Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f697e8bae1b4cb3…

MALICIOUS

PDF

44.1 KB Created: 2020-04-04 10:58:24 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 8d1475915d74fc7bbb7c19944562c481 SHA-1: 3e893e6a7713f448b35c9e631164cfd5671d7082 SHA-256: 4f697e8bae1b4cb370584ad75c24e07c85b71a8c01d0a00afb2e4e3009e38c6e
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The embedded document body text, though partially corrupted, includes a URL that matches one of the extracted links. This suggests the document's primary purpose is to redirect users to a network of potentially malicious or SEO-abused websites. 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://cavisto.com/uploads/1/3/0/6/130605273/130605273.html#mapa+citoarquitect%C3%B3nico+de+korbinian+brodmann+areas
    • http://danieltile.com/uploads/1/3/1/3/131384226/395266.pdf
    • http://fischer-travel.com/uploads/1/3/0/7/130775551/4e01b689739.pdf
    • http://replayacademy.org/uploads/1/3/0/9/130969129/xivigave_zejinataxugoze_sususiwiduj.pdf
    • http://stallforeberg.com/uploads/1/3/0/6/130604838/732b3ed1b4f2a48.pdf
    • http://jacleaningservices.net/uploads/1/3/0/9/130969372/3746285.pdf
    • http://lindengld.com/uploads/1/3/0/4/130488812/298323.pdf
    • http://assuredapplianceinstallations.com/uploads/1/3/0/5/130588188/taletevuxor-lotevemes-novetasasatuw.pdf
    • http://riverlust.com/uploads/1/3/0/7/130738863/6709461.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000061bf.bin
97fe2f71d2a90a07446c0dda09ac968e6c4f5b024c4c1ccae10daaf04bbc979d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61BF 8708 bytes
font_01_sfnt_off000081ad.bin
e91619dfd4c72a85464d95ef1ba4e67df13020651c42071bafbe521a61d9f7fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81AD 2652 bytes
font_02_sfnt_off00008b14.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B14 16036 bytes

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