Malicious PDF — malware analysis report

Static analysis result for SHA-256 f31ac2d1dcc0b8d7…

MALICIOUS

PDF

40.7 KB Created: 2020-03-20 02:21:41 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 70ede69498697634e04d9a5e09774db7 SHA-1: 19c78509a6d9be347c7fbe8c0c344435e094a2e7 SHA-256: f31ac2d1dcc0b8d79071de9d5dbaa323bd25d414425bc43f145b5b1298734374
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The document body text, though partially corrupted, includes the phrase 'Dealing with dragons pdf download' and references the wkhtmltopdf tool, suggesting a lure to download further PDF content. The primary intent appears to be SEO manipulation or directing users to potentially malicious content hosted on numerous domains.

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://dreambiztestdrive.com/uploads/1/3/0/5/130544790/130544790.html#dealing+with+dragons+pdf+download
    • http://zgear.shop/uploads/1/3/0/6/130604335/legek.pdf
    • http://ccsb.danafarberdev.org/uploads/1/3/0/6/130620454/xinirosinavaxakipi.pdf
    • http://abby-yoga-massage.com/uploads/1/3/0/2/130289415/301cf8ff37e3.pdf
    • http://ogireo.com/uploads/1/3/0/6/130603763/fatojes_xuperikudovite_kajisu_xetafesupuroxam.pdf
    • http://enamelchannel.com/uploads/1/3/0/7/130776212/1291681.pdf
    • http://www.jgriffithwriter.net/uploads/1/3/0/9/130969001/gobumedinabom.pdf
    • http://priorityshipping.info/uploads/1/3/0/8/130813632/f0e2edcd8979d58.pdf
    • http://santanvalleysantanheights.com/uploads/1/3/0/7/130775701/pesoxatesugavu_fulan_pedigoj_lixokiraseguj.pdf
    • http://alwalsh-threeflightsup.com/uploads/1/3/0/2/130287394/dijavumunod-mogidokiwiniwe-vuxifuxapexepuw.pdf
    • http://narrinspiceandsauce.com/uploads/1/3/0/8/130813668/wojabowonipere-fowubiv-rigipo.pdf
    • http://www.matthewallenmusic.com/uploads/1/3/0/2/130289636/4f8b4e53631.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_off000077ce.bin
038949d21bb95c98015c7d32db87aba96960e3d6f0adfce8c3d1474d4d850616		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77CE 7780 bytes

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