Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7bba42989442a24…

MALICIOUS

PDF

48.6 KB Created: 2020-04-03 08:44:04 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 6673b59de394041f02337a118bc326d0 SHA-1: 1f730329ab5e95ac953b0ac8285ba1437802f2e0 SHA-256: c7bba42989442a249db1054776981b2a3f97c913c5a99a818f714e170f1cc410
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The document body, though heavily obfuscated, contains references to URLs such as http://limestreetnutrition.com/uploads/1/3/1/3/131380504/131380504.html#mensa+norway+iq+test+meme, suggesting a lure for SEO spam or potentially malicious content hosting. 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://limestreetnutrition.com/uploads/1/3/1/3/131380504/131380504.html#mensa+norway+iq+test+meme
    • http://mta-sts.mail.ccah.ca/uploads/1/3/0/2/130271214/1071f9f7aef4.pdf
    • http://horsesfromtheheart.com/uploads/1/3/0/5/130589014/vomiduluzubatuzo.pdf
    • http://futurosdelsursa.com/uploads/1/3/0/7/130776672/711bd06c728af6.pdf
    • http://vujadedesignltd.com/uploads/1/3/0/3/130313433/5643713.pdf
    • http://omt�nk.se/uploads/1/3/0/2/130274267/4504158.pdf
    • http://chelleyseibert.com/uploads/1/3/0/3/130323471/guvuteleneram-folojarule.pdf
    • http://timstaump.com/uploads/1/3/0/3/130324419/paniwazar.pdf
    • http://eastpointtradecenter.com/uploads/1/3/0/2/130287538/7f493e27.pdf
    • http://thephilipgroup.com/uploads/1/3/0/5/130551611/kibag-toliwupekijekun-jujaxitil-xunamufibog.pdf
    • http://quivante.com/uploads/1/3/0/2/130287939/5373eab.pdf
    • http://symmetrytherapeutics.com/uploads/1/3/0/5/130588727/nakizejedijig_zakokodil.pdf
    • http://conniewoldwellnesscenter.com/uploads/1/3/0/8/130814402/9fde4.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000868c.bin
74c6de6effc6c9dfb3b570b0510354bde3bb4e5ea005826c85f3a84ed95bd521		 pdf-font-stream PDF embedded font (sfnt) at offset 0x868C 8708 bytes
font_01_sfnt_off0000a7a8.bin
f708f07a63ccb619a75eb8cd5bdc2219a8c9db21ec8ace7036d5e0b85e78f26c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA7A8 4936 bytes

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