Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9735078d40b9e3e…

MALICIOUS

PDF

41.3 KB Created: 2020-04-02 11:26:12 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 9b94fcc9d3cc0dc5a0b4154807a3a96e SHA-1: 0aa844d5350fbbe3c64c6edbf21596fde60e36cb SHA-256: c9735078d40b9e3e26560fc788b42008ed79e42cc4e11a270d518ccf36e4a442
92 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, a technique often used for SEO manipulation or to redirect users to malicious sites. The ML classifier strongly indicated maliciousness. The document body contains a mix of seemingly benign text and embedded URLs, suggesting a lure or obfuscation tactic. No scripts were extracted, but the extensive link farm points to 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://mdsinvestmentsprojectsllc.com/uploads/1/3/0/7/130739867/130739867.html#someday+love+will+find+you+lyrics+youtube
    • http://besoulfood.com/uploads/1/3/0/5/130590117/1314bd7ea.pdf
    • http://jenniferhahnphotography.com/uploads/1/3/0/4/130483858/7104800.pdf
    • http://nurjanmarabayev.com/uploads/1/3/0/6/130639811/kudodisojeg-vexepewetas.pdf
    • http://snapshotsphotography.org/uploads/1/3/0/2/130273896/8650237.pdf
    • http://heyvalerie.com/uploads/1/3/0/6/130621412/jiwime-lifulaveris-nebigoge.pdf
    • http://hitandmisshomesteader.com/uploads/1/3/0/7/130740429/dujosemutedo_kokepoxipenabob_dalimu_datatuveluwe.pdf
    • http://dreamablecreationstx.com/uploads/1/3/0/8/130874085/3779198.pdf
    • http://ariahsedibles.com/uploads/1/3/0/5/130541272/memopamakeke-womub-pirexo.pdf
    • http://coombesandgabbie.com/uploads/1/3/0/6/130605174/5b15c335efc52.pdf
    • http://stephenkolodychuk.com/uploads/1/3/0/7/130775698/sumun.pdf
    • http://fairleetv.com/uploads/1/3/0/4/130483295/937383.pdf
    • http://leadworxltd.com/uploads/1/3/0/7/130775516/ludujunavefuzudusab.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_off0000755d.bin
1a89c2fc9798453cbcd16fbc1493457bae11d1fcaf5856b65d8ee55dfd59e7de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x755D 8676 bytes

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