Malicious PDF — malware analysis report

Static analysis result for SHA-256 227c739441c768a3…

MALICIOUS

PDF

38.2 KB Created: 2020-03-21 20:45:06 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 49495e8f599a8388101db264725a362d SHA-1: cf48173da9cb504ea5973df60f1835714c61f43b SHA-256: 227c739441c768a3a7e2cd57aa6ba6fbaf01366c41fb2d5cf7dc05c3ae51c362
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which point to other PDF files hosted on various domains. The document body text, though partially corrupted, suggests a lure related to medical procedures, likely to trick users into clicking these links. The heuristic 'PDF_SEO_LINK_FARM' indicates a deliberate attempt to create a link farm, suggesting a malicious intent to distribute further content or host malicious files across multiple domains.

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://growfoodnotdebt.com/uploads/1/3/0/4/130476120/130476120.html#toma+de+muestra+de+sangre+venosa+con+vacutainer
    • http://512concepts.com/uploads/1/3/0/5/130588942/sixeribakupo_lazapibun.pdf
    • http://alicelandry.com/uploads/1/3/0/8/130813829/zulorofugupexat.pdf
    • http://monngonmoi.com/uploads/1/3/0/6/130620459/sukidexilabol.pdf
    • http://www.greenstarevents.co.uk/uploads/1/3/0/4/130436054/29b57326e.pdf
    • http://www.adrisbeautystudio.com/uploads/1/3/0/5/130588727/sopim_lemekod_lejusugim.pdf
    • http://nextpathfinance.org/uploads/1/3/0/4/130483096/luporiza.pdf
    • http://sites.bayshorerealty.net/uploads/1/3/0/6/130604933/32efaec.pdf
    • http://flexjm.com/uploads/1/3/0/8/130814043/jidiwabafefesifi.pdf
    • http://www.qsortsolutions.com/uploads/1/3/0/3/130313149/ae147fe4ff.pdf
    • http://straightpipeexhaust.com/uploads/1/3/0/6/130604688/puvadapovagav-mizopajidiv.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_off00006aae.bin
63cc46dc05b7f8014a2c84d2350b85615511ae5a455dd10723937cd5ed78e773		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AAE 8596 bytes

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