Malicious PDF — malware analysis report

Static analysis result for SHA-256 08ad094a92590353…

MALICIOUS

PDF

35.1 KB Created: 2020-03-25 08:13:08 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: d753e4718723023e15977028940bc510 SHA-1: 1ea3e9e5e9892be0f919677aecae8ad626c71839 SHA-256: 08ad094a92590353eb9afd95b5a61589ba44ebb22e2cc3a3f64b319c18f33046
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains a large number of external links, many of which are numerically or generically named, suggesting a link farm or SEO manipulation tactic. The ML classifier strongly indicated maliciousness, and the presence of embedded URLs points towards a potential phishing or redirection scheme. No scripts were extracted, but the overall structure and URL patterns are indicative of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://opssecurityagency.com/uploads/1/3/1/3/131379605/131379605.html#peavey+vypyr+ii+vip+1+review
    • http://shirleykriftergroup.com/uploads/1/3/0/5/130542902/tisitakiz-zujajogib-bejaxotudu.pdf
    • http://thebookpsychic.com/uploads/1/3/0/5/130551639/sefijafixiguvonofi.pdf
    • http://howwemove.net/uploads/1/3/0/7/130775603/e824dcd06b.pdf
    • http://guosa-language-tv.org/uploads/1/3/0/7/130740264/pezivikagavas.pdf
    • http://idealremodels.com/uploads/1/3/0/7/130740146/5247907.pdf
    • http://edensvegancafe.com/uploads/1/3/0/5/130538997/1662569.pdf
    • http://1123rd.com/uploads/1/3/0/7/130774977/39927521.pdf
    • http://legiontechconsultinggroup.com/uploads/1/3/0/6/130621277/5428783.pdf
    • http://www.theclaycactus.co/uploads/1/3/1/0/131069766/mifeped_riwodimifor_najafekovapuwom_pekaful.pdf
    • http://streamkingztv.info/uploads/1/3/0/5/130588695/fipejuzamifuno.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_off000060f1.bin
f62f266e44660e23e75c38ba3243df0ac19133beeb8ba213570ca15bbc424cff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60F1 8004 bytes

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