Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0619f3523c454ad…

MALICIOUS

PDF

45.3 KB Created: 2020-04-26 03:25:03 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 8e3032ef4d4d6f45f1466dc9f1da3f59 SHA-1: a39ca54f5a0cba5522eb0c8f07fb2c12383dbfd6 SHA-256: c0619f3523c454adb2253daf90d269738f2a97f89d9c5901bb54fbbe547587aa
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to other PDF files hosted on various domains. This indicates a link farm or SEO manipulation tactic. One of the embedded URLs, http://malecon95sadecv.com/uploads/1/3/0/7/130776042/130776042.html#alvin+and+the+chipmunks+2+songs, is directly referenced in the document body. The heuristic 'PDF_SEO_LINK_FARM' strongly suggests this is a malicious pattern designed to distribute or obscure malicious content. No scripts were extracted from this sample.

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://malecon95sadecv.com/uploads/1/3/0/7/130776042/130776042.html#alvin+and+the+chipmunks+2+songs
    • http://toren-capital.com/uploads/1/3/0/3/130323594/f49d42022577.pdf
    • http://rideseries.com/uploads/1/3/0/4/130483924/615987.pdf
    • http://impactbiomedical.com/uploads/1/3/0/4/130476074/9357789.pdf
    • http://heartcentreawareness.com/uploads/1/3/0/7/130739076/28117f8c8d9c9.pdf
    • http://dalmares.org/uploads/1/3/0/4/130436236/guwiwufo.pdf
    • http://davidhoover.net/uploads/1/3/0/5/130590467/0166b.pdf
    • http://elyrialaw.org/uploads/1/3/0/2/130271152/dalonukefudo.pdf
    • http://weiheassociates.com/uploads/1/3/1/3/131378796/bezubola_gadegodaza_difurazof_rowotefuba.pdf
    • http://oraclemaritime.com/uploads/1/3/1/6/131607805/2158858.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_off00008bae.bin
bfd2ce16bea290b8891faf13fd26b4f86da7d4e3ff88eca293092833754c7261		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BAE 7672 bytes

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