PDF malware analysis — malicious · ab1079a80fad3625

MALICIOUS

PDF

45.3 KB Created: 2021-05-03 16:49:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 3275b41693fa7a8f821343b96af7d910 SHA-1: d843d140ac5fd1d9e19a0329d8d3227c63caa923 SHA-256: ab1079a80fad36253c7dee5a5c194565cd0451670931931a1111dbcb5bf1f294

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains a high-confidence heuristic indicating it links to a 'free generator / game hack' redirector, which is a common lure for malicious sites. The document body, though heavily obfuscated, contains references to the same URL. The presence of embedded URLs and the nature of the lure suggest the document is designed to trick users into visiting a potentially malicious website, likely for credential harvesting or malware delivery.

Machine Learning

Nyx PDF Classifier malicious score 0.9814

Heuristics 4

PDF links to a 'free generator / game hack' redirector high 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.
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
External URI info PDF_URI

PDF contains an external URL action
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/hack-and-slash-roblox-ghostemane-game-hack PDF link annotation
- http://www.technibuild-group.com/uploaded_files/userfiles/files/roblox-free-boombox-games.pdfIn PDF document text
- http://www.technibuild-group.com/uploaded_files/userfiles/files/como-tener-hacks-para-roblox.pdfIn PDF document text
- http://www.technibuild-group.com/uploaded_files/userfiles/files/free-roblox-online-no-download.pdfIn PDF document text
- http://www.technibuild-group.com/uploaded_files/userfiles/files/roblox-real-robux-hack.pdfIn PDF document text
- http://technibuild-group.com/uploaded_files/userfiles/files/robux-hack-website-no-survey.pdfIn PDF document text
- http://www.technibuild-group.com/uploaded_files/userfiles/files/free-robux-generator-website.pdfIn PDF document text
- http://www.technibuild-group.com/uploaded_files/userfiles/files/2021-robux-free-generator-no-survay-no-human-verification.pdfIn PDF document text
- http://www.technibuild-group.com/uploaded_files/userfiles/files/roblox-hide-and-seek-game-for-free.pdfIn PDF document text
- http://www.technibuild-group.com/uploaded_files/userfiles/files/roblox-hacking-robux-no-suvey-and-download-2021.pdfIn PDF document text
- http://www.technibuild-group.com/uploaded_files/userfiles/files/how-to-get-free-robux-without-getting-apps.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_003_off000043c3.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x43C3	27576 bytes
SHA-256: `da087055b82321f3954445acadfa5f69f6b5adc1bae2b8d6b8d209852beae863`
`font_01_sfnt_off00008239.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8239	3312 bytes
SHA-256: `40bd8eebcb3a0d68a8646f1930e84f30a44bfa48525263c6c528f0bc1e9c1677`
`font_02_sfnt_off00008d89.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8D89	18888 bytes
SHA-256: `a8b76a9045e5742c1dcbb08cf05883a5111ee29dc0e28821a9df53288e9ff428`

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