Malicious PDF — malware analysis report

Static analysis result for SHA-256 5996d232f992efc9…

MALICIOUS

PDF

48.6 KB Created: 2020-05-06 15:40:56 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 8f5b4bbb4a7baf76239df17e174dc9fb SHA-1: 13a93caed3e039acd3b6ccddbc33733227fd6f5c SHA-256: 5996d232f992efc9065c7310d08146bc26179e29129b62e06fee26e2528c545a
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many pointing to other PDF files hosted on various domains. This suggests a link farm or a distribution mechanism for further malicious content. The presence of the 'PDF_SEO_LINK_FARM' heuristic firing strongly supports this. No scripts were extracted from this sample, limiting the ability to determine the exact payload or further actions.

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://windows-defender.com/uploads/1/3/0/3/130379821/130379821.html#pain+agitation+delirium+guidelines+2018+summary
    • http://giftingitup.com/uploads/1/3/0/4/130483303/wezomagez.pdf
    • http://alaskatravelconcierge.com/uploads/1/3/0/5/130545021/vadulipi_wazelilezemuv_bukadedufo.pdf
    • http://borrowedbridals.com/uploads/1/3/0/7/130738499/barobubon.pdf
    • http://juliemzook.com/uploads/1/3/1/4/131437116/kidezijofavif.pdf
    • http://jerrygibbons.studio/uploads/1/3/0/4/130488920/85946b241e16.pdf
    • http://strongheadedindependenttoddler.com/uploads/1/3/1/3/131383342/sejow.pdf
    • http://rueyoga.com/uploads/1/3/1/4/131482954/5750965.pdf
    • http://starqualitygroup.com/uploads/1/3/0/5/130539888/rekukojit.pdf
    • http://pvff.org/uploads/1/3/1/0/131070979/reremukewa_dizipusabo_rerovubekada_gofaxomasifetup.pdf
    • http://thewilliamgranville.com.au/uploads/1/3/0/6/130620662/75065431613e.pdf
    • http://honeysisterboutique.com/uploads/1/3/0/4/130488983/takidajufawewuw-nakuw.pdf
    • http://constructiondm.com/uploads/1/3/0/3/130313307/fe7f9d4b36efb.pdf
    • http://aromascrips.com/uploads/1/3/0/8/130813032/dixudikogob_gexusasoti.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • 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_off0000924b.bin
313d4eaed6d02c1ec625584bf51e15c05a823d4c6ca33de071bce367cd32db2c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x924B 11100 bytes

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