Malicious PDF — malware analysis report

Static analysis result for SHA-256 368df4390897fc59…

MALICIOUS

PDF

41.3 KB Created: 2020-03-09 03:41:15 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: c472f362835e9a1630e9a487a58c0d09 SHA-1: 78e006e88e6307da924dbaeabe46e5245cece5d9 SHA-256: 368df4390897fc5987e568bb4ab4c2257f1f9869e10ad91b2817396d950213e8
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of external links, a technique often used for SEO manipulation or to redirect users to malicious content. The ML classifier strongly indicates maliciousness. While no scripts were extracted, the PDF structure and numerous URLs suggest a delivery mechanism for further malicious activity.

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://gracecartercapstone.com/uploads/1/3/0/8/130874167/130874167.html#simple+sentence+structure+for+esl+students
    • http://twistingtrailsandtales.com/uploads/1/3/0/5/130544190/6637541.pdf
    • http://dj3po.com/uploads/1/3/0/5/130589061/jurigaforupukabapof.pdf
    • http://coventina.blog/uploads/1/3/0/6/130604333/dd5dbdde31b709.pdf
    • http://plumluvfoods.com/uploads/1/3/0/8/130873794/votogo.pdf
    • http://amyerspainting.com/uploads/1/3/0/7/130738707/pipixo.pdf
    • http://adhillc.com/uploads/1/3/0/3/130323155/4256714.pdf
    • http://www.anitacbaker.com/uploads/1/3/0/6/130603932/kipav-xegul-ponafuz.pdf
    • http://saratogasirens.rocks/uploads/1/3/0/6/130621330/fupet-pafakoxix.pdf
    • http://hostmaster.virtuago.it/uploads/1/3/0/8/130814448/saxomavas.pdf
    • http://amy-bracken.com/uploads/1/3/0/6/130622110/kevagekejaliruf.pdf
    • http://ashishyadav.com/uploads/1/3/0/7/130776148/1f461b5d.pdf
    • http://dedicated-1-accounting.pleasingfood.com/uploads/1/3/0/9/130969407/9828946.pdf
    • http://drakorwwdd.id/uploads/1/3/0/7/130738944/2363277.pdf
    • http://myoppconsulting.com/uploads/1/3/0/2/130274319/043253a8e7.pdf
    • http://www.rbljconsulting.com/uploads/1/3/0/2/130287932/bidozowe_kogitabibotowas_jikofabu.pdf
    • http://lifeuncorkd.com/uploads/1/3/0/6/130604205/gugipavimilexupuzim.pdf
    • http://qlcommunitychallenge.crowdrisetoolkit.com/uploads/1/3/0/3/130323962/tafuxaginaw-jinekorin.pdf
    • http://nebraskatowshow.com/uploads/1/3/0/7/130776309/7444627.pdf
    • http://lovaascabinetry.com/uploads/1/3/0/2/130270936/9013149.pdf
    • http://concourssocial.com/uploads/1/3/0/2/130274169/wosijikekewivev.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_off00007983.bin
2eeb407cf618353dd55c12614ce710b3ec31e6541acd37cd536c89d7f965dae8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7983 7736 bytes

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