Malicious PDF — malware analysis report

Static analysis result for SHA-256 59c2dfe548242b47…

MALICIOUS

PDF

36.6 KB Created: 2020-04-16 08:59:37 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: a03961fe143247ebcdf8afc2f2a0b639 SHA-1: c2ad9b3b0a31fd0597cee6a39caa5e21a348889f SHA-256: 59c2dfe548242b47c458424ffc44ce10de2574a1b18f8f4545bad79a95b5b00e
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

This PDF file contains a large number of external links, a technique often used for SEO poisoning or to redirect users to malicious sites. The ML classifier strongly flagged this PDF as malicious. The embedded URL 'http://rustic-chick.com/uploads/1/3/1/0/131070737/131070737.html#tweakbox+app++for+android' suggests a lure related to Android applications, likely to trick users into downloading malware.

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://rustic-chick.com/uploads/1/3/1/0/131070737/131070737.html#tweakbox+app++for+android
    • http://renew-rx.com/uploads/1/3/1/4/131409275/5392959.pdf
    • http://sysvest.net/uploads/1/3/0/9/130969699/675064.pdf
    • http://rollinghillsmidwives-nfm.com/uploads/1/3/0/3/130324004/2148253.pdf
    • http://radsport-outlet.ch/uploads/1/3/0/5/130546717/joserokazujikumelo.pdf
    • http://motusconsultancy.com/uploads/1/3/0/6/130620154/f0ab864.pdf
    • http://udembusinessweek.com/uploads/1/3/0/8/130874007/sobes-jatigom-virorixosib.pdf
    • http://digital157.com/uploads/1/3/0/4/130489650/vunaz.pdf
    • http://voroundrock.org/uploads/1/3/0/6/130605406/522bf139fa8.pdf
    • http://ctesf.org/uploads/1/3/0/6/130605462/ruradeza.pdf
    • http://spirohartfordballroom.com/uploads/1/3/0/7/130776425/nomorovubeli.pdf
    • http://accentlifeacademy.com/uploads/1/3/0/6/130639055/128815.pdf
    • http://conev.info/uploads/1/3/0/4/130488415/dekegisu.pdf
    • http://lrkreationz.com/uploads/1/3/0/2/130292014/7fa77b7c46.pdf
    • http://mathplusmore.com/uploads/1/3/0/7/130739284/9014114.pdf
    • http://musicinmysoul.pt/uploads/1/3/0/6/130620668/kabemelet-bitapofin.pdf
    • http://motusconsultancy
    • 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_off00006494.bin
9e6f20042e66ea22048b1c99f6ea4a02b990782032a591ea19779a15ac5bf4fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6494 8404 bytes

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