Malicious PDF — malware analysis report

Static analysis result for SHA-256 89938191312d24c9…

MALICIOUS

PDF

59.4 KB Created: 2020-04-12 05:13:37 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 8aba5bbc4ab9e0f9df9b3e4539116b8e SHA-1: cea9554ab19d066b8dad3cc72ce47c5946996876 SHA-256: 89938191312d24c94b7eeb8525fd730e764e1b7d2db96402c5b38b6f1e5dd085
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. These links point to various PDF files hosted on different domains, suggesting a link farm or distribution mechanism. The document body contains garbled text and a reference to the URL http://zephyrhome.com/uploads/1/3/0/6/130639407/130639407.html#prayers+the+devil+answers+by+sharyn+mccrumb, which is also listed as an external URI. The primary purpose appears to be directing users to these external resources.

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://zephyrhome.com/uploads/1/3/0/6/130639407/130639407.html#prayers+the+devil+answers+by+sharyn+mccrumb
    • http://rhworkplace.com/uploads/1/3/0/2/130287936/fibere_luwuvenilurojig_zires.pdf
    • http://jarofthreads.com/uploads/1/3/0/4/130490250/2c5304089.pdf
    • http://barcelosdelivery.com/uploads/1/3/1/3/131379971/c9227851.pdf
    • http://myjohnsongroup.com/uploads/1/3/0/5/130550827/joboseradurukokito.pdf
    • http://ponyfan.com/uploads/1/3/0/7/130739093/9874525.pdf
    • http://gpspropertysolutions.com/uploads/1/3/1/3/131380086/tewerarosuvo-mufuvoxaju.pdf
    • http://pennymayobrien.com/uploads/1/3/0/9/130969981/2493833.pdf
    • http://goemchoswad.com/uploads/1/3/0/4/130435763/6b744ec0828e.pdf
    • http://cubent.org/uploads/1/3/0/5/130551991/c8f879e91b8c3b7.pdf
    • http://lightbrightandcozy.com/uploads/1/3/0/7/130775228/2926d10b009d75.pdf
    • http://vibramhk100.com/uploads/1/3/0/4/130488513/9768399.pdf
    • http://derekbrowell.com/uploads/1/3/0/2/130271259/4031318.pdf
    • http://marcusmarchconsulting.com/uploads/1/3/0/7/130740196/dibimun.pdf
    • http://milestoneco.net/uploads/1/3/0/4/130490421/d4c295.pdf
    • http://marcusmarchcon
    • 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_off0000ad34.bin
38a2883f0d867f9aed033b66f3f42623402a98728b2aeb5975127d1894fe6022		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAD34 7556 bytes
font_01_sfnt_off0000ca91.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCA91 16036 bytes

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