Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ae31127beb345fe…

MALICIOUS

PDF

40.0 KB Created: 2020-04-13 15:50:58 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 8f42b511ae675b4a1e50dd4391fbe6d1 SHA-1: 6169ef672cbbda3a4179f7293e7446bc0ecefd58 SHA-256: 9ae31127beb345fe11da14044af6f551d0af767b39e3e06d65cffa8efbb04d1a
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a link farm or SEO manipulation tactic. The document body is heavily obfuscated and contains a URL that is also listed in the extracted URLs. No scripts were extracted from this sample. The primary attack pattern involves directing users to a multitude of external PDF resources.

Heuristics 3

  • 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.
  • 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://chrisbosgraaf.com/uploads/1/3/0/6/130620372/130620372.html#el+estado+del+arte+ejemplos
    • http://peakeandfrey.com/uploads/1/3/1/1/131163977/88961ac.pdf
    • http://derouincounseling.com/uploads/1/3/1/1/131164081/8475aac.pdf
    • http://topfairfaxdentists.com/uploads/1/3/0/7/130738755/buxugogaxozakok.pdf
    • http://bogardtennis.com/uploads/1/3/0/4/130483539/zodofokaxiv_kipemogejoze_jononomalulobo.pdf
    • http://infinityhealingcenter.com/uploads/1/3/0/3/130379135/4fcfbdb98b9af0d.pdf
    • http://blueponddesigns.com/uploads/1/3/0/6/130621702/101d5fc.pdf
    • http://haventruck.com/uploads/1/3/0/5/130588861/zurul_ritab.pdf
    • http://rmassprocurement.com/uploads/1/3/0/7/130776314/52792b5b.pdf
    • http://cincityssaudiarabia.com/uploads/1/3/1/3/131381150/761e01c051.pdf
    • http://fulltaleoutdoors.com/uploads/1/3/0/4/130494059/31ad775.pdf
    • http://bfgpress.net/uploads/1/3/0/9/130969191/puwukujubal_bivuribufirotu_dikivak.pdf
    • http://jmstudiosllc.com/uploads/1/3/0/6/130603922/d87c7d.pdf
    • http://lucmaf.org/uploads/1/3/0/3/130323141/8175459.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_off00007281.bin
71161a1fd0f9dfdc433acf1b470fa9c18c771186912f0ea98da31b4c10a06a23		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7281 8780 bytes

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