Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb1fa5cfda64b2cd…

MALICIOUS

PDF

36.2 KB Created: 2020-05-23 17:27:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8dc21f10310da5a8aa2e134f1e2826a0 SHA-1: 0a323b6126f5c2b2f45d3466dfbc40f1d7997797 SHA-256: fb1fa5cfda64b2cd7671a438483bb6d4dc27942f25c14df8378ef51df219e4ed
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various PDF files hosted on different domains, suggesting a link farm or distribution mechanism. The embedded document body text is heavily obfuscated and contains metadata from wkhtmltopdf, indicating it was likely generated programmatically. 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://revolution-farming.com/uploads/1/3/0/8/130873781/130873781.html#lave+moi+seigneur+mon+dieu
    • http://actforwardengraving.com/uploads/1/3/0/8/130874477/6774642.pdf
    • http://wandordevelopmentassociation.org/uploads/1/3/0/5/130540554/fosijiwib.pdf
    • http://sunburstinsurance.com/uploads/1/3/1/8/131871874/baxubipobur.pdf
    • http://kidsplace.studio/uploads/1/3/0/8/130874514/cc38a7cece76.pdf
    • http://sbl365.net/uploads/1/3/0/2/130287242/4916477.pdf
    • http://anti-anti-vaxpac.com/uploads/1/3/0/5/130590756/wagodaxalebax_nijununibuxa_rulosexovolalus_jilebapored.pdf
    • http://britishhighcommission.net/uploads/1/3/1/4/131407901/xinepanunod_xejusasumame.pdf
    • http://refugeholyyoga.com/uploads/1/3/0/8/130814328/jamotopu.pdf
    • http://bedtimemattress.com/uploads/1/3/0/7/130775979/2648272.pdf
    • http://starlightphotography903.com/uploads/1/3/0/7/130740209/rudutazunegiwijisaw.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_off00005f37.bin
d1c40c22eec79ccfe547ea98b68802f881176327de1c371ffd9f2ef624ca77fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F37 12296 bytes

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