Malicious PDF — malware analysis report

Static analysis result for SHA-256 abdcd4a3264d4402…

MALICIOUS

PDF

45.1 KB Created: 2020-04-04 06:13:50 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 933bd8d6a5286e82545d3454eaa05e10 SHA-1: ed7cbddb7c069f5913cf6c4ef1ac4be259f3ad31 SHA-256: abdcd4a3264d44029d0c5070fcf25044e92903c05ee7bf3b1d5e23e1fdbfeb20
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The document body, though partially corrupted, contains text related to 'Propuestas para solucionar la pobreza extrema' and references the wkhtmltopdf tool. The primary attack pattern involves directing users to a vast network of PDF files hosted on unrelated domains, suggesting a link farm or SEO manipulation tactic, potentially to distribute further malware or phishing content.

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://ajakchinger.com/uploads/1/3/0/9/130969809/130969809.html#propuestas+para+solucionar+la+pobreza+extrema
    • http://ashleykrieger.com/uploads/1/3/0/3/130323599/a3ca364403336.pdf
    • http://scoreboardsolutionsllc.com/uploads/1/3/0/5/130550825/tusukenewam.pdf
    • http://yebutton.com/uploads/1/3/0/6/130621477/1744228.pdf
    • http://brookebphoto.com/uploads/1/3/0/7/130775979/5332477.pdf
    • http://laurascaligine.com/uploads/1/3/0/6/130621100/xuson.pdf
    • http://kunselmanelectricinc.com/uploads/1/3/0/5/130550882/1148450.pdf
    • http://tickledpinkcreations.net/uploads/1/3/0/5/130551066/f595c002.pdf
    • http://beautybypureskin.com/uploads/1/3/0/8/130814579/nuriwiger.pdf
    • http://sewsimplehalifax.ca/uploads/1/3/0/6/130620453/bozaxubu-pikorowarasoj-nukobet.pdf
    • http://vallivue1970.com/uploads/1/3/1/0/131069934/4206800.pdf
    • http://sirneil.com/uploads/1/3/0/6/130604391/e2eeb2e4de5bce6.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_off00006f23.bin
54baddf3ad2f9acd85199cdf8804b53189d7571f110749f8b6bb45dcd2ec2d6b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F23 9300 bytes
font_01_sfnt_off00009054.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9054 16036 bytes

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