Malicious PDF — malware analysis report

Static analysis result for SHA-256 69475e4f7f63f3e8…

MALICIOUS

PDF

31.0 KB Created: 2020-05-04 22:45:25 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: c72c82de1152d59496c526764ec70461 SHA-1: 14fb39cbf85c97d7094fd58fa95c7bc6bcf1e60e SHA-256: 69475e4f7f63f3e879a1350579eabe15aa33eef8a7f40fc8834fb1efe5d79f80
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains a large number of embedded external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. These links likely serve to redirect users to malicious websites or to manipulate search engine results. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://cmsa1992.org/uploads/1/3/0/9/130969899/130969899.html#blue+background+full+hd
    • http://pianowithjamie.com/uploads/1/3/0/6/130604144/17042.pdf
    • http://adwokat-wroclaw.net/uploads/1/3/1/6/131637041/b6b161b9479df.pdf
    • http://cafe-aandehul.dk/uploads/1/3/1/4/131453026/xufuvijulanitusi.pdf
    • http://diva-stylez.com/uploads/1/3/0/2/130274349/f6468.pdf
    • http://cherrees.net/uploads/1/3/1/4/131437844/ae4fd96cdb1bb54.pdf
    • http://alicesbowshop.com/uploads/1/3/1/3/131379059/jebatuvawimolaluz.pdf
    • http://dairylandfiberarts.com/uploads/1/3/1/3/131384156/6500731.pdf
    • http://woodhavencruises.com/uploads/1/3/0/5/130539940/xebopegagu.pdf
    • http://akeiawellness.com/uploads/1/3/0/5/130550929/7884574.pdf
    • http://hannahegrace.com/uploads/1/3/0/8/130874064/7408697.pdf
    • http://brenthrax.com/uploads/1/3/0/6/130605175/geweniwabepabox_dimidig_pepes.pdf
    • http://val-lerieshairdesign.com/uploads/1/3/1/4/131437285/nemularojoru.pdf
    • http://shyrainephotography.com/uploads/1/3/0/5/130551739/38cd0.pdf
    • http://inlinevisionbysj.com/uploads/1/3/0/2/130273915/58cc8e0f.pdf
    • http://redwood-mc.com/uploads/1/3/0/6/130621082/zagamirusogi-kovuf-lepukuredimedag.pdf
    • http://airflowmedics.com/uploads/1/3/0/6/130621826/guwikipupidef_maboduxene_bezerar_tosanefamo.pdf
    • http://thegreenmink.net/uploads/1/3/0/5/130588342/megemubopap_davaju_kixokevuti_senori.pdf
    • http://bellabodyrecoveryretreat.com/uploads/1/3/0/5/130588880/149548.pdf
    • http://rootforcefitness.com/uploads/1/3/1/4/131408344/c1b71f3c561.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000536e.bin
25d29486092a270756e14f18ad337c69f195985ff653df4a04af359699ef63ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x536E 8832 bytes

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