Malicious PDF — malware analysis report

Static analysis result for SHA-256 43be4a325dd92bb9…

MALICIOUS

PDF

36.1 KB Created: 2020-04-05 12:38:29 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: feee4036023c1531f5a1b2e27a0904ec SHA-1: 8674fd3f459dabf0c036217c0fe3716bb21d78d0 SHA-256: 43be4a325dd92bb9dc87468b7cec01b442385f1163e79af0238132f49d3a31db
62 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains a large number of embedded URLs pointing to external PDF documents hosted on various domains. This technique is often used for SEO spam or to distribute malicious payloads. The document body contains garbled text and references to wkhtmltopdf, suggesting it was programmatically generated. No scripts were extracted from this sample, limiting the ability to determine specific payload delivery mechanisms.

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://marikacleaningservice.com/uploads/1/3/0/5/130541656/130541656.html#palabras+con+cl+cr+y+dr
    • http://unimportantlyurgent.com/uploads/1/3/0/5/130588798/7016411.pdf
    • http://heyfanz.vip/uploads/1/3/0/7/130776655/131d2ab21dc.pdf
    • http://ibori-records.com/uploads/1/3/0/6/130605388/vodoz-zixataxedipune.pdf
    • http://walkabout.farm/uploads/1/3/1/1/131164034/vafazibesemaf.pdf
    • http://bwateeshirts.com/uploads/1/3/1/3/131384418/mozolenubefu.pdf
    • http://accessclaims.net/uploads/1/3/0/7/130740344/2ff515f5aa.pdf
    • http://abbyswonderland.com/uploads/1/3/0/5/130539458/2991984.pdf
    • http://beatrixhelenaevents.com/uploads/1/3/0/9/130969597/zoxekojelim.pdf
    • http://innovativetechsolutionstriangle.com/uploads/1/3/1/3/131381799/paxogo.pdf
    • http://wealthwavehouston.com/uploads/1/3/0/5/130552097/709a96ae.pdf
    • http://eriklindpxp.com/uploads/1/3/1/0/131070351/kizamid.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_off0000649e.bin
793d7611d83bb0f75877f60c01c86b75f25d26e7f53b6f728cc2bd3e9ca71a45		 pdf-font-stream PDF embedded font (sfnt) at offset 0x649E 8444 bytes

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