Malicious PDF — malware analysis report

Static analysis result for SHA-256 d13e38c7e0238f5e…

MALICIOUS

PDF

37.2 KB Created: 2020-04-11 06:41:47 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 404bf8435ccf14403e6e2561aa867f28 SHA-1: 46cbee7d460adf1627782922c686aba6cdaea9ac SHA-256: d13e38c7e0238f5ebb6fe29db40a90a3dd4fa763f45659af529236b462e89c0a
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, a technique often used for SEO spam or to redirect users to malicious sites. The document body text, though heavily obfuscated, contains references to 'Weschler nonverbal scale of ability' and 'wkhtmltopdf', suggesting a lure to disguise the malicious intent. The primary heuristic identified a mass external PDF link farm, indicating a coordinated effort to distribute links across multiple domains.

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://nobuhotelmarbella.devsite-1.com/uploads/1/3/1/3/131378868/131378868.html#weschler+nonverbal+scale+of+ability
    • http://systemics-mx.com/uploads/1/3/0/6/130621290/butiwufov.pdf
    • http://petalstopins.com/uploads/1/3/0/6/130621462/1562523.pdf
    • http://rc-vc.com/uploads/1/3/0/3/130323984/9578550.pdf
    • http://simclear.net/uploads/1/3/0/5/130543766/dufeligiruroveg.pdf
    • http://isaesthetically.com/uploads/1/3/1/4/131437779/xabarigafo.pdf
    • http://afrotrapnpaint.com/uploads/1/3/0/6/130603760/xudonixexaxofuf.pdf
    • http://jetsettertherapeutics.com/uploads/1/3/1/4/131406837/finajoxor.pdf
    • http://boisdarcreations.com/uploads/1/3/0/4/130435939/9621968.pdf
    • http://areyouveganyet.com/uploads/1/3/0/5/130540746/kuluvivununategobugo.pdf
    • http://aactionprintingriverside.com/uploads/1/3/0/9/130969137/1627094.pdf
    • http://rubolinolegalnurse.com/uploads/1/3/0/5/130539768/4f825a19df39.pdf
    • http://franchisewav.com/uploads/1/3/1/3/131383664/revox.pdf
    • http://castsafe.com/uploads/1/3/0/8/130813514/7b4aaf3fccca.pdf
    • http://nwrilg.net/uploads/1/3/1/4/131408252/7473219.pdf
    • http://grandjourneypetlodge.net/uploads/1/3/0/2/130288453/levoxefiwuwodef.pdf
    • http://franchisewav.com/uploads/1/3/1/3/1313
    • 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_off000066ba.bin
0fe746e5259ec93b9cb69c141e176ba741cdfd5e9a66e7570422b65482d629a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66BA 8832 bytes

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