Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dbc3f5c9a105cda…

MALICIOUS

PDF

43.0 KB Created: 2020-04-17 03:13:22 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 813fdb8b6c0af6711ddd37c3f5e2cc36 SHA-1: 74b3cffaeda135f26c8257e5ce7b233976515b93 SHA-256: 3dbc3f5c9a105cda8db799c987a217cdda988b9a4eeef120a0dad6afb24dadf3
62 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to domains that appear to be part of a link farm. The document body, though heavily obfuscated, contains a URL that is also present in the heuristics. This suggests the primary purpose is to redirect users to potentially malicious content hosted on these external sites.

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://lifteens.com/uploads/1/3/1/3/131398134/131398134.html#arches+national+park+guide
    • http://kalimashayekhi.com/uploads/1/3/0/6/130604530/6c6659.pdf
    • http://jacobsentape.com/uploads/1/3/0/8/130874198/xoturu.pdf
    • http://denicemarcel.com/uploads/1/3/0/9/130969461/volupuserixem.pdf
    • http://thesycamorebuilding.com/uploads/1/3/1/3/131381677/vamovexipamuvuzib.pdf
    • http://wanderations.com/uploads/1/3/0/5/130590076/3166bd5d155a9a.pdf
    • http://ecoacrefarms.com/uploads/1/3/0/8/130813701/5df7a6f8.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006dda.bin
e751e720377f6e895b078a7be08571e8d639a00ab153ea4a2f5da7f8f5e4e561		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DDA 8760 bytes
font_01_sfnt_off00008ef7.bin
b690150ea62f439655b4efa18c5588cd39df9dc3f36e087faf1c8c16d3fcbbf4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8EF7 4808 bytes

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