Malicious PDF — malware analysis report

Static analysis result for SHA-256 24b4be4782a65ea7…

MALICIOUS

PDF

43.7 KB Created: 2020-04-11 02:05:08 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: a9ab96749c437a99683d8c7d832fceed SHA-1: 36517d1f222b13a44f821fe147394f1378348c6e SHA-256: 24b4be4782a65ea7ce2f00846ba9ef43fe2f904b216fe8126f4b51d9e88f8bf8
92 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many with numeric or generic slugs, pointing to a link farm hosted on various domains. The ML classifier strongly flagged this PDF as malicious. The primary external URI points to a page that appears to be related to job contracts, suggesting a lure for phishing or malware delivery. 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://qmhle.bpmtc.com/uploads/1/3/1/1/131164399/131164399.html#listas+contrataci%C3%B3n+sergas+2019
    • http://australiamyhome.com/uploads/1/3/1/3/131383305/mabepotobef-tabofonomiden-katigodapeta-fatunujirigi.pdf
    • http://remedialbodyescape.com/uploads/1/3/0/9/130969085/6ede8005.pdf
    • http://homemakinghannah.com/uploads/1/3/0/2/130272474/2977190.pdf
    • http://icygaze.com/uploads/1/3/0/8/130873740/6783747.pdf
    • http://carlostorreblanca.es/uploads/1/3/0/3/130313299/2135600.pdf
    • http://reggieeaves.com/uploads/1/3/0/6/130621776/zubomejuwe.pdf
    • http://proview-s3.com/uploads/1/3/0/4/130436079/lusokomejivutorewo.pdf
    • http://mobilizeonline.com/uploads/1/3/1/6/131606339/golujubatewama-sapava-zusomusu-rubagaluvexex.pdf
    • http://iyildirim.com/uploads/1/3/1/3/131379290/8312351.pdf
    • http://charityforcambodia.org/uploads/1/3/0/7/130776684/7497930.pdf
    • http://happyfulfilledlife.com/uploads/1/3/0/7/130738753/8071438.pdf
    • http://phaseiesa.com/uploads/1/3/0/5/130589240/5385172.pdf
    • http://grantcardonesalestraining.ca/uploads/1/3/0/6/130604419/loxifama.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_off000080bd.bin
5f8502205e6ccba25f44a944d69efaa4b9c5c85d0919aa072d56ae098abe08b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80BD 8908 bytes

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