PDF malware analysis — malicious · 0193e36c16beedea

MALICIOUS

PDF

35.0 KB Created: 2021-07-04 06:04:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22

MD5: f05529e7924f35e5f64078b25a0a7781 SHA-1: e4702f2e2193b39aeea51d3ff9b40b050d1ea2ac SHA-256: 0193e36c16beedea9e0aeeb252d601c0e971aa6efed38b460e016f3053d89667

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains multiple links, including one to a known malicious redirector infrastructure at http://netcdn.tw/app/406889139/get-free-spins-in-coin-master-game-hack. This lure is designed to trick users into believing they can obtain free in-game currency or hacks. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content or further stages of an attack.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

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/406889139/get-free-spins-in-coin-master-game-hack In PDF document text
- https://www.pearlsayurvedclinics.com/cote_dor_import/admin/ckfinder/userfiles/files/pop-slots-free-vegas-casino-slot-machine-game-coin-master_GM406889139.pdfIn PDF document text
- https://www.pearlsayurvedclinics.com/cote_dor_import/admin/ckfinder/userfiles/files/android-coin-master-hack_GM406889139.pdfIn PDF document text
- https://www.pearlsayurvedclinics.com/cote_dor_import/admin/ckfinder/userfiles/files/robuxhub-net_GM431946152.pdfIn PDF document text
- https://www.pearlsayurvedclinics.com/cote_dor_import/admin/ckfinder/userfiles/files/javascript-roblox-robux-hack_GM431946152.pdfIn PDF document text
- https://www.pearlsayurvedclinics.com/cote_dor_import/admin/ckfinder/userfiles/files/free-robux-2021_GM431946152.pdfIn PDF document text
- https://www.pearlsayurvedclinics.com/cote_dor_import/admin/ckfinder/userfiles/files/how-to-get-free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
- https://www.pearlsayurvedclinics.com/cote_dor_import/admin/ckfinder/userfiles/files/coin-master-free-spin-game_GM406889139.pdfIn PDF document text
- https://www.pearlsayurvedclinics.com/cote_dor_import/admin/ckfinder/userfiles/files/free-robux-please_GM431946152.pdfIn PDF document text
- https://www.pearlsayurvedclinics.com/cote_dor_import/admin/ckfinder/userfiles/files/how-to-get-free-robux-on-iphone_GM431946152.pdfIn PDF document text
- https://www.pearlsayurvedclinics.com/cote_dor_import/admin/ckfinder/userfiles/files/guide--coin-master-free-tips_GM406889139.pdfIn PDF document text
- https://www.pearlsayurvedclinics.com/cote_dor_import/admin/ckfinder/userfiles/files/free-roblox-accounts-with-bc-and-robux_GM431946152.pdfIn PDF document text
- https://www.pearlsayurvedclinics.com/cote_dor_import/admin/ckfinder/userfiles/files/free-virusescom-robux_GM431946152.pdfIn PDF document text
- https://www.pearlsayurvedclinics.com/cote_dor_import/admin/ckfinder/userfiles/files/coin-master-ios-gods-hack_GM406889139.pdfIn PDF document text
- https://www.pearlsayurvedclinics.com/cote_dor_import/admin/ckfinder/userfiles/files/coin-master-hack-ios-jailbreak_GM406889139.pdfIn PDF document text
- https://www.pearlsayurvedclinics.com/cote_dor_import/admin/ckfinder/userfiles/files/roblox-free-acount-with-rogue-linrsge_GM431946152.pdfIn PDF document text
- https://www.pearlsayurvedclinics.com/cote_dor_import/admin/ckfinder/userfiles/files/hacks-para-coin-master_GM406889139.pdfIn PDF document text
- https://www.pearlsayurvedclinics.com/cote_dor_import/admin/ckfinder/userfiles/files/free-minecraft-shaders_GM479516143.pdfIn PDF document text
- https://www.pearlsayurvedclinics.com/cote_dor_import/admin/ckfinder/userfiles/files/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
- https://www.pearlsayurvedclinics.com/cote_dor_import/admin/ckfinder/userfiles/files/find-the-domo-roblox-cheat_GM431946152.pdfIn PDF document text
- https://www.pearlsayurvedclinics.com/cote_dor_import/admin/ckfinder/userfiles/files/universal-minecraft-converter-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_off0000335d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x335D	22728 bytes
SHA-256: `af57db690831c86158bffb61da161cf618f75ce5e7a0f672facaf8fd6fae7ba8`
`font_01_sfnt_off00006667.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6667	18176 bytes
SHA-256: `40bd2a423e8c3e22f2455c3bf096c64e087039c583c2df40abec99adf6858c95`

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