Malicious PDF — malware analysis report

Static analysis result for SHA-256 d59411f0cd12fbfe…

MALICIOUS

PDF

50.3 KB Created: 2020-05-19 05:07:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f929364cb531b61920344f172b03627a SHA-1: 7ba92a472387d0c032395ece779277090c27e036 SHA-256: d59411f0cd12fbfeccb8136e8729fbe1b317ae75a8f93b72785cabc2debd72fe
94 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 to other PDF files hosted on various domains. This behavior is indicative of a link farm or SEO poisoning attack, designed to drive traffic to potentially malicious content. The ML classifier strongly supports the malicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://yogaandasianbodytherapy.com/uploads/1/3/1/8/131856119/131856119.html#read+darker+as+told+by+christian+grey
    • http://drpaulmagarelli.com/uploads/1/3/0/2/130289410/povenijimewin-redikusenadaf.pdf
    • http://laising-swd.de/uploads/1/3/1/3/131398268/pazatizaz_mekabur_kasolem_konox.pdf
    • http://lifeonislandtime.com/uploads/1/3/0/4/130483309/rilukej-zaledo.pdf
    • http://onewhocameback.org/uploads/1/3/1/4/131453354/rosem.pdf
    • http://autismbuddies.org/uploads/1/3/0/6/130604303/5717953.pdf
    • http://kevcarez.com/uploads/1/3/1/8/131871951/gedives.pdf
    • http://realdemocracyfund.com/uploads/1/3/0/8/130874011/temuf-vitiniriwepexat-dokefidaxomane.pdf
    • http://belleairbeachresort.com/uploads/1/3/0/4/130490277/tejopalekugi.pdf
    • http://micro-datanet.net/uploads/1/3/0/3/130313577/8591940.pdf
    • http://achieveconsulting.co/uploads/1/3/0/2/130289700/junavewi_jiravilujuw_furigawukeno.pdf
    • http://ilmcorporation.com/uploads/1/3/1/4/131409709/jadoxoz.pdf
    • http://thepaulreviews.com/uploads/1/3/0/6/130621450/9493624.pdf
    • http://restoreand.com/uploads/1/3/0/2/130287246/e6059.pdf
    • http://aristotleinvestments.net/uploads/1/3/0/4/130476722/tamoxijibojov.pdf
    • http://hardisonweekly.com/uploads/1/3/1/6/131637635/wufir_felubelawebejiw_potikidakizen.pdf
    • http://pentruhjome.com/uploads/1/3/0/5/130589182/9684502.pdf
    • http://joanberkhemer.com/uploads/1/3/0/8/130814907/6378283.pdf
    • http://kingdomstrategyconsulting.org/uploads/1/3/0/6/130620469/xijupefolef_xawopovakezipi_tofapafetugu_rijomene.pdf
    • http://chubbycheetah.com/uploads/1/3/1/4/131438316/vulemezizifafor-xavilimutine-vixiwavokubolov.pdf
    • http://txa4d.com/uploads/1/3/0/4/130489522/4887912.pdf
    • http://thecrayonstory.com/uploads/1/3/0/5/130550716/vivanixobawaxuf.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_off00009647.bin
1f6aabb7082cb8764caf4b1b3c3e0442bd1353ee1b10aa85b4ee536da84a9ada
pdf-font-stream PDF embedded font (sfnt) at offset 0x9647 11300 bytes