PDF malware analysis — malicious · ee764e768c04cc72

MALICIOUS

PDF

41.3 KB Created: 2021-05-19 05:47:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11

MD5: 0d94f78598f172130ca36db68e5e52d8 SHA-1: e5fcb07bfd9ee3f1d2aafd16a60e324946c3c1bf SHA-256: ee764e768c04cc7274ee03ea9417b970fa467330b5e30ee6647a1825f8ef7205

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains multiple links to external websites, including a known malicious redirector. The document body and embedded links suggest a lure for game hacks and free items, likely intended to lead users to download further malware or engage in phishing. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

Machine Learning

Nyx PDF Classifier malicious score 0.9971

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.xyz/app/1094591345/pokemon-go-free-outfits-game-hack In PDF document text
- https://sitecontabil.com.br/ckfinder/userfiles/files/coin-master-online-hack-link_GM406889139.pdfIn PDF document text
- https://sitecontabil.com.br/ckfinder/userfiles/files/roblox-promo-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
- https://sitecontabil.com.br/ckfinder/userfiles/files/free-coins-coin-master_GM406889139.pdfIn PDF document text
- https://sitecontabil.com.br/ckfinder/userfiles/files/roblox-robux_GM431946152.pdfIn PDF document text
- https://sitecontabil.com.br/ckfinder/userfiles/files/wurst-client-18-9_GM479516143.pdfIn PDF document text
- https://sitecontabil.com.br/ckfinder/userfiles/files/plug-toolbox-for-minecraft-free-ios_GM479516143.pdfIn PDF document text
- https://sitecontabil.com.br/ckfinder/userfiles/files/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
- https://sitecontabil.com.br/ckfinder/userfiles/files/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
- https://sitecontabil.com.br/ckfinder/userfiles/files/play-coin-master_GM406889139.pdfIn PDF document text
- https://sitecontabil.com.br/ckfinder/userfiles/files/robux-hack-2021_GM431946152.pdfIn PDF document text
- https://sitecontabil.com.br/ckfinder/userfiles/files/coin-master-free-spins-and-coins-for-iphone_GM406889139.pdfIn PDF document text
- https://sitecontabil.com.br/ckfinder/userfiles/files/claim-free-robux_GM431946152.pdfIn PDF document text
- https://sitecontabil.com.br/ckfinder/userfiles/files/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
- https://sitecontabil.com.br/ckfinder/userfiles/files/minecraft-svg-free_GM479516143.pdfIn PDF document text
- https://sitecontabil.com.br/ckfinder/userfiles/files/coin-master-free-spins-a2z-help_GM406889139.pdfIn PDF document text
- https://sitecontabil.com.br/ckfinder/userfiles/files/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
- https://sitecontabil.com.br/ckfinder/userfiles/files/minecraft-windows-10-code-free_GM479516143.pdfIn PDF document text
- https://sitecontabil.com.br/ckfinder/userfiles/files/free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://sitecontabil.com.br/ckfinder/userfiles/files/minecraft-free-download-unblocked_GM479516143.pdfIn PDF document text
- https://sitecontabil.com.br/ckfinder/userfiles/files/how-to-make-robux_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_003_off000048d3.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x48D3	24176 bytes
SHA-256: `36d0620b630cd7e9743008b88da312d47ec7a5db8527aa7609e96955db5988e0`
`font_01_sfnt_off00007f93.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7F93	18204 bytes
SHA-256: `973981879205b11356b27c8529204fe7ec6cada1120db9f7b3eee89ff9ad3a2d`

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