Malicious PDF — malware analysis report

Static analysis result for SHA-256 d74e306cbec9dc99…

MALICIOUS

PDF

29.0 KB Created: 2020-05-26 11:47:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7da38a096dc197fe752571ed7a8cfff1 SHA-1: b48b2ff871b24d463fd40a81b50947133367de5d SHA-256: d74e306cbec9dc9948833473b29f5bd1486f39114b25a7485b15fbd11f982d77
62 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded external links to other PDF files hosted on various domains. This pattern is indicative of a link farm or SEO poisoning technique, designed to redirect users to potentially malicious content. The document body contains garbled text and metadata, but the primary malicious activity is the mass distribution of external links.

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://stuckonsweets.net/uploads/1/3/1/6/131637284/131637284.html#gay+nipple+porn
    • http://gozilion.com/uploads/1/3/1/6/131606115/bakudupij_radutunumawop_nibowago.pdf
    • http://courrierstlaurent.com/uploads/1/3/0/8/130874365/joxalekobezomat_wosefin_mukiboba.pdf
    • http://topmcars.com/uploads/1/3/0/2/130289532/subujikoniv.pdf
    • http://forsbergstudios.com/uploads/1/3/1/6/131637316/folikiji_rawil.pdf
    • http://freshenuplaundrynm.com/uploads/1/3/1/0/131070581/mamuwe.pdf
    • http://4funphotography.com/uploads/1/3/0/4/130483275/7418522.pdf
    • http://slowelab.com/uploads/1/3/0/6/130604821/7393526.pdf
    • http://mutarenetlife.org/uploads/1/3/0/2/130272616/defebed.pdf
    • http://ready-set-speak.com/uploads/1/3/1/4/131413550/4583000.pdf
    • http://youbeushave.com/uploads/1/3/1/1/131163776/3b4c5.pdf
    • http://myboringaccountant.com/uploads/1/3/1/3/131398108/8520120.pdf
    • http://typsygypsymarketplace.net/uploads/1/3/0/7/130775540/645f07bcd.pdf
    • http://transportlipigorski.pl/uploads/1/3/1/4/131406046/4130434.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_off00004916.bin
c1399c2de124391cd5b49e13f354f97bfc98327444aabeffc4bb72b48d65f6ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4916 9372 bytes

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