Malicious PDF — malware analysis report

Static analysis result for SHA-256 353fd34bca14c51f…

MALICIOUS

PDF

41.5 KB Created: 2020-04-25 16:53:54 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: be304f596dc82a18ffe5c926d1e3276f SHA-1: c9a09565bc1fcd7771a0b3d724da3e393a03a395 SHA-256: 353fd34bca14c51fc8bf0d83842aaf465b3ccb0386982a6db5a3dabe0702c88e
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1598.002 Host Discovery: Host Append

The PDF file contains a large number of external links, many of which are numerically or generically named, suggesting an SEO spam or link farm tactic. The document body, though partially corrupted, indicates a lure related to 'free obituary program template word'. The heuristic 'PDF_SEO_LINK_FARM' confirms the presence of numerous external links, with 'odesignsolutions.net' being a dominant host. The ML classifier also strongly indicates maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://bytecubed.io/uploads/1/3/0/4/130488311/130488311.html#free+obituary+program+template+word
    • http://odesignsolutions.net/uploads/1/3/0/7/130775015/tevumet-jepodipoda-zalivid.pdf
    • http://firetowercabin.com/uploads/1/3/0/4/130476082/2800057.pdf
    • http://livethefearlesspursuit.com/uploads/1/3/0/5/130590158/9215832.pdf
    • http://earlymuzik.com/uploads/1/3/1/4/131406799/dutebale.pdf
    • http://springtreeservice.net/uploads/1/3/0/7/130739711/nakemawupu.pdf
    • http://nax3209.com/uploads/1/3/0/7/130739433/efbad1e1c4ef0.pdf
    • http://thebarkinglot-lc.com/uploads/1/3/0/7/130739427/f1a46a327c3db.pdf
    • http://theheslayyedhour.com/uploads/1/3/0/8/130813770/kasugufesof.pdf
    • http://migrationcelebration.com/uploads/1/3/1/4/131438171/rekakokobile.pdf
    • http://the-whole-broadway-thing.com/uploads/1/3/0/5/130588633/906931.pdf
    • http://turnbyturnweather.com/uploads/1/3/1/1/131164439/gigidibipeduguvibane.pdf
    • http://cancilleriammas.org/uploads/1/3/0/7/130739291/9ac8f22af536b4.pdf
    • http://evashnaidenart.com/uploads/1/3/0/6/130603925/6803887.pdf
    • http://retrohonda.com/uploads/1/3/0/8/130873903/f9ca9200723.pdf
    • http://theheslayyedh
    • 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_off00007bd7.bin
8d7df092ae96827f93d2f41a6abd4310dd185b9c3c0fd923b6bc60ba974c7e4e
pdf-font-stream PDF embedded font (sfnt) at offset 0x7BD7 7712 bytes