Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea12228fa5e557f8…

MALICIOUS

PDF

34.4 KB Created: 2021-07-05 20:54:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: fd5992dbd5bdf8cfc3f39ce597c46bbd SHA-1: ba19a036b86fc8cc8ff1704e7f36349fa2ed8f5b SHA-256: ea12228fa5e557f8e554eb8f5149724f9a271cd4d01730659b449cfd93533eba
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links, many of which are part of a link farm designed to appear as SEO content, pointing to sites offering game hacks and free items. The ML classifier strongly indicated maliciousness, and the presence of external URIs suggests the document is intended to redirect users to potentially harmful websites. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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.
  • 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 http://netcdn.tw/app/479516143/how-to-get-minecraft-for-free-on-ps4-game-hack PDF link annotation
    • http://lib.fisipumt.ac.id/repository/5-roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/cm-spins_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-free-spins-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/pastebin-roblox-vip-free-robux-no-wait_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-hack-anything-in-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-spin-app-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-hack-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-download_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-robux-no-hacks-or-inspect_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-hack-version-download_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-robux-3-steps_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-god-mode-hack_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/comment-cheater-sur-roblox-relail-ticoon_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-robux-no-verification-at-all_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/hackear-nuclear-plant-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-make-a-shirt-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-pastbin-hack_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/best-free-roblox-skin_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
font_00_sfnt_off00003138.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3138 22512 bytes
SHA-256: a92a638cd8237c6882b638bc9edf7389342e8d279fabf539bff3ba7133742ce7
font_01_sfnt_off00006358.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6358 18380 bytes
SHA-256: 0d760cff5007a49e50dd6d9a817509808964517a77fc66864bf171130f1b0882

Open this report in the interactive analyzer, or submit your own file for analysis.