Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2923e80c50a3886…

MALICIOUS

PDF

48.0 KB Created: 2020-05-05 01:09:40 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 5414f1e2945539e95cc068dd39f361ca SHA-1: f5de3dbd496d03b99d4256e3be6216cf1f0c24b0 SHA-256: c2923e80c50a38865afd642acccd6535b468424d981657d25cac8a9d638bbe0c
62 Risk Score

Malware Insights

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

The PDF document was identified as malicious due to a heuristic detecting a large farm of external links. These links, such as http://everythingeastmark.com/uploads/1/3/0/3/130323523/130323523.html#carenado+c172+g1000 and http://madcitycyber.org/uploads/1/3/0/4/130483817/jigujojumoboxikumi.pdf, are likely designed to lead users to phishing sites or download further malware. No scripts were extracted from this sample, but the sheer volume of outbound links suggests a content-luring or redirection attack.

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://everythingeastmark.com/uploads/1/3/0/3/130323523/130323523.html#carenado+c172+g1000
    • http://madcitycyber.org/uploads/1/3/0/4/130483817/jigujojumoboxikumi.pdf
    • http://bayreiki.com/uploads/1/3/1/6/131606730/c97072c.pdf
    • http://kunstwurm.nl/uploads/1/3/0/9/130969424/bobuxonatawexevu.pdf
    • http://3dservicesllc.com/uploads/1/3/1/4/131453990/siruwijezodifopamuz.pdf
    • http://nashobaspeechandfeeding.net/uploads/1/3/0/7/130776684/cdf5a.pdf
    • http://pippropertymanagement.com/uploads/1/3/1/4/131438477/tenudad_rudipuloja_fopasubemutam.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • 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_off00008f78.bin
e9a3e7d7f597b55c4bc94b7d4042590f33e253986cb459c708f1858d2d3c58f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F78 10996 bytes

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