Malicious PDF — malware analysis report

Static analysis result for SHA-256 56e0ee6685560a34…

MALICIOUS

PDF

36.8 KB Created: 2020-04-03 12:20:37 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2021-02-19
MD5: f377a53a5d243b7b46d065e7ff44d2f3 SHA-1: 8dfc83f89414bf939b184f1f0c95d0d44c65dd30 SHA-256: 56e0ee6685560a34846678ec3371974034a8f6168f94041ed16477eff8075448
136 Risk Score

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.
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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://towparttimestaffresources.com/uploads/1/3/0/7/130775573/130775573.html#una+mesa+redonda+in+english PDF link annotation
    • http://thecurlcoacheducator.com/uploads/1/3/0/6/130605314/5c1bc4.pdfIn PDF document text
    • http://italianette.net/uploads/1/3/1/4/131438461/patujatagomamal_dixov_xubimifoz.pdfIn PDF document text
    • http://controversyradioshow.net/uploads/1/3/0/9/130969993/304423e8d043c.pdfIn macro / runtime command snippet
    • http://fredsdowntownphilly.com/uploads/1/3/0/6/130621675/fozesixu-domisuki-tosavomeki.pdfIn PDF document text
    • http://drjoelpearson.com/uploads/1/3/1/0/131071209/65626b5851ed9.pdfIn PDF document text
    • http://votechrisjerram.com/uploads/1/3/0/5/130551054/gaxis.pdfIn PDF document text
    • http://baby-blue-elephant.com/uploads/1/3/0/6/130604725/juvoxukuxu.pdfIn PDF document text
    • http://feedbackfoodsafetyconsultantcy.com/uploads/1/3/0/8/130873917/d55141de7f.pdfIn PDF document text
    • http://scrittorealebianchi.com/uploads/1/3/1/3/131380500/dagebewexamoj.pdfIn PDF document text
    • http://wwwjanazahkitscentralcom.com/uploads/1/3/0/6/130621299/4641934.pdfIn 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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006643.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6643 8772 bytes
SHA-256: f8f1bbef43f0bc22bdaabcdebfb9a37efc7818757e03bdfd3e887b93f2d1cdf3

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