Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6dca0eaea6b8ed0…

MALICIOUS

PDF

30.9 KB Created: 2020-03-26 06:50:56 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 3a458f7ab304c384d519324fde5465d0 SHA-1: a5091dc49ee78b05e14a3008bf4d2b1fc528811d SHA-256: e6dca0eaea6b8ed0d122f4571043d07dad85c65612b887006f08261a0f72a156
102 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.001 Malicious Link: User Execution T1059 Command and Scripting Interpreter T1059.003 Command and Scripting Interpreter: Windows Command Shell

The PDF contains a large number of external links, many of which are structured as SEO-friendly PDF downloads. One prominent link, disguised as a software download, is likely a lure for users to click and download a malicious payload. The 'SE_CLICKFIX' heuristic indicates the document may also instruct users to manually execute commands, further supporting a social engineering attack vector.

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.
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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://gracecartercapstone.com/uploads/1/3/0/8/130813413/130813413.html#ms+sql+server+2012+r2+download
    • http://www.lastruggle2purpose.com/uploads/1/3/0/9/130968968/7b1263.pdf
    • http://seelenfreund.net/uploads/1/3/0/8/130874639/f3eeea3d799a8.pdf
    • http://kaysemelone.com/uploads/1/3/0/8/130814058/norurimafu.pdf
    • http://74-123-72-168.mgwnet.com/uploads/1/3/0/6/130620637/9248275.pdf
    • http://www.stbrendansreds.com/uploads/1/3/0/6/130604729/xasazoxibikuxab_jusazeme.pdf
    • http://aspireskincare.com/uploads/1/3/0/6/130620798/gipolixu-kodisa.pdf
    • http://www.ponderosahcsllc.services/uploads/1/3/0/4/130489572/7fa7d.pdf
    • http://cleancirclellc.com/uploads/1/3/0/4/130488308/8760459.pdf
    • http://chaoscaffeineandakeyboard.com/uploads/1/3/0/4/130488578/97c978.pdf
    • http://www.winslowcreative.com/uploads/1/3/0/4/130476221/sudariwubisujerej.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005324.bin
3b32ac38d88c7364d42b97390a59f9ac6b417bdd0fb1fa76b9a6516e2c3d717e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5324 7028 bytes

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