Malicious PDF — malware analysis report

Static analysis result for SHA-256 47101fab4e0659a8…

MALICIOUS

PDF

38.4 KB Created: 2020-04-04 14:15:31 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-15
MD5: 51d9be21800604d794efbe48e313d6f4 SHA-1: 651797dbb30610f8d36ec20623849b2fe5deefc3 SHA-256: 47101fab4e0659a8586997d6b276f679d5c044e041c9b44474da6774ffd562ea
96 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a link farm or SEO manipulation tactic. The document body, though heavily obfuscated, contains references to 'the sims 4 toddlers games4theworld' and the wkhtmltopdf application, indicating a potential lure. The primary attack pattern involves directing users to a multitude of external PDF resources.

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://le-manuel-du-tage-post-bac.fr/uploads/1/3/1/4/131438486/131438486.html#the+sims+4+toddlers+games4theworld PDF link annotation
    • http://pleasekira2d.com/uploads/1/3/0/4/130436147/486544.pdfIn PDF document text
    • http://tapisvarouge.com/uploads/1/3/0/3/130313564/xudukowamabizenodi.pdfIn PDF document text
    • http://myonlysunshine13.com/uploads/1/3/0/5/130589399/0414c78f19.pdfIn PDF document text
    • http://preview.cafechocolade.net/uploads/1/3/0/5/130550980/9629285.pdfIn PDF document text
    • http://sheabuttersmoothiesstore.com/uploads/1/3/1/4/131453618/2537505.pdfIn PDF document text
    • http://havensconstructioninc.com/uploads/1/3/0/2/130272921/rafebelofolipi.pdfIn PDF document text
    • http://blego.com/uploads/1/3/0/2/130270937/dijikapazi-fiwoletimoga-lononogizamo.pdfIn PDF document text
    • http://michiganlocalcounsel.com/uploads/1/3/0/2/130272481/aaa5b016e8.pdfIn PDF document text
    • http://precisionpointlabsolutions.com/uploads/1/3/1/4/131453993/5000872.pdfIn PDF document text
    • http://jazzysweettreats.net/uploads/1/3/0/3/130323196/sunukam-kilanekadixozes-lolegal.pdfIn PDF document text
    • http://capitolcorporatepark.com/uploads/1/3/0/2/130270987/vebibafuxu.pdfIn PDF document text
    • http://hellojean.com/uploads/1/3/0/4/130488486/rajavofakawaf-julodogef.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_off00006a25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A25 8632 bytes
SHA-256: 2d2c19b0c509025f5935ed9eb85892aae37dff06148c0f74383ebefccfb3e2d8