Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad2e6e37f481e2d9…

MALICIOUS

PDF

113.2 KB Created: 2020-04-01 17:05:26 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 6416bcbce11efaed7d226dc76207ee66 SHA-1: cb4f7ca31a7c31236488e6215c7ac590f3d70ce3 SHA-256: ad2e6e37f481e2d98aa7234e021da0cfaeb24c32871b2cde457633fc78d452b1
122 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a common tactic for dropper or phishing campaigns. The ClamAV detection 'Pdf.Dropper.Agent-9307879-0' strongly suggests its role as a downloader. The document body, though partially corrupted, contains text related to educational planning, likely a lure to disguise the malicious intent of directing users to external sites.

Heuristics 4

  • 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.
  • ClamAV: Pdf.Dropper.Agent-9307879-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-9307879-0
  • 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://bkkbventures.com/uploads/1/3/0/6/130639682/130639682.html#planeacion+de+tercer+grado+de+primaria+la+entidad+donde+vivo+bloque+4
    • http://woodriverroofinginc.com/uploads/1/3/0/6/130620437/9134382.pdf
    • http://mindexpansionacademy.com/uploads/1/3/0/2/130273931/7166249.pdf
    • http://mojopix.net/uploads/1/3/1/4/131437689/sarege.pdf
    • http://gioanalu.com/uploads/1/3/0/8/130814441/6002614.pdf
    • http://major-paynes.net/uploads/1/3/0/7/130739333/pupipo-kapijasiru.pdf
    • http://ecbdistributions.net/uploads/1/3/0/4/130483426/9722237.pdf
    • http://franklinjgreene.com/uploads/1/3/0/6/130604616/2123228.pdf
    • http://carmanah.construction/uploads/1/3/0/7/130739220/jiwifal_nafot.pdf
    • http://www.quality-custom-apparel.com/uploads/1/3/1/1/131163856/wusupejixedo_pavobepukak_xuxiberivixer.pdf
    • http://visasdevisitante.com/uploads/1/3/0/5/130551241/875c3.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00016c9d.bin
5d1ea9d7323630669cc5b7984a7a9cc5868dc2a5ae9638f2c25b11baea24ffab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16C9D 2428 bytes
font_01_sfnt_off0001770c.bin
e87bec7cd28aac1611834adcea38c093ec78f231c79a18a33e8daafa4ee8850f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1770C 11468 bytes
font_02_sfnt_off00019e46.bin
f41d396822cca952cfbd405d5bde8e0e2f18d6086674570b6ba9ec772c64eb85		 pdf-font-stream PDF embedded font (sfnt) at offset 0x19E46 16184 bytes

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