Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f8c10f2bf540af9…

MALICIOUS

PDF

37.9 KB Created: 2020-03-21 15:06:40 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 040f9fb074cb89ee756e934a9e1aa55a SHA-1: 2c1be8fad5598b547e856d85887f259e9086cdee SHA-256: 1f8c10f2bf540af9b091546227f476960925cd17afc4fdbe3aff276636795c7c
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF contains a large number of external links, many of which are numerically or generically named and hosted on unrelated domains, indicating a link farm or SEO spam tactic. The document body, though partially corrupted, references 'Butterball indoor electric turkey fryer instructions', suggesting a lure to disguise the malicious intent. The ML classifier strongly flagged this PDF as malicious.

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://gotrsummit.com/uploads/1/3/0/3/130313320/130313320.html#butterball+indoor+electric+turkey+fryer+instructions
    • http://cpanel.leescrossroadmbc.com/uploads/1/3/0/8/130814675/7108306.pdf
    • http://mindmasterssociety.com/uploads/1/3/0/3/130313376/xitit.pdf
    • http://needlelessconnector.com/uploads/1/3/0/5/130551257/situvawojoboxazesemo.pdf
    • http://www.tangotemptress.com/uploads/1/3/0/6/130605084/toxasovukevonin_resikorato_tezadavo_fosemo.pdf
    • http://wickedslushwest.com/uploads/1/3/0/5/130589020/lurifemenakiv_wobur_sopefamidotuwi.pdf
    • http://acutabovelawncareservice.com/uploads/1/3/0/6/130605505/jaxog.pdf
    • http://www.tropicalifitness.com/uploads/1/3/0/6/130639656/dutuxi.pdf
    • http://familiesfeedinghope.com/uploads/1/3/0/6/130640024/1b87cbfcb93.pdf
    • http://towndive.com/uploads/1/3/0/6/130620782/9768371.pdf
    • http://ca.selindoalpha.com/uploads/1/3/0/2/130288406/1077865.pdf
    • http://annamolnarjewellery.com/uploads/1/3/0/4/130476065/e09df1a00120.pdf
    • http://growingingracedaily.com/uploads/1/3/0/5/130588606/d15a4420c43aa.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_off00006a90.bin
192031badd8e1651825fd90ce1767209a84f63784f6d766a5d4d3d1bb588e591		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A90 8720 bytes

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