Malicious PDF — malware analysis report

Static analysis result for SHA-256 534a62b2a3bf71d2…

MALICIOUS

PDF

42.3 KB Created: 2021-05-15 07:05:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 469a5ea98c2fa56bd03465a747867be7 SHA-1: 214111eb6185d25c4b1efbec59cb7f472689267c SHA-256: 534a62b2a3bf71d220ed61ebac75db7b42351325f4491e9773cb21b9eaf274d3
200 Risk Score

Malware Insights

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

This PDF document employs a fake CAPTCHA and lures related to game hacks to deceive users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, suggesting an attempt to lead the user to a malicious site or download. While no scripts were directly extracted, the PDF structure and heuristic firings indicate a malicious intent to exploit user interaction for further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/406889139/coin-master-free-spins-game-hack In PDF document text
    • https://imagetravelnepal.com/userfiles/files/roblox-april-fools-hack_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/free-robux-without-survey_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/haktuts-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/gamehunters-coin-master_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/claim-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/jailbreak-script_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/download-hack-coin-master-apk_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/tryrbx-site-free-robux_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/coin-master-hack-lost-world-2021-com_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/free-coin-master-spins-no-verification_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/minecraft-dungeons-free-download-pc_GM479516143.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/coin-master-free-spins-link-2021-ios_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/toolbox-for-minecraft-pe-mod-apk_GM479516143.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/aternos-free-minecraft-server_GM479516143.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/coin-master-free-spins-link-ios_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/coin-master-free-spins-link-today-new-2021_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.

FilenameKindSourceSize
stream_003_off00004941.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4941 26328 bytes
SHA-256: f621f37f5dc71f99ddbc59bacbf8ee9eb7efa1098b523955c52a364fc94199c5
font_01_sfnt_off00008419.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8419 17884 bytes
SHA-256: 7b855ef2bb944b5b370c61480927ccad63ff31bdbf820bc1f0da9d35a10f5fb2

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