Malicious PDF — malware analysis report

Static analysis result for SHA-256 281245a213f36bf9…

MALICIOUS

PDF

36.0 KB Created: 2020-04-12 01:53:18 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: aa04395678102c00ef409896b90e65b8 SHA-1: 1a61f0849c96671c439b8612393666f52fcf1af7 SHA-256: 281245a213f36bf9d11f73913e8bdd9ab1f557df95a4dab7308165cafc2df136
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 to various domains, many of which appear to be part of a link farm designed to obscure the true malicious intent. The document body, while containing a seemingly innocuous title, is heavily obfuscated and likely serves as a lure. The primary attack pattern involves directing users to these external resources, which are likely hosting malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

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://fluxworldwide.info/uploads/1/3/0/8/130814630/130814630.html#how+to+draw+pua+from+moana+step+by+step
    • http://freesellerclasses.com/uploads/1/3/1/4/131406608/1481071.pdf
    • http://learninglifestyleproject.net/uploads/1/3/0/2/130291596/fanulejorewi_wovutudedibis.pdf
    • http://ftharrodjazzartsfest.com/uploads/1/3/1/1/131163514/7283573.pdf
    • http://clearisacolor.com/uploads/1/3/0/2/130270955/wujerabewef-sojufana-masobi.pdf
    • http://tomcan.net/uploads/1/3/0/6/130621393/3dc93ff4.pdf
    • http://thewreckingcru.com/uploads/1/3/0/6/130603740/wijixomunolumo-nafufutem-nisuxosox-vojupini.pdf
    • http://einslearningcenter.com/uploads/1/3/0/3/130323324/915978.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_off00006510.bin
ba13cc72c89b101374a6b89867699b3b30107dacdfaef3a083fb00156fd4d939		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6510 8020 bytes

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