Malicious PDF — malware analysis report

Static analysis result for SHA-256 8628e29ee1c59583…

MALICIOUS

PDF

44.4 KB Created: 2021-05-16 06:01:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 1960c1616640e596e7435a34e8c31327 SHA-1: 96a0fd1720656d21c996251862c3187e0885813d SHA-256: 8628e29ee1c59583c918991b92b991603e295d49940676083334f1bc7df2296b
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a prominent link to 'huskybucks.com free robux game hack', which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains references to this URL and other similar lures. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content or initiate downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 3

  • 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/431946152/huskybucks.com-free-robux-game-hack In PDF document text
    • https://www.manmed.info:443/images/hack-coin-master-8-ball-pool_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/minecraft-free-download-mac_GM479516143.pdfIn PDF document text
    • https://www.manmed.info:443/images/get-gold-coin-master-village-hack_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-robux-co_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/coin-master-hacks-no-human-verification_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/download-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/minecraft-free-play-no-download_GM479516143.pdfIn PDF document text
    • https://www.manmed.info:443/images/coin-master-free-spins-link-2021-app_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/actual-free-robux_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/coin-master-free-spins-link-iphone_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-free-robux_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/coin-master-free-spins-link-today-twitter_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/coin-master-game-hunters-club_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/if-i-uninstall-minecraft-can-i-reinstall-it-for-free_GM479516143.pdfIn PDF document text
    • https://www.manmed.info:443/images/robuxhub-net_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/coin-master-blogspot-free-spins_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/earn-points-for-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.

FilenameKindSourceSize
stream_003_off00004749.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4749 31120 bytes
SHA-256: fbb73c382438e3dcc0c03019d8fc071a7fbfdaafd05d9e842188d6bfdea9514c
font_01_sfnt_off00008a3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A3E 18688 bytes
SHA-256: 6988f73f4b0746331af176c61d8a6d12afd54d9d4021c1ba8a7576897a1c52a2

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