Malicious PDF — malware analysis report

Static analysis result for SHA-256 f43b2fee96362bcd…

MALICIOUS

PDF

33.7 KB Created: 2021-06-29 04:30:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 49d0a1170da32d9a92edcd46f50e8914 SHA-1: 7eaf5c30afc1639897e53c65e18c106af98044cf SHA-256: f43b2fee96362bcd7e4270851cef8a9306315d4697b976f6c40c9f890ae1b337
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to known malicious infrastructure, specifically promoting free Robux and game hacks. The document body and extracted URLs strongly suggest a phishing or scam attempt to lure users to malicious sites. While no scripts were explicitly extracted, the presence of malicious redirector links and the ML classifier's high confidence indicate a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 2

  • 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.
  • 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 http://netcdn.co/app/431946152/joshy-how-to-get-free-robux-site-youtube.com-game-hack In PDF document text
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/roblox-samurai-simulator-hack_GM431946152.pdfIn PDF document text
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/free-robux-generator-without-verify_GM431946152.pdfIn PDF document text
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/roblox-free-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/roblox-jailbreak-hack-infinite-rob-cash_GM431946152.pdfIn PDF document text
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/roblox-cheats-to-get-robux-and-tix_GM431946152.pdfIn PDF document text
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/limited-universe-robux-hack_GM431946152.pdfIn PDF document text
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/how-to-get-any-username-in-roblox-hack_GM431946152.pdfIn PDF document text
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/free-random-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/arrest-me-and-get-free-robux-roblox-jailbreak-roblox-live_GM431946152.pdfIn PDF document text
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/hack-robux-hack-hack_GM431946152.pdfIn PDF document text
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/hack-grynny-roblox_GM431946152.pdfIn PDF document text
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/robux-code-2021-free-game_GM431946152.pdfIn PDF document text
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/free-robux-please_GM431946152.pdfIn PDF document text
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/free-roblox-accounts-with-limiteds_GM431946152.pdfIn PDF document text
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/how-to-hack-roblox-accounts-and-get-passwords-2021_GM431946152.pdfIn PDF document text
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/how-to-make-your-own-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/coin-master-free-link_GM406889139.pdfIn PDF document text
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/cheat-roblox-fr_GM431946152.pdfIn PDF document text
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/roblox-free-dominus-promo-code-2021_GM431946152.pdfIn PDF document text
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/cerberus-roblox-exploit-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_off0000317c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x317C 22520 bytes
SHA-256: e98e85ec87b9917db0953dd0a1332162893689f7010de218f867cc00d8caa70d
font_01_sfnt_off000063b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63B9 20104 bytes
SHA-256: 924f1b7b0c32efbc9e3ffe3a9dd9611b2fda9ae697a65bc6aeb428d7ad36d124

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