Malicious PDF — malware analysis report

Static analysis result for SHA-256 3aa926480a9e379d…

MALICIOUS

PDF

38.7 KB Created: 2020-06-14 03:37:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4d5a25a3dfad391399a13f0e6933436a SHA-1: 5c5e563cfdcde087a64cb29d48d1c508bb5d2839 SHA-256: 3aa926480a9e379dbeccd759309a8301e35687f90264b47a49231b4af5a9b57a
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The document body text, though partially corrupted, includes the phrase 'Lettre de recours universit pdf', suggesting a lure. The primary intent appears to be directing users to a network of linked PDF files hosted on various domains, likely for SEO spam or to distribute further malicious content.

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://yogalifesf.com/uploads/1/3/0/5/130541272/130541272.html#lettre+de+recours+universit%25C3%25A9+pdf
    • http://wcd-ont9trwo.mgh-r.ch/uploads/1/3/0/2/130289571/2605054.pdf
    • http://emilysinhomeservices.com/uploads/1/3/0/6/130621456/mulevapowenalor_zexovularimupiw_buzuxava_zulero.pdf
    • http://2014.financialpermaculture.com/uploads/1/3/0/6/130604467/7239299.pdf
    • http://wakerwoodbutcher.com/uploads/1/3/0/2/130291531/sexezazujolap_talilaxururolik_tefofeja.pdf
    • http://webmail.conrah.wales/uploads/1/3/0/3/130379239/4666703.pdf
    • http://tierneyzullo.com/uploads/1/3/0/5/130551795/vokanurolasi-riwemepakekedu-rasizuf-sopapumivuve.pdf
    • http://paulgibsonhypnosis.co.uk/uploads/1/3/0/4/130483799/lobipetegajob.pdf
    • http://starcompanyug.org/uploads/1/3/1/0/131071019/6517923.pdf
    • https://bikaluvamu.files.wordpress.com/2020/06/95843379668.pdf
    • https://nonifaxaxe.files.wordpress.com/2020/06/goguxelur.pdf
    • https://vufodidov.files.wordpress.com/2020/06/9696106487.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_off00006794.bin
32a9f5bc098e72cc0874cba14d690cb23272967450fc96297c78122b6409e008		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6794 11732 bytes

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