Malicious PDF — malware analysis report

Static analysis result for SHA-256 b96704e2e71ae181…

MALICIOUS

PDF

34.3 KB Created: 2020-04-05 13:23:28 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 903d2187ae0a66f673f3c40e044595d8 SHA-1: 7045cca3edf22a4c06a2b4b18b3af5cb290160f7 SHA-256: b96704e2e71ae18116d5c9d8391af0d6ac40d971ffb2dd828ee85639a767eda6
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a link farm or SEO manipulation tactic. The document body contains text related to free textbooks, likely a lure to encourage users to click on the embedded links. No scripts were extracted from this sample.

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://eagleeyesurveillancesc.com/uploads/1/3/1/4/131437619/131437619.html#libros+de+texto+gratuitos+secundaria+2018+pdf
    • http://passioncenteredconsulting.com/uploads/1/3/0/5/130541103/3a61ff173b5.pdf
    • http://nmpestcontrol.com/uploads/1/3/0/4/130483494/nogutexifinipap-kapuwujofotole.pdf
    • http://my-yahoo-online.com/uploads/1/3/1/4/131452815/fakasofanasab.pdf
    • http://gallatinvalleyharvest.com/uploads/1/3/0/3/130379305/9e249c839.pdf
    • http://ferreirasociados.com/uploads/1/3/0/5/130588744/ridejirawijisa.pdf
    • http://nataliabustamantefotography.com/uploads/1/3/0/5/130551967/manotapexupafel_pedegevozuga.pdf
    • http://real-woods.com/uploads/1/3/0/6/130621597/pawonufapixozaf-jikumazixodub-lojukodifigixu.pdf
    • http://michaelwellsart.com/uploads/1/3/1/4/131407377/6170b61.pdf
    • http://lifelineinsurance.info/uploads/1/3/0/2/130273850/d7ce7b5db51e.pdf
    • http://oakhillcontractorsllc.net/uploads/1/3/0/6/130604988/6715161.pdf
    • http://brauchconsumerlaw.com/uploads/1/3/0/6/130604791/xefesosalewi.pdf
    • http://mammafysio.se/uploads/1/3/0/8/130874493/kaxonogozekes-sugukivexex-xelijene-jopejinax.pdf
    • http://bradshomeimprovements.com/uploads/1/3/0/7/130740490/63879.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000060cb.bin
2d739b14a8383290f460efda865b8d21c8c521492601819baeb5e4a8264da558		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60CB 8880 bytes

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