Malicious PDF — malware analysis report

Static analysis result for SHA-256 696b0c60d30fdea4…

MALICIOUS

PDF

40.9 KB Created: 2020-03-10 13:40:49 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 1faa62ae8ca69d6bc064a522b54256bd SHA-1: e09b488c1bc4034e5c657523252aba098e688475 SHA-256: 696b0c60d30fdea4ed6520d4e74d0ec682e2866d565b118d35a03cc9625e379a
96 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, 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 embedded document body text, though partially corrupted, contains references to the URLs, reinforcing the attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://encore00035.voyagerwebsites.com/uploads/1/3/0/2/130270977/130270977.html#ion+exchange+chromatography+principle+and+instrumentation
    • http://thecurrentcafe.com/uploads/1/3/0/6/130620467/pavodinixi_vozasad.pdf
    • http://thehudsonmill.com/uploads/1/3/0/6/130604243/7142524.pdf
    • http://susanstravelincentivetrips.com/uploads/1/3/0/2/130272582/34fb58fe.pdf
    • http://saaqld.com/uploads/1/3/0/6/130620981/2743412.pdf
    • http://webcolysistrata.com/uploads/1/3/0/8/130874585/gulazuxonu.pdf
    • http://internetmarketrise.org/uploads/1/3/0/3/130323328/4431f5c23234c98.pdf
    • http://clarazul.com/uploads/1/3/0/6/130604148/xukabovoma.pdf
    • http://cpanel.cardiffoceangroup.com/uploads/1/3/0/8/130874077/4932313.pdf
    • http://www.hed-e.com/uploads/1/3/0/7/130739063/1503508.pdf
    • http://positivitymagic.net/uploads/1/3/0/5/130547924/zupozixijewonisafez.pdf
    • http://elliescrayoncollective.com/uploads/1/3/0/7/130776262/savugebetazujam.pdf
    • http://trackyourcalls.com/uploads/1/3/0/5/130589360/tobozafofizumuwede.pdf
    • http://restorationhealingministry.com/uploads/1/3/0/6/130621785/a3c81be567cf1.pdf
    • http://webmail.choferenmadrid.com/uploads/1/3/0/7/130739719/nugol-vamukezugakutog.pdf
    • http://navinatural.com/uploads/1/3/0/6/130639337/fewepejewaj.pdf
    • http://chrisdrake.horse/uploads/1/3/0/5/130543064/1155346.pdf
    • http://charthouseps.org/uploads/1/3/0/5/130551517/1507188.pdf
    • http://caloundralittleathletics.com/uploads/1/3/0/6/130603882/2195512.pdf
    • http://placentiaimmigration.com/uploads/1/3/0/8/130814110/jetidimegezuxape.pdf
    • http://www.kghypnobirthingsouth.com/uploads/1/3/0/6/130621140/eee4d967cc8.pdf
    • http://blueflamerecords.com/uploads/1/3/0/5/130588589/3fe4c1b3b6f.pdf
    • http://k-singh.info/uploads/1/3/0/5/130550684/jebonop_figonuruju_fexilavuzedizas_bikokiwiteto.pdf
    • http://startmysoulbasedjobsearch.com/uploads/1/3/0/4/130483329/kigipominetijoris.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_off000074f1.bin
30199b85be4623dabd45a84fe82cfee48429bb31e6f0622d0fab7f4b3061e408		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74F1 7828 bytes

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