Malicious PDF — malware analysis report

Static analysis result for SHA-256 a231b2a60afe1e01…

MALICIOUS

PDF

38.7 KB Created: 2020-04-18 16:55:07 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 061026958cf89674caf6de7bc132595b SHA-1: b32bc0fd307d74ba89ab582cf52fc05127056e61 SHA-256: a231b2a60afe1e01975cfc8b7c0f37291f290f1078684bd8dd683d18975e9fb3
92 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The document body, though partially corrupted, contains a URL that is also present in the list of external links. This suggests a link-farming or redirection scheme, likely intended to drive traffic or host further malicious content. No scripts were extracted from this sample.

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://2and3.org/uploads/1/3/0/4/130476468/130476468.html#free+printable+halloween+coordinate+graphing+worksheets
    • http://ikioskenterprise.com/uploads/1/3/0/4/130483660/xomegirixotu_riganej_pefipuvaxu.pdf
    • http://thehappylifeacademy.com/uploads/1/3/0/7/130775387/e7104d.pdf
    • http://theempressweb.com/uploads/1/3/0/9/130969053/pulopebox.pdf
    • http://justinchang.org/uploads/1/3/0/4/130494743/664794.pdf
    • http://dinsdalerealtyllc.com/uploads/1/3/0/6/130621143/7aeb2c6e65.pdf
    • http://chongai520.com/uploads/1/3/0/5/130544872/9011064.pdf
    • http://papaysolomon.studio/uploads/1/3/0/7/130775683/26b52e1862b092.pdf
    • http://donerailegrinds.com/uploads/1/3/0/2/130291474/bitesofetago_murojuxox_nudemor_jipotuvu.pdf
    • http://savageevolution.com/uploads/1/3/0/3/130324420/1822232896109.pdf
    • http://triplerexcavation.com/uploads/1/3/0/7/130776521/1591798.pdf
    • http://stephenburtcounselling.com/uploads/1/3/1/3/131383358/meguwukirenit.pdf
    • http://satnamcenter.com/uploads/1/3/1/4/131437743/wusepiva_bodejabiv_tanuj.pdf
    • http://xocobean.com/uploads/1/3/0/7/130775971/2575978.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_off0000712b.bin
8c51a28fd6c750c7444038f78724a75ac55494014043df75b4de9de2e98b1db5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x712B 7508 bytes

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