Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1df9a527c3247a8…

MALICIOUS

PDF

66.8 KB Authoring application: Inkscape
MD5: 77558f5d0bda69116ae42e3f3eb6455d SHA-1: f8e4b2ac9e72443f0c18445d8a945a8fff9c8599 SHA-256: d1df9a527c3247a8a8ec80116f407c0954ea7f7affc910a418d9d6a111e27b0f
128 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the presence of embedded URLs suggest a phishing or malicious download attempt. The document body, though heavily obfuscated, contains references to URLs that are also listed as embedded URLs, reinforcing the link-farming attack pattern.

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.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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://sim.ts3update.info/uploads/2020/01/28/9d3a2e.pdf
    • https://wefexatipenikeb.weebly.com/uploads/1/3/0/3/130313433/aed1b478.pdf
    • http://agm85.icu/uploads/2020/01/28/8989193.pdf
    • http://easttexasdoula.com/uploads/1/3/0/4/130483634/1528781.pdf
    • http://janobem.audiostart72.icu/uploads/2020/01/28/nemipabugagerafag.pdf
    • http://theleawoodfamilydentist.com/uploads/1/3/0/4/130488398/130488398.html#yume+nikki+tvtropes

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000010e7.bin
6d3f71dfb8f11fd6927228d954c3cc7b16bc8316b47399396bbd9f0164c1b540		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10E7 8432 bytes

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