Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba61e93af5a38e0f…

MALICIOUS

PDF

39.3 KB Created: 2020-06-19 21:00:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 00d48e5eaf54f9d7908a637822ff02e4 SHA-1: 9e344e54ab1eebdd73036677f20f14da655e7b3e SHA-256: ba61e93af5a38e0f6249bac6e1b5c437ff53ff499b57242c14202d293008f8fb
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 User Execution: Malicious File

This PDF file was identified as malicious by an ML classifier. It contains a large number of external links, many of which point to other PDF files hosted on various domains, suggesting a link farm or redirection scheme. The document body contains text related to 'La soberania de dios pdf' and mentions wkhtmltopdf, indicating it may be a lure to disguise malicious content. The primary attack pattern involves directing users to a network of external URLs.

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://midvalleyfamilydental.net/uploads/1/3/1/3/131384602/131384602.html#la+soberania+de+dios+pdf
    • http://americanmuffalo.com/uploads/1/3/0/7/130775295/jiwekuxumoros_lawatanokovez_xolebune.pdf
    • http://northernlightsrescue.org/uploads/1/3/0/9/130970016/pumixixafa_koxeveruwegi.pdf
    • http://adesignedtransformation.net/uploads/1/3/1/3/131384567/xosulinur_naxowujed_gujajo.pdf
    • http://kometaniassociates.com/uploads/1/3/1/3/131383726/midujegupukunotij.pdf
    • http://skialliejohnson.com/uploads/1/3/2/3/132303019/5e1022099.pdf
    • http://living-twenty.com/uploads/1/3/0/3/130313319/4849509.pdf
    • http://leahjoyandsaintpatrick.com/uploads/1/3/0/2/130270781/5753994.pdf
    • http://webdisk.driftwoodshoresdesigns.com/uploads/1/3/0/2/130289563/4930663.pdf
    • http://kaiserair.us/uploads/1/3/0/7/130775411/6e3b8b29.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005b3f.bin
e492151db54e4e839a13c2d95e348555d765196c04b38b9533a8d9f942dd9c1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B3F 4792 bytes
font_01_sfnt_off00006b81.bin
553617744cbbc3a9666b810ab1139f248caf549f4aff4e8300fd106e6c2baacb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B81 11060 bytes

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