PDF malware analysis — malicious · bda38f1df8cbf5fb

MALICIOUS

PDF

31.5 KB Created: 2021-07-19 22:32:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: c3a9ceb3e2eb8f42455c56fab6eae823 SHA-1: f2e68f1a98e70b919cae623bb9ef0fb43b9b14b0 SHA-256: bda38f1df8cbf5fb24f79ef7bcfa3d3981e83b9e8bb89de3a47f06a104c2530d

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links to redirector infrastructure, specifically advertising a "Roblox Hacked Com 2021" game hack. The primary lure URL, http://netcdn.tw/app/431946152/roblox-hacked-com-2021-game-hack, is flagged as malicious. The document body also contains numerous other links to similar scam-related PDF files hosted on hemmet-strand.dk. The presence of these links and the lure content strongly suggest a phishing or scamming attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9893

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 http://netcdn.tw/app/431946152/roblox-hacked-com-2021-game-hack In PDF document text
- http://hemmet-strand.dk/images/free-minecraft-bedrock_GM479516143.pdfIn PDF document text
- http://hemmet-strand.dk/images/free-minecraft-premium-account_GM479516143.pdfIn PDF document text
- http://hemmet-strand.dk/images/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
- http://hemmet-strand.dk/images/free-robux-hack-2021_GM431946152.pdfIn PDF document text
- http://hemmet-strand.dk/images/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
- http://hemmet-strand.dk/images/robux-free-com_GM431946152.pdfIn PDF document text
- http://hemmet-strand.dk/images/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
- http://hemmet-strand.dk/images/how-to-get-minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
- http://hemmet-strand.dk/images/free-tiktok-likes-no-survey_GM835599320.pdfIn PDF document text
- http://hemmet-strand.dk/images/how-do-you-get-minecraft-for-free_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
`font_00_sfnt_off000026bc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x26BC	21528 bytes
SHA-256: `ca63369b184e044b1b7a76da47de37dd077df10ddcb82a08e0f69d0249c864a5`
`font_01_sfnt_off000055d6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x55D6	19204 bytes
SHA-256: `a843c5ca876463c5b8999cf5589cf4aa204d9a964b83c691331fb87130c2a057`

Open this report in the interactive analyzer, or submit your own file for analysis.