Malicious PDF — malware analysis report

Static analysis result for SHA-256 40958c072c540a77…

MALICIOUS

PDF

36.1 KB Created: 2020-07-10 04:11:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fecc3e635a256f5a5be5030cbde485db SHA-1: 6ce1e29e9c03747ec71e016b57a63ec3d49d0eb5 SHA-256: 40958c072c540a775e73e1e9807f83b4f8bd0928b16142fb06d319f9616f770e
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF document contains a deceptive title and numerous links, many of which point to a link farm designed to host further malicious content. One critical heuristic identified a link to known malicious redirector infrastructure, specifically `https://ttraff.cc/wb?keyword=honeywell%20notifier%20nfs-320%20manual`. The document body, though partially corrupted, also contains this URL and other PDF links, reinforcing the lure. The presence of multiple PDF links suggests a strategy to distribute malicious content or redirect users to phishing sites.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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 https://ttraff.cc/wb?keyword=honeywell%20notifier%20nfs-320%20manual
    • http://files.juliacrist.com/uploads/1/3/0/7/130739375/ditibubogudu.pdf
    • http://files.guyingram.com/uploads/1/3/2/6/132681596/3295852.pdf
    • http://files.bbluntsheabutter.shop/uploads/1/3/1/3/131383018/bajof.pdf
    • http://files.lightningridgerealestate.com.au/uploads/1/3/2/8/132815961/tuwor.pdf
    • http://files.meverettart.com/uploads/1/3/1/4/131438571/97984eb0385b8.pdf
    • http://files.chicagosanon.org/uploads/1/3/0/8/130814104/6620f3f3.pdf
    • http://files.pvtennisclub.com/uploads/1/3/0/8/130873944/sefok.pdf
    • https://keligimeb128609187.files.wordpress.com/2020/06/vavuvobuj.pdf
    • https://zuwiseripos.files.wordpress.com/2020/07/wimaxulazut.pdf
    • https://zunenotekabe.files.wordpress.com/2020/06/12891370664.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/6733015585.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30740110423.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/39646295774.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_off00004fdd.bin
9cd8cf827fd13a6a22e85b4f65822d7b3489b9810c79e34d1d72ba58fee4bcf0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4FDD 5420 bytes
font_01_sfnt_off00006240.bin
db1e1b8ede6138755e5c98d5041b1a92756ecc1f312511e63afb5358c7c7e80d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6240 9836 bytes

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