Malicious PDF — malware analysis report

Static analysis result for SHA-256 347d3c2104651d01…

MALICIOUS

PDF

41.2 KB Created: 2020-04-13 13:24:48 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: bf22ba7c647f495359851500af12956d SHA-1: 7dc3d5a6331d51c10bafac2439c8304ea9820f75 SHA-256: 347d3c2104651d01f58e943b65b6e78bdc9028b6fbcb13af3278f4d7ae2f6e6f
92 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a technique often used for SEO spam or to redirect users to malicious sites. The heuristic 'PDF_SEO_LINK_FARM' specifically flags this behavior, indicating a large number of external links generated for SEO purposes. The document body, though partially corrupted, contains text related to statistics, suggesting a lure to disguise the malicious intent. 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://breckroadbc.com/uploads/1/3/0/5/130589249/130589249.html#permutaciones+en+probabilidad+en+estadistica
    • http://mafitzdesign.com/uploads/1/3/0/4/130488512/segox_widud_xesagodevi.pdf
    • http://redpilltube.com/uploads/1/3/0/5/130588701/vabajomaziv-jukagexesimo.pdf
    • http://islamicbankingblog.net/uploads/1/3/1/3/131384489/jonixepewad.pdf
    • http://nhccfoundation.org/uploads/1/3/0/8/130814652/gutesikumikoxaxumexo.pdf
    • http://burgersnfreys.com/uploads/1/3/1/3/131381480/ratezisej_miwipojo_wodavikebovat_wirosotodeguven.pdf
    • http://lynefit.com/uploads/1/3/1/4/131453086/pevabiw.pdf
    • http://meowcohol.com/uploads/1/3/0/7/130775688/3650779.pdf
    • http://fembotdelivery.com/uploads/1/3/0/2/130289803/vafazosenefanola.pdf
    • http://danielmella.com/uploads/1/3/1/4/131453151/rusesar.pdf
    • http://allplating.com/uploads/1/3/0/4/130483653/dobatu.pdf
    • http://topperstemeducation.com/uploads/1/3/0/4/130483844/5860464.pdf
    • http://www.pineridgeretreatcenter.org/uploads/1/3/1/6/131636886/rulovokomifakip_kojetinag_xudosotafin_xixuvuwokifonuj.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_off000076ad.bin
e1752969280763ae79c40712547cf536e41908b30a4324bc4b8360b953216b3d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76AD 8868 bytes

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