Malicious PDF — malware analysis report

Static analysis result for SHA-256 09a64662b4300e6b…

MALICIOUS

PDF

109.3 KB Created: 2020-03-25 02:55:50 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 81472b59a8430a66b32e236decf09072 SHA-1: 5aa2081c541d06d9a652c9747c24c2a9c070a17a SHA-256: 09a64662b4300e6ba0f454c10d6b33cd8b420adad6eab01271e04f14a7b8e74a
136 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which appear to be part of a link farm designed to mimic search results. The heuristic 'PDF_SEO_LINK_FARM' strongly suggests this is the primary function. The presence of a password protection lure heuristic indicates an attempt to bypass security controls by encrypting a payload. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://michaelshusko.com/uploads/1/3/0/6/130639895/130639895.html#biblia+de+jerusalen+pdf+1967
    • http://ccbowtiques.com/uploads/1/3/0/4/130491513/xagami_jodako_karekuvebabiv.pdf
    • http://travelinpour.com/uploads/1/3/0/7/130776368/4241511.pdf
    • http://msmohp.org/uploads/1/3/0/7/130776850/tewodugogojowadaxet.pdf
    • http://billygoatmonbassa.com/uploads/1/3/0/7/130740590/130244b8fe.pdf
    • http://haystacklaw.com/uploads/1/3/0/7/130739152/7429720.pdf
    • http://theintentionalwellnessgroup.com/uploads/1/3/0/6/130620839/5256be91d01ef01.pdf
    • http://www.nightlight8000.com/uploads/1/3/0/5/130541221/mefotujojewe_xujuwaloz.pdf
    • http://swedishchristmasinus.com/uploads/1/3/0/7/130740187/6115694.pdf
    • http://spokanefamilyheritagevideos.com/uploads/1/3/0/5/130588333/4619361.pdf
    • http://lwfreferral.com/uploads/1/3/0/5/130542972/muvumu.pdf
    • http://vegasvoicelessons.com/uploads/1/3/0/7/130740012/2220986.pdf
    • http://artintimidatinglife.com/uploads/1/3/0/5/130551249/zezibozudiniwibo.pdf
    • http://ebenezerumc.com/uploads/1/3/0/4/130476844/d0a4a748.pdf
    • http://alpinemistbernese.com/uploads/1/3/0/7/130739539/8831567.pdf
    • http://74-123-75-106.mgwnet.com/uploads/1/3/0/4/130483210/94c97537387a902.pdf
    • http://itzwrap.com/uploads/1/3/0/6/130620834/3603313.pdf
    • http://serenitemodernapothecary.com/uploads/1/3/0/5/130543588/1895528.pdf
    • http://paganbrunomontgomeryllc.org/uploads/1/3/0/3/130313081/vuwotekodujelive.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_off0001854d.bin
1a57c77fe12b10c9bb0c8c489c445e3cf24cd1f8e57bfde2735ba084419bc609		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1854D 9396 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.