PDF malware analysis — malicious · a6676a169802214d

MALICIOUS

PDF

33.8 KB Created: 2021-07-06 11:47:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: f06b2eea87ed2e2ce370f27fe6b91d0a SHA-1: ddcf9e01c336729432014e331c3494a5a4854abf SHA-256: a6676a169802214d2debf2b1a5ed74e16adb41aa86d84cb11e17ec5c662b7d71

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/coin-master-free-spins-a2z-help-game-hack PDF link annotation
- https://sitecontabil.com.br/ckfinder/userfiles/files/real-robux-hack-2021_GM431946152.pdfIn PDF document text
- https://sitecontabil.com.br/ckfinder/userfiles/files/coin-master-fan-hack_GM406889139.pdfIn PDF document text
- https://sitecontabil.com.br/ckfinder/userfiles/files/toolbox-for-mcpe_GM479516143.pdfIn PDF document text
- https://sitecontabil.com.br/ckfinder/userfiles/files/no-virus-roblox-hack-xbox-one_GM431946152.pdfIn PDF document text
- https://sitecontabil.com.br/ckfinder/userfiles/files/coin-master-coins-free_GM406889139.pdfIn PDF document text
- https://sitecontabil.com.br/ckfinder/userfiles/files/coin-master-com_GM406889139.pdfIn PDF document text
- https://sitecontabil.com.br/ckfinder/userfiles/files/minecraft-windows-10-free-code_GM479516143.pdfIn PDF document text
- https://sitecontabil.com.br/ckfinder/userfiles/files/free-robux-hck_GM431946152.pdfIn PDF document text
- https://sitecontabil.com.br/ckfinder/userfiles/files/coin-master-hack-apk-35-33_GM406889139.pdfIn PDF document text
- https://sitecontabil.com.br/ckfinder/userfiles/files/free-way-to-get-free-robux-in-roblox_GM431946152.pdfIn PDF document text
- https://sitecontabil.com.br/ckfinder/userfiles/files/moonactive-free-spins-link_GM406889139.pdfIn PDF document text
- https://sitecontabil.com.br/ckfinder/userfiles/files/free-coin-master-game_GM406889139.pdfIn PDF document text
- https://sitecontabil.com.br/ckfinder/userfiles/files/roblox-free-robux-map_GM431946152.pdfIn PDF document text
- https://sitecontabil.com.br/ckfinder/userfiles/files/freemoblie24info-free-robux_GM431946152.pdfIn PDF document text
- https://sitecontabil.com.br/ckfinder/userfiles/files/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
- https://sitecontabil.com.br/ckfinder/userfiles/files/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
- https://sitecontabil.com.br/ckfinder/userfiles/files/free-robux-generator-secure_GM431946152.pdfIn PDF document text
- https://sitecontabil.com.br/ckfinder/userfiles/files/free-minecraft-codes_GM479516143.pdfIn PDF document text
- https://sitecontabil.com.br/ckfinder/userfiles/files/how-to-get-minecraft-for-free-on-iphone-2021_GM479516143.pdfIn PDF document text
- https://sitecontabil.com.br/ckfinder/userfiles/files/bloodborn-roblox-hack_GM431946152.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_002_off00002df9.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x2DF9	22704 bytes
SHA-256: `0c93ec43f1ab508ba291cd649acb55471e072580e095ee6a1fabc6d862412f64`
`font_01_sfnt_off000060c1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x60C1	18464 bytes
SHA-256: `38371b38e202a061bb85b2c2f3babff414a9c8e1a23fd0033143b7789bcb9fac`

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