PDF malware analysis — malicious · f7409fa55b6f2727

MALICIOUS

PDF

46.3 KB Created: 2021-05-31 10:42:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: 411ee9d2db69c4dd804499749eec70d8 SHA-1: 154b432b1c9dc9da0e1cdc1bb244c4d8beebf47e SHA-256: f7409fa55b6f2727951b0dcf0ece2d69b60457fc1c9d90e1f8f8664b32abbcda

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links designed to lure users into clicking on what appears to be a free game hack or generator. These links redirect to malicious infrastructure, indicating a phishing or scam attempt. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

Machine Learning

Nyx PDF Classifier malicious score 0.9832

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/free-admin-roblox-mega-vip-game-hack In PDF document text
- https://digitalknowledge.pl/wp-content/uploads/fsqm-files/roblox-hacked-com-2021_GM431946152.pdfIn PDF document text
- https://digitalknowledge.pl/wp-content/uploads/fsqm-files/free-views-on-tiktok_GM835599320.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-unblocked_GM479516143.pdfIn PDF document text
- https://digitalknowledge.pl/wp-content/uploads/fsqm-files/minecraft-pocket-edition-free_GM479516143.pdfIn PDF document text
- https://digitalknowledge.pl/wp-content/uploads/fsqm-files/free-minecraft-skin-maker_GM479516143.pdfIn PDF document text
- https://digitalknowledge.pl/wp-content/uploads/fsqm-files/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://digitalknowledge.pl/wp-content/uploads/fsqm-files/free-minecraft-worlds_GM479516143.pdfIn PDF document text
- https://digitalknowledge.pl/wp-content/uploads/fsqm-files/free-robux-generator-without-human-verification-2021_GM431946152.pdfIn PDF document text
- https://digitalknowledge.pl/wp-content/uploads/fsqm-files/minecraft-free-ios_GM479516143.pdfIn PDF document text
- https://digitalknowledge.pl/wp-content/uploads/fsqm-files/how-to-get-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
- https://digitalknowledge.pl/wp-content/uploads/fsqm-files/how-to-hack-roblox-accounts_GM431946152.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/free-robux-websites-2021_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/free-minecraft-account-generator_GM479516143.pdfIn PDF document text
- https://digitalknowledge.pl/wp-content/uploads/fsqm-files/get-free-robux-now_GM431946152.pdfIn PDF document text
- https://digitalknowledge.pl/wp-content/uploads/fsqm-files/how-to-get-free-robux-no-human-verification-2021_GM431946152.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/free-minecraft-account-and-password_GM479516143.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
`stream_004_off00005439.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5439	25588 bytes
SHA-256: `ee32b5e83b18ef12514b6c47c80e459cb1ce7db79c5b0b8de553b4d463f4c3ee`
`font_01_sfnt_off00008ee4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8EE4	19524 bytes
SHA-256: `273aab100cfe171b49b76bd2d86b89a246e580227b0eda252a5ecf8bd8fbadea`

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