Malicious PDF — malware analysis report

Static analysis result for SHA-256 067a73daa1185094…

MALICIOUS

PDF

49.4 KB Created: 2020-05-22 11:46:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fb2b0beeb6d365d0cc1068fc19cd61a4 SHA-1: d03d801ef8017555d1d3d63f2803beac6cf7982d SHA-256: 067a73daa1185094dd28f6c033c8d73722f2f399a49db01db25245ed21bfc8e9
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, a technique often used for SEO spam or to redirect users to malicious sites. The ML classifier strongly indicates malicious intent, and the presence of numerous URLs suggests a campaign to distribute further payloads or phishing content. No scripts were extracted, but the sheer volume of outbound links is highly suspicious.

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://webdisk.depicentre.in/uploads/1/3/0/4/130483153/130483153.html#lumina+635+phone
    • http://sdavidsproductions.com/uploads/1/3/1/4/131437471/wadopataji.pdf
    • http://meltinglingerie.com/uploads/1/3/0/6/130621258/xilumerujadali.pdf
    • http://jordanbeamanphotography.com/uploads/1/3/0/7/130738646/sisutarenepeti-faxufile-nijumaxor.pdf
    • http://fueltechsupports.com/uploads/1/3/0/8/130873978/kenoseb_gawoxoso.pdf
    • http://webdisk.weddingstentsevents.com/uploads/1/3/0/3/130313091/213738.pdf
    • http://christ4sure.org/uploads/1/3/1/0/131070847/kipediso.pdf
    • http://hollandfoto.com/uploads/1/3/0/9/130969054/wusakebavadumugoduw.pdf
    • http://toolsbuythepound.com/uploads/1/3/0/3/130313265/suwuvusuxasuvub.pdf
    • http://davidelstonbarnes.com/uploads/1/3/0/6/130603688/425929.pdf
    • http://humpty-jumpty.com/uploads/1/3/0/4/130479171/mudivukab.pdf
    • http://hexalatam.com/uploads/1/3/1/4/131453493/mineratopafipeguz.pdf
    • http://rmichaelphoto.com/uploads/1/3/0/4/130483288/rekufumukugid-bewekisapigij-wokadipol.pdf
    • http://slinkstudio.com/uploads/1/3/0/6/130621393/gejazise.pdf
    • http://pilateswithkeira.com/uploads/1/3/0/2/130288412/zeradusatifebin.pdf
    • http://dirtyhippymovie.com/uploads/1/3/0/3/130324331/vinufet.pdf
    • http://jaimeeann.com/uploads/1/3/0/4/130476844/414fac7ad1952.pdf
    • http://e-k-m.xyz/uploads/1/3/1/0/131069838/1383968.pdf
    • http://webmail.readingpowerinc.org/uploads/1/3/0/7/130739113/xesogokodotew.pdf
    • http://simplicityaccountingllc.com/uploads/1/3/0/6/130621392/pitexojo_fesifofagubad.pdf
    • http://klifestylelistings.com/uploads/1/3/1/4/131408516/wamive.pdf
    • http://myforestgarden.net/uploads/1/3/1/4/131437425/wipogeside.pdf
    • http://davidbellmislan.com/uploads/1/3/0/5/130588913/nofiru-fifaduwikirefi-bidopenet.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/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/
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000852b.bin
22c3a5ad1a245595628188ac934a7b66d0d5f53036fc2152a69b843131bfcc7d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x852B 23936 bytes

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