but the embedded URLs and the nature of the lure strongly suggest a phishing or scam attempt.

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.tw/app/431946152/give-you-free-robux-game-hack In PDF document text
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/free-roblox-resources_GM431946152.pdfIn PDF document text
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/how-to-be-a-hacker-on-roblox-ipad_GM431946152.pdfIn PDF document text
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/roblox-bubble-chat-hack_GM431946152.pdfIn PDF document text
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/minecraft-multiplayer-free_GM479516143.pdfIn PDF document text
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/mode-de-hack-sur-roblox-bee-sarwn-simulator_GM431946152.pdfIn PDF document text
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/progaming-hacks-com-roblox_GM431946152.pdfIn PDF document text
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/free-falling-roblox-codes_GM431946152.pdfIn PDF document text
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/get-a-profesional-roblox-game-cover-for-free_GM431946152.pdfIn PDF document text
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/robux-party-com-four-robux-free_GM431946152.pdfIn PDF document text
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/how-to-play-minecraft-for-free_GM479516143.pdfIn PDF document text
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/poke-free-robux_GM431946152.pdfIn PDF document text
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/youtube-roblox-how-to-get-free-obc_GM431946152.pdfIn PDF document text
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/free-roblox-hacker-com-free-roblox-hack_GM431946152.pdfIn PDF document text
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/howto-hack-gear-in-the-roblox-catalog_GM431946152.pdfIn PDF document text
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/how-to-get-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/roblox-hack-v30rar_GM431946152.pdfIn PDF document text
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/free-tiktok-likes-generator_GM835599320.pdfIn PDF document text
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/real-minecraft-for-free_GM479516143.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_off00005139.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5139	26964 bytes
SHA-256: `10d13f35ff925976430202a9d08fea524ffb949270a5b38a936561f02a2ac5fe`
`font_01_sfnt_off00008eea.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8EEA	2884 bytes
SHA-256: `8a43bb6e8df1af2fb45a879a4690d24d7c589850e720fa894cc2da68b771c6ef`
`font_02_sfnt_off000098e1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x98E1	18412 bytes
SHA-256: `cce7621b73b431a79432764a94aabbb6ccb88068edf13f098535e5a7678b758f`

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