Malicious PDF — malware analysis report

Static analysis result for SHA-256 86dfcd948b7f36ec…

MALICIOUS

PDF

44.9 KB Created: 2020-06-07 10:32:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7ecd5de8f17134cd1e9566e7d6d7850b SHA-1: a3f7fe5c78741bb4a0324ff54e324dbb07f90d93 SHA-256: 86dfcd948b7f36ecc7b3ee915b264fd8dccf81f4bd13e648672f052c8beec662
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of external links, indicating a link farm strategy. The primary heuristic identified a "PDF_SEO_LINK_FARM" which suggests the document is designed to manipulate search engine results or direct users to potentially malicious content. The embedded URLs are the highest priority IOCs, as they are the intended destinations for the user. 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://buttemtnews.com/uploads/1/3/0/7/130775275/130775275.html#high+stakes+kotor+2
    • http://loughrynnselfcateringaccommodationmohill.com/uploads/1/3/0/5/130589217/xivuvosilikewawa.pdf
    • http://legalpt.com/uploads/1/3/1/4/131406480/b3e7e2a4b.pdf
    • http://mta-sts.mail.innovomedical.com/uploads/1/3/0/7/130776795/800288.pdf
    • http://socksthatspeak.com/uploads/1/3/0/4/130488199/pukoximax.pdf
    • http://cpanel.artlabriola.com/uploads/1/3/0/7/130738537/b70bcbc3b99879.pdf
    • http://mobilecontentz.org/uploads/1/3/1/3/131383204/47b6b87a.pdf
    • http://rowdybartending.com/uploads/1/3/0/9/130969459/d372d7.pdf
    • http://bruce-lee-roy.com/uploads/1/3/0/7/130775169/4179278.pdf
    • https://wuzuduf.files.wordpress.com/2020/06/17578031837.pdf
    • https://tavatolu.files.wordpress.com/2020/06/liwaduru.pdf
    • https://denorawe.files.wordpress.com/2020/06/vamuvosevakogal.pdf
    • https://duwadunox.files.wordpress.com/2020/06/15345897747.pdf
    • https://bokisutedex.files.wordpress.com/2020/06/kuwodolonoxajizizeza.pdf
    • https://ravejewawuwo.files.wordpress.com/2020/06/kovalumonedafib.pdf
    • https://wojimuretake.files.wordpress.com/2020/06/demegofenazope.pdf
    • https://tupawev.files.wordpress.com/2020/06/37234407862.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_off000081b3.bin
e921c9b0fd9842a37cdb043bce4631cfbfd69f5d9e0ba271812377eb64d7ad7d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81B3 11244 bytes

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