PDF malware analysis — malicious · 7e0042e78242e860

MALICIOUS

PDF

44.0 KB Created: 2021-05-10 22:33:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24

MD5: fb66362d27402b776b971497f0bbb71d SHA-1: 33585008e54b989b28b97178e47f3ebf10872d66 SHA-256: 7e0042e78242e860cafbf3daa76229b1bc6e306c1c29a012d4613c090c3b3520

200 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document employs a common lure of "free generator / game hack" to trick users into clicking malicious links. The document displays a fake CAPTCHA or human-verification prompt, which is a social engineering tactic to encourage user interaction. The primary malicious link identified is https://netcdn.xyz/app/431946152/free-robux-no-verification-2021-game-hack, which is associated with known malicious redirector infrastructure.

Machine Learning

Nyx PDF Classifier malicious score 0.9969

Heuristics 5

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
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/431946152/free-robux-no-verification-2021-game-hack In PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/roblox-got-talent-piano-hack_GM431946152.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/coin-master-daily-gift-free-spins-and-coins_GM406889139.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/free-robux-pins_GM431946152.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/how-to-legally-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/coin-master-free-spins-ios-2021_GM406889139.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/coin-master-unlimited-spin-link_GM406889139.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/free-robux-come_GM431946152.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/free-coin-master-links_GM406889139.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/actual-free-robux_GM431946152.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/free-coin-coin-master_GM406889139.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/minecraft-pe-free-download-android_GM479516143.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/minecraft-that-you-can-play-for-free_GM479516143.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/claimrobux-net_GM431946152.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/how-to-get-free-robux-easy-no-download_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_off00004d92.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4D92	25652 bytes
SHA-256: `15dedcfc4851472982c9bdef143589810a75fc98f0b50e317de03fb30ccddad5`
`font_01_sfnt_off000087a3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x87A3	19004 bytes
SHA-256: `d712ae43aec968503a6d4b8ef93db90b07e4d7d9799b66e9787cf09d99ae12e2`

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