Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe97fdcc9d9013a7…

MALICIOUS

PDF

43.2 KB Created: 2021-05-14 19:29:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: bb68f21f4719abbf649ac5da28a4c40c SHA-1: 15a65622b6ed270b6ab478aea5958a4e7e5bd9c1 SHA-256: fe97fdcc9d9013a7589e1191231f2a53a1ba57e0ead223438f525e1a16883b0e
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous embedded links to external websites, many of which are SEO-optimized PDFs related to game hacks and rewards. The heuristic 'PDF_SEO_LINK_FARM' and the presence of a 'SE_MFA_LURE' suggest a phishing or credential harvesting attempt. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/rewards-robux-game-hack PDF link annotation
    • https://www.e-starmagazine.com/uploads/files/coin-master-hack-without-human-verification_GM406889139.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/free-roblox-outfits-2021_GM431946152.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/coin-master-hack-without-verify_GM406889139.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/how-to-free-robux_GM431946152.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/free-spins-coin-master-links-blogspot_GM406889139.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/minecraft-auto-miner-hack_GM479516143.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/roblox-free-hair-boy_GM431946152.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/free-card-collection-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/blox-supply-free-robux_GM431946152.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/coin-master-free-spins-daily-link-game-mod_GM406889139.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/coin-master-hack-tool-exe_GM406889139.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/coin-master-hack-facebook_GM406889139.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/how-to-get-free-robux-for-free_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
font_00_sfnt_off000049d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49D2 26908 bytes
SHA-256: 7d6bf462ac886c9d1d98972fee6148743449dbc0934e12dd251b5a8a81a17c3d
font_01_sfnt_off00008612.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8612 18416 bytes
SHA-256: 21116ea904a611fad18bc85f00e00e8b2c3853fc9714ecb701cf7760588061a1

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