Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e01e131529d62a8…

MALICIOUS

PDF

35.3 KB Created: 2020-04-07 10:07:02 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 32ad7ddafbcf994227074d78b6664ce1 SHA-1: 4fda6377527d5a216fc334632d347a6ef7bfb8c6 SHA-256: 6e01e131529d62a833eaf5400de8ebb974166ab1e757a806a139dd0dc1df919f
96 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded external links, identified by the 'PDF_SEO_LINK_FARM' heuristic. The document body text, though partially obfuscated, includes a URL that is also present in the list of extracted URLs. This suggests the primary purpose is to redirect users to a network of websites, potentially for SEO spam or to host further malicious content. No scripts were extracted from this sample.

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://naturaltolife.com/uploads/1/3/0/4/130435870/130435870.html#cuales+son+las+polis+mas+importantes+de+grecia
    • http://livinglifetothemaks.com/uploads/1/3/0/6/130639444/punujasimi.pdf
    • http://primalmeatcompany.com/uploads/1/3/0/6/130639500/2356262.pdf
    • http://roofingmcdonoughga.com/uploads/1/3/0/5/130588164/xuvafazikifetosiru.pdf
    • http://acherrymoon.com/uploads/1/3/1/4/131409546/1086954.pdf
    • http://amandalpitts.com/uploads/1/3/0/6/130639791/fonojereke.pdf
    • http://biyouotaku.net/uploads/1/3/0/8/130814245/4f90d549b.pdf
    • http://mcclaffertygortahork.com/uploads/1/3/1/4/131407514/daxes.pdf
    • http://todosobrecarpas.com/uploads/1/3/1/4/131407316/fovipujuzesorikudis.pdf
    • http://climaticsbvba.com/uploads/1/3/0/2/130270826/313d8df9ca8d.pdf
    • http://familyaffairsclothing.com/uploads/1/3/0/5/130588216/941775.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_off000064cd.bin
6ac2f84bde2d2cf839bb6bd14e595522776955541457f2f777fd36c8a23699e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64CD 7456 bytes

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