Malicious PDF — malware analysis report

Static analysis result for SHA-256 e938978b3ea413ac…

MALICIOUS

PDF

39.0 KB Created: 2020-04-02 10:30:38 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 3a98fc06fbb1b8a5c5055d47615c7496 SHA-1: d36b745f55a74c3bd47221a419ec96a17856a908 SHA-256: e938978b3ea413acbeb8b7c87ce37d13a126a0be9ff108f2aba0421e9cff7d3a
62 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded 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 text, while containing a title about word types, also includes the same URLs, reinforcing the idea that the primary purpose is to direct users to these external resources. No scripts were extracted from this sample.

Heuristics 3

  • 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
  • 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://labriarts.com/uploads/1/3/0/3/130323154/130323154.html#tipos+de+palabras+agudas+graves+y+esdrujula
    • http://eneduerabe.org/uploads/1/3/1/4/131438353/4b77e.pdf
    • http://049months.com/uploads/1/3/0/4/130489265/cea105ea1438590.pdf
    • http://druidrisingreiki.com/uploads/1/3/0/8/130814402/tinadad-bafenaj-jirumuxesuxaxux-xitem.pdf
    • http://studiogiurisprudenzatorinese.com/uploads/1/3/0/2/130271072/juduzemiku_xoxoran_vumejutulaw_zifewa.pdf
    • http://keiokatsale.com/uploads/1/3/0/6/130639099/486de6.pdf
    • http://crystalwelch.com/uploads/1/3/0/4/130435574/7855891.pdf
    • http://specialeventstaff.com/uploads/1/3/0/6/130620348/bd397c.pdf
    • http://rusticreflection.company/uploads/1/3/0/3/130324440/82b16907.pdf
    • http://sageartisancollective.com/uploads/1/3/0/6/130639889/25eca7e9e0bb.pdf
    • http://castellumcareer.com/uploads/1/3/0/2/130288430/wumuzuxonaxevo.pdf
    • http://cruzfamily.org/uploads/1/3/0/5/130539800/8db371e2647694e.pdf
    • http://operai.ca/uploads/1/3/0/6/130621706/7419283.pdf
    • http://javenrsotomilengh101.com/uploads/1/3/0/6/130639767/polifemowinikow.pdf
    • http://trccommons.org/uploads/1/3/0/4/130489122/ruzaserivojexa.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_off00006d88.bin
ff4b82e4eac26d71829c6cb84c9fdfdb279a1ccc2518eba3434650f83ba2514c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D88 8892 bytes

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