Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3570e1151748b37…

MALICIOUS

PDF

42.8 KB Created: 2020-04-06 09:24:57 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 9ad9954e4e3285bd0cf29e07161333b9 SHA-1: ac932ee633a4890103e48ef288f3cdcde60d4a21 SHA-256: a3570e1151748b3706fb1aa5997cb5b6d597941865d2ca3ec30c1304d149f40a
92 Risk Score

Malware Insights

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

The PDF file was flagged by an ML classifier with high confidence. It contains a significant number of external links, indicating a link farm or SEO abuse technique. The embedded URLs point to various domains, suggesting a distribution mechanism for potentially malicious content or phishing pages. No scripts were extracted, limiting the analysis of direct payload execution.

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://heavensentlawnmanicurist.net/uploads/1/3/0/5/130539458/130539458.html#palabras+con+jera+al+final
    • http://katanglobal.com/uploads/1/3/0/6/130620326/283805.pdf
    • http://9f60hpk050.com/uploads/1/3/0/4/130436080/dirizubopugu.pdf
    • http://spiritualityinreality.org/uploads/1/3/0/2/130271153/913009.pdf
    • http://localgrownfoods.com/uploads/1/3/1/3/131384333/def2ce97205.pdf
    • http://minhquando.com/uploads/1/3/0/4/130436078/kejukufodetude-jabosovaxotodun.pdf
    • http://teambridedecor.com/uploads/1/3/0/2/130272318/nitajebeg-bisujogumigeri.pdf
    • http://design-md.org/uploads/1/3/0/6/130639356/0cb473.pdf
    • http://teambicyclesplus.com/uploads/1/3/0/3/130313673/zabilafaku_texuzarakune_remoxob.pdf
    • http://rp-360.com/uploads/1/3/0/9/130969076/1999313.pdf
    • http://charitybasketballgame.org/uploads/1/3/1/0/131070330/3749436.pdf
    • http://ultimatedesigns.org/uploads/1/3/0/6/130622084/jejuzixuzor.pdf
    • http://greenbuiltductless.com/uploads/1/3/0/6/130604833/kejegikukemezotid.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_off00007af3.bin
fa1a470495234a5c09bb9504d104cc494a90795b8c8f4eb490ba527882a7e6c7
pdf-font-stream PDF embedded font (sfnt) at offset 0x7AF3 9536 bytes