Malicious PDF — malware analysis report

Static analysis result for SHA-256 40e5562c4d7a780b…

MALICIOUS

PDF

39.1 KB Created: 2020-06-16 04:36:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aa62b842aa95fce1eef7f3bd6b8902dd SHA-1: 115194c7bdef0c5d31b5aa355fba8985d0378e4c SHA-256: 40e5562c4d7a780b82c911a46bd9849c103b6cd133e7b895f022bfa4b45fb0ed
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or redirection to malicious content. The ML classifier also strongly indicated maliciousness. The document body text is largely unreadable due to encoding issues but contains a URL that is also listed in the heuristics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://lovablevacations.voyagerwebsites.com/uploads/1/3/0/7/130739023/130739023.html#is+stationary+cycling+good+exercise
    • http://mcbreartylaw.com/uploads/1/3/1/3/131381706/tavanemiru.pdf
    • http://mta-sts.mx.ohiostateboxers.com/uploads/1/3/0/5/130551143/69e509929.pdf
    • http://urbanscones.com/uploads/1/3/1/4/131408024/nekubafoveg.pdf
    • http://rewiesapp.net/uploads/1/3/0/5/130550910/lozanozebid.pdf
    • http://kenplattlaw.com/uploads/1/3/1/4/131406930/5287049.pdf
    • http://kevinapabst.com/uploads/1/3/0/2/130287238/wumawuzirulob.pdf
    • http://fallinlovewithyour.life/uploads/1/3/1/6/131636570/buxorudunubadib-votatanaleleza-fazesezo.pdf
    • http://clotildebremondavocat.fr/uploads/1/3/0/4/130483499/jowezoduwagonapupoj.pdf
    • http://urgent1.com/uploads/1/3/0/6/130621776/1cb5d29b.pdf
    • http://singporehealthtalks.net/uploads/1/3/1/6/131606202/51eb078ed8ab.pdf
    • http://gcscustomerservice1.net/uploads/1/3/0/4/130483416/5986952.pdf
    • http://smokepublishing.com/uploads/1/3/1/1/131163856/busetunox-mozemud.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_off00006e9d.bin
8ce747cb34bba2750486adb52ea78026f3c3b3f69e4e926ec44aa2ee77d5c664		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E9D 10208 bytes

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