Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2d68e07332dcc0b…

MALICIOUS

PDF

33.9 KB Created: 2020-04-11 11:12:04 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 9bad6fad5fe4b7bf015436cef37cf38b SHA-1: 494340beb5d7fb47b4046fc8318acd014ea3891f SHA-256: a2d68e07332dcc0b41612f65140904470c2446ab475a220d19185bddd7ffaacd
92 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which point to similarly structured URLs on various domains, indicating a link farm or SEO poisoning attempt. One of the primary external URIs extracted is http://74-123-79-26.mgwnet.com/uploads/1/3/0/7/130738778/130738778.html#jeunes+gar%C3%A7ons+en+short+tr%C3%A9s+court, which is likely a phishing or scam lure. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://74-123-79-26.mgwnet.com/uploads/1/3/0/7/130738778/130738778.html#jeunes+gar%C3%A7ons+en+short+tr%C3%A9s+court
    • http://hugwear.net/uploads/1/3/0/6/130620309/rozawuxejox_kabapuwarufigen_xusakemotolexe_zaseloxoximolal.pdf
    • http://saltofthemtn.com/uploads/1/3/0/7/130776122/74adac3b.pdf
    • http://fytlabs.com/uploads/1/3/1/4/131453053/pubexeponufu_gizororerilukom_zaworipalak.pdf
    • http://suhollc.com/uploads/1/3/1/4/131437514/2372960.pdf
    • http://istiki.com/uploads/1/3/0/4/130476632/df52f.pdf
    • http://mdaviscustomjewelry.com/uploads/1/3/0/6/130604833/xezojumumap_fumogida_vapamijiwaxadij_pukakexo.pdf
    • http://elomla.com/uploads/1/3/0/7/130739318/005e34feb.pdf
    • http://westgatefleamarket.com/uploads/1/3/1/4/131453526/6044724.pdf
    • http://fytlabs.com/uploads/1/3/1/4/131453053/pubexeponufu_gizororerilukom_zaw
    • 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_off00005a66.bin
779d7dd28464e241b00e3efb00ed7c05aa91a9f3639d062b34c0c0614222e897		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A66 9036 bytes

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