Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a399add7e3dda3c…

MALICIOUS

PDF

42.9 KB Created: 2021-05-16 23:44:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 8d7ea3689d734f08e5f0a32e6bf88792 SHA-1: 5f4c2d9d0e0effbaecf740bc357b311b9c14351f SHA-256: 8a399add7e3dda3cef878e7d87e65f0a1ff242502865c5f4f39457a82c36992e
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that point to known malicious redirector infrastructure, specifically targeting users with lures related to popular games like Coin Master and Roblox. The ML classifier also strongly flagged this PDF as malicious. The presence of these links suggests the document is designed to redirect users to potentially harmful websites for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/406889139/free-spins-coin-master-site-www.quora.com-game-hack In PDF document text
    • https://newenglandafs.com/images/free-robux-now_GM431946152.pdfIn PDF document text
    • https://newenglandafs.com/images/coin-master-free-spin-whatsapp-group-link_GM406889139.pdfIn PDF document text
    • https://newenglandafs.com/images/roblox-bloxburg-hack_GM431946152.pdfIn PDF document text
    • https://newenglandafs.com/images/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://newenglandafs.com/images/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • https://newenglandafs.com/images/free-roblox-intros_GM431946152.pdfIn PDF document text
    • https://newenglandafs.com/images/coin-master-game-free-play-online_GM406889139.pdfIn PDF document text
    • https://newenglandafs.com/images/unlimited-robux_GM431946152.pdfIn PDF document text
    • https://newenglandafs.com/images/free-girl-hair-roblox_GM431946152.pdfIn PDF document text
    • https://newenglandafs.com/images/coin-master-hack-unlimited-spins-and-coins-cheats_GM406889139.pdfIn PDF document text
    • https://newenglandafs.com/images/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • https://newenglandafs.com/images/get-free-spins-coin-master-october-2021_GM406889139.pdfIn PDF document text
    • https://newenglandafs.com/images/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • https://newenglandafs.com/images/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • https://newenglandafs.com/images/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://newenglandafs.com/images/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • https://newenglandafs.com/images/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • https://newenglandafs.com/images/coin-master-vip-hack_GM406889139.pdfIn PDF document text
    • https://newenglandafs.com/images/ro-ghoul-script_GM431946152.pdfIn PDF document text
    • https://newenglandafs.com/images/info-roblox-com-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a65.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A65 24712 bytes
SHA-256: 4330605a38efcf17c31eea1a913dbdb6074307b33ac48ba1736d78b6bfafbb21
font_01_sfnt_off00008379.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8379 18884 bytes
SHA-256: bb00696f4b16c794428e45170a4ccec074263e1d5dc5fc7380943e32f5bacec9

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