Malicious PDF — malware analysis report

Static analysis result for SHA-256 6af363042963a6be…

MALICIOUS

PDF

36.3 KB Created: 2020-04-05 07:13:13 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: fa2f43dd6dbe17a1b24d3f0a23822c96 SHA-1: 7a689b0587a9922d24d83473c9ce826a8fe81c0c SHA-256: 6af363042963a6be94a2f52722a378c93e679cd34bb597943f1de68d6a15951a
96 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, presented as movie titles, which is a common social engineering tactic to trick users into visiting potentially malicious sites. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a link farm or redirection scheme. While no scripts were explicitly extracted, the PDF structure and embedded URIs strongly suggest an attempt to redirect the user to external content, likely for malicious purposes.

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://ivyreadings.com/uploads/1/3/0/6/130639356/130639356.html#watch+the+chronicles+of+narnia+the+silver+chair+full+movie
    • http://smaabergan.no/uploads/1/3/0/6/130622024/7539243.pdf
    • http://kelseyheeterwgu.com/uploads/1/3/0/6/130603930/234734fd2699348.pdf
    • http://4idealsconsulting.com/uploads/1/3/0/6/130605498/sefabeluwubepip.pdf
    • http://norwalkpainting.com/uploads/1/3/0/7/130738553/tomiwadewofazilejo.pdf
    • http://ericbarryentertainment.com/uploads/1/3/0/5/130588497/703229.pdf
    • http://haddiepiephotography.com/uploads/1/3/0/6/130604024/zazovasixu.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_off000066f7.bin
221fc3984101791833396912bce242be3f51e87488cbbd09413b05e461765ecf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66F7 7480 bytes

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