Malicious PDF — malware analysis report

Static analysis result for SHA-256 d38eea39ca409fca…

MALICIOUS

PDF

39.2 KB Created: 2020-03-24 03:54:05 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 95a0adcc34c7737ec2cc76e93a34cf5d SHA-1: 1be99ed7ca687cb249db0c9743e7655f4fd230cf SHA-256: d38eea39ca409fca7d9ae0788d24a6085797f6d8211bf70b1a155d564605f645
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which point to other PDF files hosted on various domains. This pattern is indicative of a link farm or a traffic distribution system designed to obscure the ultimate destination of the user. The presence of the 'PDF_SEO_LINK_FARM' heuristic firing strongly supports this assessment. The document body contains garbled text and what appears to be metadata, but the primary malicious activity is the distribution of these external links.

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://assessoriajuridicapopular.com/uploads/1/3/0/5/130538842/130538842.html#pseint+for+linux
    • http://runrideyoga.com/uploads/1/3/0/7/130740265/wefolovafewisimup.pdf
    • http://dreamwoodworkconstructioninc.com/uploads/1/3/0/5/130588570/gekuleguzijita.pdf
    • http://seoservice.nyc/uploads/1/3/0/7/130775031/bezimaboxefew.pdf
    • http://www.edwardecker.com/uploads/1/3/0/3/130379589/95a9fc6887580a.pdf
    • http://irvinevacation.com/uploads/1/3/0/4/130483928/nowewosewub.pdf
    • http://decontrolling.floridapaints.com/uploads/1/3/0/5/130540033/felimadilibuzav_rosiwele.pdf
    • http://www.authenticbeing.net/uploads/1/3/0/5/130544384/nogawor_xenikoridajaw_vipore_fijipam.pdf
    • http://retailenlightenment.com/uploads/1/3/0/7/130775299/7582571.pdf
    • http://campuscircle.org/uploads/1/3/0/4/130435835/8060669.pdf
    • http://organicatheart.co.za/uploads/1/3/0/2/130270905/8883495.pdf
    • http://synergybusinessware.com/uploads/1/3/0/6/130621944/lezal_vekuvaza.pdf
    • http://mx.higherorderinnovation.com/uploads/1/3/1/0/131070805/loxuxewiponowa.pdf
    • http://ciencia-sociedad.org/uploads/1/3/0/2/130273743/jarudamavajibo.pdf
    • http://gardenstateenginedynamics.com/uploads/1/3/0/3/130313809/58bf8f148034.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006feb.bin
d6e30e77560f1a9c942f27b9d3fb2266800766cb3305afcfdfc7ac313dacff93		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FEB 8612 bytes

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