Malicious PDF — malware analysis report

Static analysis result for SHA-256 24a2fe156673a93b…

MALICIOUS

PDF

32.5 KB Created: 2020-06-02 15:23:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f5e3f34e8c9f8297ab50e1717c15a1ec SHA-1: 1b36cdc234bc470354dc68e2d4daec9ee39e6f9b SHA-256: 24a2fe156673a93b39ced92882eca0b8ec06426a71fd3c1442589952295eec15
94 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which are hosted on domains that appear to be part of a link farm. The document body, though partially corrupted, includes a reference to 'Tom and Jerry' and a URL that mirrors the document's title, suggesting a lure to entice users to click on malicious links. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious intent.

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://shop.blackgawd.com/uploads/1/3/1/4/131484395/131484395.html#tom+and+jerry+baby+puss+full+episode+in+hindi
    • http://aubreyphotographyzenfolio.com/uploads/1/3/0/5/130545249/22282971144e18.pdf
    • http://tritonracingsailingteam.com/uploads/1/3/0/4/130436362/7954501.pdf
    • http://homexdeal.com/uploads/1/3/0/7/130739456/ee0fe49d.pdf
    • http://adivasdreamjewelry.store/uploads/1/3/1/8/131857818/1e7409a0a3f9.pdf
    • http://shop.blackgawd.com/uploads/1/3/1/4/131484395/terms.html
    • http://shop.blackgawd.com/uploads/1/3/1/4/131484395/dmca.html
    • http://shop.blackgawd.com/uploads/1/3/1/4/131484395/policy.html
    • https://mixusobaso.files.wordpress.com/2020/05/40266100992.pdf
    • https://xunujodir.files.wordpress.com/2020/05/gewowudozi.pdf
    • https://jugowaxefij.files.wordpress.com/2020/05/61736325336.pdf
    • https://duzixegave.files.wordpress.com/2020/05/baben.pdf
    • https://xiwixiligut.files.wordpress.com/2020/05/wojigerilufew.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_off00005492.bin
e0ab3a8b5f044e1d45ac018f0143ffda859e125f67e8bd1527c4d6718f272fd1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5492 10048 bytes

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