Malicious PDF — malware analysis report

Static analysis result for SHA-256 51fc67f746ff3b45…

MALICIOUS

PDF

42.7 KB Created: 2020-03-24 05:07:22 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 64c868932b113bfeb3f03b64951eabca SHA-1: d892522c94e5bcdc7fc4dd0be756fd38e910f57a SHA-256: 51fc67f746ff3b453095775fdac9d60c2dd94c356ede9c90c59fe730deba0edd
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 PDF files hosted on different domains, suggesting a link farm or SEO spam tactic. The document body contains text related to 'Estudios de mercado metodos' and mentions wkhtmltopdf, indicating it was likely generated programmatically. 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://ankezimmermann.ca/uploads/1/3/0/2/130270887/130270887.html#estudios+de+mercado+metodos
    • http://dykewhistle.com/uploads/1/3/0/7/130739210/wuxememakopok.pdf
    • http://dressple.com/uploads/1/3/0/4/130476215/8047275.pdf
    • http://www.melodicrecall.com/uploads/1/3/0/9/130969405/a60e6c2fe.pdf
    • http://baseballexams.com/uploads/1/3/0/5/130588988/tezewovozilejuz_legodapa.pdf
    • http://premier-escapes.com/uploads/1/3/0/4/130435783/pinelunazoke.pdf
    • http://fromthegreen.org/uploads/1/3/0/7/130775143/jumegupaxarik.pdf
    • http://mail.muddyriverhomestead.com/uploads/1/3/0/5/130544754/pemuzupepopufi.pdf
    • http://runsodak.com/uploads/1/3/0/5/130590339/eb086875b.pdf
    • http://frogtowncomputer.com/uploads/1/3/0/8/130814161/6211453.pdf
    • http://tonygallippi.com/uploads/1/3/0/7/130776805/mifarekilemutufodi.pdf
    • http://www.newhavenmo.com/uploads/1/3/0/9/130969586/zupoku-jofolofit-vagikozemorutun.pdf
    • http://www.immigrationlawvirginia.net/uploads/1/3/0/4/130483583/wodunolikoxipamog.pdf
    • http://scottsvalleywrestlingacademey.org/uploads/1/3/0/6/130603916/3296647.pdf
    • http://everythingcholera.com/uploads/1/3/0/8/130814346/9168923.pdf
    • http://drdom.com.au/uploads/1/3/0/5/130551231/fojojazumenek.pdf
    • http://ascensionone.com/uploads/1/3/0/5/130590596/rigepesimenip.pdf
    • http://365superiortraining.com/uploads/1/3/0/9/130969004/robodidoti_gexuzudifu_zoladafu.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_off00007abf.bin
a6b1d7834d5f7758c274872e7df5b4881c5d3df414603abde61d4dac94b43b8b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7ABF 9288 bytes

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