Malicious PDF — malware analysis report

Static analysis result for SHA-256 f805c1253477366a…

MALICIOUS

PDF

40.7 KB Created: 2020-05-09 00:05:10 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: c17eb689c94990d01ec26a3581eb6e38 SHA-1: 4f5dfa013337ac030b71004798eb2a47cdb8484f SHA-256: f805c1253477366a9e60c31fff034e04428b9b462f0e48a30da81935262d4f8a
92 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 point to other PDF files hosted on various domains. This behavior is indicative of a link farm or SEO spam technique, often used to distribute malicious content. The primary heuristic 'PDF_SEO_LINK_FARM' strongly suggests this malicious intent. The document body, though partially corrupted, contains text related to creating mailing lists and mentions the wkhtmltopdf tool, suggesting a lure to disguise the malicious link distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://tdstechnicaldevelopmentsoccer.com/uploads/1/3/0/2/130288551/130288551.html#create+mailing+list+from+google+spreadsheet
    • http://1lovecuisine.com/uploads/1/3/1/0/131069935/0678004561.pdf
    • http://playpalx.com/uploads/1/3/0/6/130621507/pimen-vibogenas-teluxaduji.pdf
    • http://classicaldressageacademy.com/uploads/1/3/1/0/131069935/zesajiduvi-mukebizufita.pdf
    • http://pointvertpm.com/uploads/1/3/0/8/130813999/56caafa1.pdf
    • http://aspirecycling.eu/uploads/1/3/0/6/130639254/dopimazol.pdf
    • http://justinwalkercommunications.com/uploads/1/3/0/6/130621912/xelusixomep_vokuvow.pdf
    • http://barcelonaappartement.com/uploads/1/3/0/2/130273982/budosiwanulup.pdf
    • http://amazonery.com/uploads/1/3/0/8/130874314/7492596.pdf
    • http://begininglacevamaret38.com/uploads/1/3/0/4/130478123/0fe7d9036a.pdf
    • http://marshallondemandtv.net/uploads/1/3/0/6/130640239/wosuduwuxib_wafezedizere.pdf
    • http://jvsonscustombuilders.com/uploads/1/3/0/7/130740371/zupagibuzaz-zesujugima-kugozopofi.pdf
    • http://youinchrist.com/uploads/1/3/0/4/130436399/luwok.pdf
    • http://commonwealthcongress.com/uploads/1/3/0/4/130476661/gakovapamabebida.pdf
    • http://cleanpony.com/uploads/1/3/1/0/131070602/7426474.pdf
    • http://mcgilltransportllc.com/uploads/1/3/1/6/131636825/lodojedajuwurom.pdf
    • http://reemstechnology.com/uploads/1/3/1/0/131070611/milamifug_zetepapela.pdf
    • http://bitcoincent.org/uploads/1/3/0/6/130604517/0840f938c2b7ad9.pdf
    • http://happytrailsdogwalkers.com/uploads/1/3/0/6/130604295/409c073e46bc4e7.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • 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_off000073a0.bin
f9a7d852aa56c5f5b4721c18cfa30f3326200ece9b607f8e55018ce3d2179929		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73A0 10640 bytes

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