Malicious PDF — malware analysis report

Static analysis result for SHA-256 c684d13ad18293e6…

MALICIOUS

PDF

36.6 KB Created: 2020-03-20 02:56:39 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 9d7a417b6cc58984a5e458c628015d40 SHA-1: 13a4f2a4e7cfbf0162310a89cffe9585fba08467 SHA-256: c684d13ad18293e6ca2c1ffa27473107b626b69c5521f02d2799afc38b1e0264
92 Risk Score

Malware Insights

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

The PDF document contains a significant number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The document body, though partially corrupted, contains the phrase 'Triptico del sida y vih' and references to the wkhtmltopdf tool, suggesting a potential lure or information page. The primary attack pattern involves directing users to a network of linked PDF files hosted on various domains, likely for SEO manipulation or to distribute further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://holoholofuntravel.com/uploads/1/3/0/6/130604046/130604046.html#triptico+del+sida+y+vih
    • http://louvinapartment.net/uploads/1/3/1/1/131163910/d4420159d52022f.pdf
    • http://soulcherish.com/uploads/1/3/0/5/130544190/3362286.pdf
    • http://wearethepack.com/uploads/1/3/0/7/130775985/9515293.pdf
    • http://norwegianmade.com/uploads/1/3/0/5/130551468/gasumezo.pdf
    • http://propertytaxguy.biz/uploads/1/3/0/9/130968921/darepaw.pdf
    • http://www.bastaq.net/uploads/1/3/0/8/130813317/lexemifoluxexup.pdf
    • http://smirkysmokes.com/uploads/1/3/0/4/130477007/goxuvesuzekogip.pdf
    • http://cageworx.com/uploads/1/3/0/7/130740053/gokibekutulit.pdf
    • http://rohrsenfitness.com/uploads/1/3/0/4/130436078/815ffea4618.pdf
    • http://yumishop.vip/uploads/1/3/0/5/130588221/7440451.pdf
    • http://authorfreemanng.com/uploads/1/3/0/7/130776728/lejabumuxosunag.pdf
    • http://quvr.us/uploads/1/3/0/6/130621160/nusedutudonirerobab.pdf
    • http://swankyfork.com/uploads/1/3/0/5/130544001/8026345.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_off0000676c.bin
1c0ec124a0ec166508611100c91326a276939872e1f8908ff84c605a6ac2e149		 pdf-font-stream PDF embedded font (sfnt) at offset 0x676C 7736 bytes

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