Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5767c43a84b3f07…

MALICIOUS

PDF

35.6 KB Created: 2020-06-09 07:45:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 943df03bd8b2befe03b35f04c2b98f34 SHA-1: ab9b14009368e9393f801a7c4d01f23d0187d780 SHA-256: f5767c43a84b3f070d1c65f58180ab72e40c61aaf5de0fa6bae17f79fd7e6386
62 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a link farm, indicating a large number of external links within a small document. The document body, though partially corrupted, contains references to the same URLs found in the heuristics. These URLs are likely used to direct users to malicious content or for SEO manipulation. 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://crazy-life-of-me.com/uploads/1/3/1/3/131383958/131383958.html#le%25C3%25A7on+homophones+ce2
    • http://mail.californiabrittanyclub.org/uploads/1/3/1/8/131859613/siwadimexovabi_novezodul.pdf
    • http://66wtnr.salon225.com/uploads/1/3/0/3/130323475/d5ab81ac6fc.pdf
    • http://alittlefromalot.org/uploads/1/3/0/6/130604162/4e2fd4496b63.pdf
    • http://writingourstories.com/uploads/1/3/0/7/130739830/8768ab91a6b3e7.pdf
    • https://nonegek.files.wordpress.com/2020/06/18711339481.pdf
    • https://fofukev.files.wordpress.com/2020/06/miverabuv.pdf
    • https://xobaxelofutu.files.wordpress.com/2020/06/vomefa.pdf
    • https://fewipix.files.wordpress.com/2020/06/43854187731.pdf
    • https://wabufalij.files.wordpress.com/2020/06/30447236016.pdf
    • https://feguxatejixe.files.wordpress.com/2020/06/koditonulabelosizuzavode.pdf
    • https://tuvuwem.files.wordpress.com/2020/06/71236745152.pdf
    • https://fabitilo.files.wordpress.com/2020/06/33503770850.pdf
    • https://fakopibunir.files.wordpress.com/2020/06/sizurarefudirobisiz.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_off00005b68.bin
1157cd94591b446aede839432c2236a593e55688e83d2405c1c052b9af74ad12		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B68 12464 bytes

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