Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b9c372fcabe251c…

MALICIOUS

PDF

34.7 KB Created: 2020-06-22 09:40:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5cf5a4bf1e5256363fd98dd6a3ab6de4 SHA-1: 8005a5bac1f7df57face7fad79ab3850641d034e SHA-256: 9b9c372fcabe251c3d699a0fc17a2fe41ce7257889bcdb04466b5cddd257ca6a
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, a technique often used for SEO poisoning or to redirect users to malicious sites. The document body text, though partially corrupted, indicates a lure related to a 'follow directions trick worksheet'. No scripts were extracted, but the heuristic firings strongly suggest a link farm attack pattern. The primary IOCs are the numerous external URLs embedded within the document.

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://kentuckyarttherapyassociation.org/uploads/1/3/0/5/130544811/130544811.html#follow+directions+trick+worksheet
    • http://vishaalenterprises.com/uploads/1/3/1/3/131383204/8538fc035d4b0a.pdf
    • http://beplaydate.com/uploads/1/3/0/2/130271128/2777162.pdf
    • http://host38.carmichaelnl.com/uploads/1/3/0/8/130873990/2dc527d402b58.pdf
    • http://waasinmi.com/uploads/1/3/0/2/130273872/pakimigotod.pdf
    • http://thisoklahome.com/uploads/1/3/0/4/130491599/495807.pdf
    • http://2mogulstravel.com/uploads/1/3/1/6/131637140/romotesuxabadoj_gizul_xudisamoxaxew_xezesewovi.pdf
    • http://mail.sebolt.com/uploads/1/3/0/2/130288394/3555908.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_off00004b71.bin
43fdb9e538b290960f1881262849cfac029a880ad6028435edd0c3296d67401a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4B71 4716 bytes
font_01_sfnt_off00005b78.bin
8b5f1d069e9610c876314ca7571197637715eeffed01de7f0c670e43d3e98fd8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B78 10444 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.