PDF malware analysis — malicious · 1c929cfea0892944

MALICIOUS

PDF

50.1 KB Created: 2021-06-10 12:18:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: eb53fcbb940190da09ce7ca6d0abe44b SHA-1: abd0a178fe0fead7552d186a2526cc6792404533 SHA-256: 1c929cfea08929447c7fbb833c56daa7bdbae1ed1a82cd472b6a10013289a582

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, disguised as "free generator" or "game hack" lures. The primary redirect URL is https://netcdn.tw/app/431946152/roblox-hacks-robuxian-secret-forum-hack-v11-game-hack, which likely leads to further malicious content or malware download. The document body and embedded artifacts do not contain executable scripts, but the presence of multiple malicious links strongly indicates a phishing or malware distribution attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9789

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/roblox-hacks-robuxian-secret-forum-hack-v11-game-hack In PDF document text
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/free-roblox-accounts-2021-august_GM431946152.pdfIn PDF document text
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/minecraft-toys-for-free_GM479516143.pdfIn PDF document text
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/roblox-hacks-game_GM431946152.pdfIn PDF document text
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/minecraft-pe-free_GM479516143.pdfIn PDF document text
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/free-minecraft-texture-packs_GM479516143.pdfIn PDF document text
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/hacks-for-cbro-roblox_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/play-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/free-accounts-that-have-robux_GM431946152.pdfIn PDF document text
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/naruto-rpg-roblox-cheats_GM431946152.pdfIn PDF document text
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/roblox-help-free-robux_GM431946152.pdfIn PDF document text
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/free-robux-2021_GM431946152.pdfIn PDF document text
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/free-admin-roblox-2021_GM431946152.pdfIn PDF document text
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/roblox-hack-dansploit_GM431946152.pdfIn PDF document text
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/free-robux-online-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/is-there-anyway-to-get-robux-for-free_GM431946152.pdfIn PDF document text
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/roblox-free-robux-2021-hack_GM431946152.pdfIn PDF document text
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/mistplay-hack-robux_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_off00005525.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5525	27388 bytes
SHA-256: `4c209724acd0223db5d250c0e084af2cd4a4a472bcd91effcdcdef47ec0148f3`
`font_01_sfnt_off000094ca.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x94CA	2840 bytes
SHA-256: `3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676`
`font_02_sfnt_off00009e7c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9E7C	19208 bytes
SHA-256: `670fada3a17c7944edde6784c6d707c86781c2e7815d2af635b4ba7447a7e6e0`

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