Malicious PDF — malware analysis report

Static analysis result for SHA-256 8af603dde5aafae2…

MALICIOUS

PDF

40.6 KB Created: 2020-04-04 10:08:23 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 9039192f9c574656b088ca42703db120 SHA-1: 63f262ab2bae436767a9b2c9d9314fb3ba1f567c SHA-256: 8af603dde5aafae2ac7e41742e5c3a15236a93090426176d908c9e7078acd999
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 to various domains, a technique often used for SEO link farming or to distribute malicious content. The heuristic 'PDF_SEO_LINK_FARM' specifically identifies this behavior, pointing to a network of generated PDF links. The document body, though partially corrupted, contains a title related to idealism and mentions the wkhtmltopdf tool, suggesting it might be a lure document. The primary intent appears to be directing users to a network of potentially malicious or spam-related PDF files.

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://mrsuttonhistory.com/uploads/1/3/0/7/130739174/130739174.html#que+es+el+idealismo+y+sus+principales+exponentes
    • http://pomaroo.com/uploads/1/3/0/6/130620979/xuwogazo-wenonuxaxigu.pdf
    • http://marinalcoleman.com/uploads/1/3/0/5/130551294/1217161.pdf
    • http://girlsjustwannadraw.com/uploads/1/3/1/0/131070619/5e5990da5c2.pdf
    • http://abbymenagerie.com/uploads/1/3/0/4/130435819/rabopokeza_rebisogu_nubonuk.pdf
    • http://myears.net/uploads/1/3/0/4/130491418/bibamotemuxife-pogasokoliwize.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_off00007172.bin
d37929a98e59d46c543477f04543af4c5133b679e530dd031def75f0df318e76		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7172 9500 bytes

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