Malicious PDF — malware analysis report

Static analysis result for SHA-256 deefe0718d98bfe0…

MALICIOUS

PDF

39.6 KB Created: 2020-06-16 21:40:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-08-25
MD5: 00577bf5616420ab49fb7c811a00c394 SHA-1: e9001fc7b3be4141a7da89e05348450e8e69c184 SHA-256: deefe0718d98bfe0d7e07284646572101e2eb126e8d80ad027a5bd81b16838ab
96 Risk Score

Malware Insights

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

The PDF contains a large number of external links to various domains, indicating a link farm or redirection scheme. The ML classifier strongly identified this PDF as malicious. The presence of numerous URLs suggests the primary purpose is to direct users to potentially harmful external content, rather than delivering a direct exploit within the PDF itself.

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://raleighroofingprofessionals.com/uploads/1/3/0/6/130604894/130604894.html#p5gd1+vm+s+manual PDF link annotation
    • http://kathysdelisalads.com/uploads/1/3/0/5/130551399/5408219.pdfIn PDF document text
    • http://townesquaresalons.com/uploads/1/3/0/2/130288510/riwivefovale.pdfIn PDF document text
    • http://kelianpersonalized.com/uploads/1/3/0/8/130874029/porajina.pdfIn PDF document text
    • http://trianglerism.com/uploads/1/3/1/8/131857000/lezufut.pdfIn PDF document text
    • http://maktc.org/uploads/1/3/0/5/130539074/6168f998c87.pdfIn PDF document text
    • http://loonietooniestore.com/uploads/1/3/0/6/130621125/zakirogep-koxugojemo-kajugupi.pdfIn PDF document text
    • http://andiamowithamy.voyagerwebsites.com/uploads/1/3/0/6/130639784/8904711.pdfIn PDF document text
    • http://bahamasaugustllc.com/uploads/1/3/1/4/131410939/9773237.pdfIn PDF document text
    • http://hbcommunitymortgage.com/uploads/1/3/0/6/130605048/5943015.pdfIn PDF document text
    • http://fracturedoptics.com/uploads/1/3/0/7/130775049/lokosemagetuped.pdfIn PDF document text
    • http://autodiscover.mccormicksgp.com.au/uploads/1/3/0/6/130620898/1520754.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D3C 4812 bytes
SHA-256: d71f2bcdc533a11d1cb0ef420073cbd2523b96a811da7a8e1126b801be62864e
font_01_sfnt_off00006d7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D7B 10876 bytes
SHA-256: be57923f90f77026bb4ed873bb672e55ad1a7669fe2c57abfae02d98bbaafe08