Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9c212baac335530…

MALICIOUS

PDF

44.6 KB Created: 2020-03-25 11:38:41 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 54d22fdf59caf8a2194ca3a21576f5e5 SHA-1: a81cf5025aa026c4bf80b5aed0152083d6960b3f SHA-256: e9c212baac335530354f1e04604ba4faeccfd25becbee0aa2e57072657dbdb6d
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which point to other PDFs with numeric slugs, indicating a link farm. The primary URL, http://uwfsam.com/uploads/1/3/0/4/130476263/130476263.html#refining+composition+skills+answer, suggests a lure related to 'composition skills'. The heuristic 'PDF_SEO_LINK_FARM' confirms the presence of a mass external PDF link farm, with 'thewillowdalefarm.com' being a dominant host. This pattern is commonly used to redirect users to malicious websites or distribute further malware.

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://uwfsam.com/uploads/1/3/0/4/130476263/130476263.html#refining+composition+skills+answer
    • http://thewillowdalefarm.com/uploads/1/3/0/3/130379063/1525670.pdf
    • http://armandomoralesalamillo.com/uploads/1/3/0/7/130739817/79f6911bab.pdf
    • http://gonewline.com/uploads/1/3/0/4/130477007/zuritakexotonos.pdf
    • http://431775997417950473.com/uploads/1/3/0/6/130639181/sidojunetizok-xasagufuzapiva-vogeseredafakef.pdf
    • http://www.vlassolutions.com/uploads/1/3/0/6/130604429/biduke_xaroduluv_pamedasofu.pdf
    • http://muadatnenlongan.com/uploads/1/3/0/3/130313235/napilinuvobazufoneke.pdf
    • http://bentonoglesby.com/uploads/1/3/0/6/130639032/6921132.pdf
    • http://farezinvestmentgroup.com/uploads/1/3/0/2/130291783/1442343.pdf
    • http://wanderlustphotobus.net/uploads/1/3/0/5/130588584/1737189.pdf
    • http://anwarfoods.com/uploads/1/3/0/6/130620557/2590738.pdf
    • http://mail.yearofgames.com/uploads/1/3/0/9/130969841/bimafupazinedik-fusobazoviwu-samagimitiz-lisuzenujejo.pdf
    • http://offthegrid24.com/uploads/1/3/0/7/130738741/faneb_veditegojonax_nijolixa.pdf
    • http://naturalqueenstudios.com/uploads/1/3/0/7/130739789/3436930.pdf
    • http://initsplacepdx.com/uploads/1/3/0/5/130550848/9933280.pdf
    • http://sapmii.studio/uploads/1/3/0/3/130312973/logopivuzunoba.pdf
    • http://mta-sts.technospiritual.net/uploads/1/3/0/6/130639710/xavipufapabolegu.pdf
    • http://anitagoodidea.com/uploads/1/3/0/7/130776046/2292239.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_off000083e5.bin
738535b592e4dd8e6b4d15d79c01e0e4517840dc5ae4e6d1d72ee35a01abe3cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83E5 8580 bytes

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