Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea0fba825fbb0ece…

MALICIOUS

PDF

53.0 KB Created: 2020-03-20 09:43:13 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 482397f3274ce07ebf68d8989caae3b3 SHA-1: 1f7e76224ee30d13999367e2be140ad9e95f38ef SHA-256: ea0fba825fbb0ece3c6d4576c8a8c8f9d670ec6de7b5753d5df9bd5d5b127eb4
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to PDF files hosted on various domains. The document body text, though partially corrupted, contains references to 'Macroeconomia libro samuelson' and the wkhtmltopdf generator, suggesting a lure to a website related to economics. The primary heuristic 'PDF_SEO_LINK_FARM' indicates a technique to artificially inflate search engine rankings or distribute content across many domains, often used for malicious purposes. The embedded links likely serve to redirect users to malicious sites or download further payloads.

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://rabaisenligne.com/uploads/1/3/0/5/130550758/130550758.html#macroeconomia+libro+samuelson
    • http://bernardobellostudio.com/uploads/1/3/0/2/130288710/3220049.pdf
    • http://bestofwachusett.com/uploads/1/3/0/4/130435609/c06af2a21b0254.pdf
    • http://taylorbehavioral.com/uploads/1/3/0/5/130538859/fedunarewijifu.pdf
    • http://coryscupboard.com/uploads/1/3/0/7/130739549/4781533.pdf
    • http://pianowelder.com/uploads/1/3/0/3/130323271/74279b5.pdf
    • http://solutionsforenergy.co.uk/uploads/1/3/0/5/130550961/5937716.pdf
    • http://mail.annieivanova.com/uploads/1/3/0/7/130739139/e90e7a7a.pdf
    • http://tereayersmusic.com/uploads/1/3/0/5/130551463/1511559.pdf
    • http://chicagovoicetalent.com/uploads/1/3/0/2/130271016/54ae68dddbf04.pdf
    • http://mta-sts.mx.lifeofpen.com/uploads/1/3/0/6/130640029/9077c174d87e9e.pdf
    • http://www.mrhendersonclass.com/uploads/1/3/0/8/130874588/b6935a00d6406.pdf
    • http://9i5xt.bpmtc.com/uploads/1/3/0/5/130590310/rorilenaxamabasagal.pdf
    • http://nicholebertucci.com/uploads/1/3/0/6/130604580/2e9a2.pdf
    • http://www.mike-nicholls.com/uploads/1/3/0/7/130739924/rofesefokinixo.pdf
    • http://www.saloteflorist.com/uploads/1/3/0/7/130739363/juzawuwalixawokodajo.pdf
    • http://www.madmediamistress.com/uploads/1/3/0/6/130639093/3675438.pdf
    • http://justfuego.com/uploads/1/3/0/5/130543010/81574b13.pdf
    • http://mta-sts.lifsstill.net/uploads/1/3/0/7/130775651/8a9ce.pdf
    • http://pinthis.co/uploads/1/3/0/5/130551434/4055703.pdf
    • http://tashedynasty.com/uploads/1/3/0/7/130738623/4758003.pdf
    • http://www.musicbytommyward.com/uploads/1/3/0/3/130323455/6127832.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_off0000a46c.bin
74061d944933131f4cc9cbd18d170c8c7d67d85db416d12113e0c0cd2a1565e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA46C 9360 bytes

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