Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c0a60580c22182a…

MALICIOUS

PDF

34.1 KB Created: 2020-04-03 19:07:53 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: ef7bbf86f4fd15aeeca0fd318e9b08c5 SHA-1: dfb1c88690e650c887f5388d63603e7c8d6793bb SHA-256: 4c0a60580c22182a6d47c21c22691b956cffb53618f102f2173d5d07005b99ed
84 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which are numerically slugged and hosted on disposable domains, indicative of a link farm or SEO spam tactic. The document body also contains a URL related to 'adobe cs3 serial number', suggesting a lure to a phishing or malware distribution site. The presence of a QR code lure further supports a phishing or 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://impact-active.com/uploads/1/3/0/4/130483244/130483244.html#adobe+cs3+serial+number
    • http://redtopdesigns.com/uploads/1/3/0/8/130814197/nuxiwiw-nafadon-sadigumema.pdf
    • http://bathstudentdigs.com/uploads/1/3/0/8/130874455/bugad-potaki-radatidub-lokorufufaza.pdf
    • http://apbolling.com/uploads/1/3/0/5/130589328/xomejulirulav.pdf
    • http://mickfarm.com/uploads/1/3/0/8/130814285/8c02490b66ef1c.pdf
    • http://casarefugiopa.org/uploads/1/3/0/3/130379228/678065.pdf
    • http://therapybybrennamccolm.com/uploads/1/3/0/6/130621917/jorobin.pdf
    • http://darkislandmusic.net/uploads/1/3/0/5/130539002/podusimugunazis.pdf
    • http://bencrisa.com/uploads/1/3/0/9/130968960/suwurara.pdf
    • http://dustydoorandgate.com/uploads/1/3/0/4/130488983/6577379.pdf
    • http://guidequestconsulting.com/uploads/1/3/0/7/130738622/vusekomu.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_off00005ae3.bin
048193daf981530c024edae977ff61095ee75e09ebae24c3cd89ea4b8ea16831		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AE3 8564 bytes

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