Malicious PDF — malware analysis report

Static analysis result for SHA-256 c93d765719df20cc…

MALICIOUS

PDF

44.5 KB Created: 2020-03-28 03:48:49 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 8c11ebae46e2b8ec815c838776a93d1c SHA-1: b645de894d9665437c25c5b6c2506a64a6a36968 SHA-256: c93d765719df20cca78f33b1983f50caab58782972eb3742854e0b1aac55b760
62 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to similarly structured URLs on different domains. This suggests a link farm or SEO spam campaign. The document body, though heavily obfuscated, contains a URL related to medical information, likely a lure to encourage clicks. The presence of numerous external links indicates a malicious intent to redirect users to potentially harmful 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://fareastcleaning.com/uploads/1/3/1/4/131406607/131406607.html#icd+10+for+bacterial+conjunctivitis+right+eye
    • http://cosmicascensions.com/uploads/1/3/0/7/130776200/dcb354e9bfd7.pdf
    • http://9f60bbd001.com/uploads/1/3/0/6/130620897/728504e6ae0690.pdf
    • http://greenjuiceontherocks.com/uploads/1/3/0/4/130494172/muvamopafolegolezul.pdf
    • http://keynesadviser.com/uploads/1/3/0/5/130551011/nibaguvo.pdf
    • http://412catawba.com/uploads/1/3/0/2/130289335/6084096.pdf
    • http://truthsout.com/uploads/1/3/0/7/130740389/vovunopot.pdf
    • http://emailmarketing507.com/uploads/1/3/0/4/130488732/kojuzekunalex-ruzovawe-mogomavatofafo.pdf
    • http://www.seniormedica24.pl/uploads/1/3/0/5/130545365/45f9d45.pdf
    • http://phonic88.com/uploads/1/3/0/8/130874430/1978215.pdf
    • http://autodiscover.smoochsoaps.com/uploads/1/3/0/7/130776889/9270632.pdf
    • http://biwifoods.com/uploads/1/3/0/6/130639682/1fb2ff0aa60b0.pdf
    • http://ecuador-seo.com/uploads/1/3/0/6/130639024/gesomu.pdf
    • http://kasiagurgul.com/uploads/1/3/0/2/130291355/xosorusapatere.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_off000085b7.bin
563048ec4eca49cafc57b0906a3a52c946189ba0c6e16f077d921e2b1ebf91f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85B7 8088 bytes

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