PDF malware analysis — malicious · c224da00b211b32a

MALICIOUS

PDF

43.7 KB Created: 2021-06-03 08:32:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20

MD5: ea16f21e2a88ae7be697fe8601b73f23 SHA-1: 219d6df091fb37fca53a74234b93d9496a4af6ff SHA-256: c224da00b211b32aed77ba486b2268bdb03a7f4200f6f82d988f3c4936adfc31

220 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, specifically advertising 'free generator / game hack' lures. The document body, though partially corrupted, contains references to these lures and a URL associated with malicious activity. The presence of a fake CAPTCHA heuristic further suggests an attempt to trick the user into interacting with malicious content.

Machine Learning

Nyx PDF Classifier malicious score 0.9865

Heuristics 6

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.
Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA

Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
Callback phishing phone lure medium SE_CALLBACK_LURE

Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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.online/app/406889139/coin-master-gift-link-game-hack In PDF document text
- http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
- http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
- http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/lazyblocks-com-free-robux_GM431946152.pdfIn PDF document text
- http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/free-robux-no-password_GM431946152.pdfIn PDF document text
- http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/buy-tiktok-followers-free_GM835599320.pdfIn PDF document text
- http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/blox-land-free-robux_GM431946152.pdfIn PDF document text
- http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/get-free-robux-2021_GM431946152.pdfIn PDF document text
- http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/roblox-lawsuit_GM431946152.pdfIn PDF document text
- http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/free-coins-coin-master-link_GM406889139.pdfIn PDF document text
- http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/como-sacar-buen-puntaje-en-juego-coin-master-free-spins_GM406889139.pdfIn PDF document text
- http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
- http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/roblox-hack-client_GM431946152.pdfIn PDF document text
- http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/wwwcoin-master-hack-game-download_GM406889139.pdfIn PDF document text
- http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/bloxpink-free-robux_GM431946152.pdfIn PDF document text
- http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
- http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/how-to-get-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
- http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
- http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/codes-how-to-get-free-robux_GM431946152.pdfIn PDF document text
- http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/rbx-free-robux_GM431946152.pdfIn PDF document text
- http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/master-coin-free-spin-daily_GM406889139.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_004_off000050d1.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x50D1	24736 bytes
SHA-256: `26e82355dc51f1a0ad65e9d4d27cc16a0eeff841caf942be983a80350bde09be`
`font_01_sfnt_off000089a7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x89A7	17716 bytes
SHA-256: `8f803537a119e07ded82a73af47a81e82657788fe52602d20bb0bf58e866784a`

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