Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ee0472ec25713a6…

MALICIOUS

PDF

45.5 KB Created: 2021-05-11 18:31:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: a917807c660bb25aa4b42b6dc93e9009 SHA-1: b3544bf6f8871b52371a5b5234255fa14c1f39ff SHA-256: 7ee0472ec25713a661a53a310105999a09ffea173d7f929d11765a0939b0db5d
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a lure of 'Free Robux' and a fake CAPTCHA to entice users into clicking malicious links. The document contains multiple embedded URLs, including a primary redirector at `https://netcdn.xyz/app/431946152/free-robux-with-no-verification-2021-game-hack`, which is associated with known malicious infrastructure. The use of a fake CAPTCHA and the redirection to potentially harmful content strongly suggest an attempt to exploit user trust for malicious purposes, likely leading to further malware downloads or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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-with-no-verification-2021-game-hack In PDF document text
    • https://brainpads.com/images/actual-free-robux_GM431946152.pdfIn PDF document text
    • https://brainpads.com/images/free-robux-app_GM431946152.pdfIn PDF document text
    • https://brainpads.com/images/tower-of-hell-roblox-hack_GM431946152.pdfIn PDF document text
    • https://brainpads.com/images/free-2021-robux_GM431946152.pdfIn PDF document text
    • https://www.brainpads.com/images/how-to-hack-mcpe-master-coins_GM406889139.pdfIn PDF document text
    • https://brainpads.com/images/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • https://brainpads.com/images/appsmobinfo-coinmasterhack-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://brainpads.com/images/how-to-get-free-premium-roblox_GM431946152.pdfIn PDF document text
    • https://brainpads.com/images/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://brainpads.com/images/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • https://brainpads.com/images/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • https://www.brainpads.com/images/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
    • https://brainpads.com/images/how-to-hack-coin-master-pc_GM406889139.pdfIn PDF document text
    • https://www.brainpads.com/images/free-daily-coin-master-coins_GM406889139.pdfIn PDF document text
    • https://www.brainpads.com/images/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
    • https://brainpads.com/images/coin-master-34-5-hack_GM406889139.pdfIn PDF document text
    • https://www.brainpads.com/images/how-to-make-my-own-coin-master-cards-hack_GM406889139.pdfIn PDF document text
    • https://www.brainpads.com/images/robux-free-online_GM431946152.pdfIn PDF document text
    • https://www.brainpads.com/images/minecraft-hacks-xbox_GM479516143.pdfIn PDF document text
    • https://brainpads.com/images/coin-master-free-spin-trick_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004876.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4876 24720 bytes
SHA-256: 00a2ac9cb29882fa07e8e557ce097abf768577a8e0e091ed9f40c98584468007
font_01_sfnt_off00008189.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8189 3016 bytes
SHA-256: 4c3e2db5174821787a4569c9da4979555510caebd15fb9cea35573c139e242bd
font_02_sfnt_off00008bed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BED 19368 bytes
SHA-256: aac922b8691acc9aa277dffee065f580c863b50a75d1a5b8a64d6db85e21622d

Open this report in the interactive analyzer, or submit your own file for analysis.