Malicious PDF — malware analysis report

Static analysis result for SHA-256 f13906d3d296e2a8…

MALICIOUS

PDF

35.6 KB Created: 2021-07-01 07:03:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: ad0f43a151c9ef8b9f293542e52a2ca0 SHA-1: f2c58e9becda7372bf6ed202e7b9569e5f4c58e9 SHA-256: f13906d3d296e2a8d747966d18890d6a7e9ed17595dfdae04b4ae4c122d19218
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links and document body text promoting free Robux and game hacks, directly linking to malicious redirector infrastructure. The 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic confirms the malicious nature of the embedded URL. The ML classifier also flagged the document with high confidence. The document's content and the identified malicious URL suggest a phishing or scam attempt to lure users to a site that likely hosts malware or further exploits.

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 http://netcdn.co/app/431946152/how-t-get-free-robux-2021-site-youtube.com-game-hack In PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/gamesofficenet-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/pastbin-robux-hacks-for-free_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb//repository/get-2021-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/free-spins-coin-master-november-2021_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/free-coin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/free-robux-2021-hack_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/hacks-de-roblox-prueba_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/oprewards-com-roblox_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/roblox-jailbreack-hacks_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/coin-master-hack-spins-and-coins-unlimited-free-download_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/coin-master-hack-online-android_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/roblox-cs-go-hack-download_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/hack-roblox-2021-roblux_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/how-to-change-your-roblox-username-for-free-2021_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/coin-master-free-spins-link-2021-no-verification_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/roblox-xbox-360-download-free_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/coin-master-34-4-hack-download_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb//repository/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb//repository/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb//repository/free-coin-master-coins_GM406889139.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_off000030ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30ED 22520 bytes
SHA-256: c0db6ac2cd0ddb092f578b9d0abde893d2daf48a5fcefa398411bbae2c51f3dc
font_01_sfnt_off00006340.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6340 19992 bytes
SHA-256: d8489a9972ee819bfb80806e63834348b00efe0184b3ba71a1f8f2a801f5a4bb

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