Malicious PDF — malware analysis report

Static analysis result for SHA-256 438978a981760c98…

MALICIOUS

PDF

36.7 KB Created: 2020-04-10 15:45:12 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2021-02-09
MD5: cba21cdd23da3007ecd8d4fce071fedb SHA-1: f2a4d024465c80261eb093f6ada5a3dc2ece7259 SHA-256: 438978a981760c98f7b84c3065648189afa0c971ddbe0199cd36be9b2c9a840e
96 Risk Score

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://completeinsurancenc.com/uploads/1/3/0/6/130604933/130604933.html#snipping+tool+delay PDF link annotation
    • http://theclaytonridgeteacher.com/uploads/1/3/0/5/130590558/43a9becb.pdfIn PDF document text
    • http://madeiradecor.net/uploads/1/3/0/7/130738614/9975173.pdfIn PDF document text
    • http://topfloorsdesign.com/uploads/1/3/0/6/130621576/tamixulagisi-noxirepu-lesubugunina-jorivojewojab.pdfIn PDF document text
    • http://culturephysics.consulting/uploads/1/3/0/6/130639385/230fc9d1aac5.pdfIn PDF document text
    • http://justswapp.it/uploads/1/3/0/7/130775842/wofan.pdfIn PDF document text
    • http://sing4you.org/uploads/1/3/0/2/130289332/miratudur-zewim-witaposoduf.pdfIn PDF document text
    • http://a1specialcareltd.com/uploads/1/3/0/3/130313274/xanopubapibojux_donaxubebefodoj_jizoravaf_kizilu.pdfIn PDF document text
    • http://handyfelix.org/uploads/1/3/0/8/130873979/makufonob.pdfIn PDF document text
    • http://goprotrans.com/uploads/1/3/0/8/130814397/06b791dc5.pdfIn PDF document text
    • http://bdsmviewer.com/uploads/1/3/0/5/130551433/be1609c.pdfIn PDF document text
    • http://zackmazzoncini.com/uploads/1/3/0/3/130313123/ribasefe-doxekuvowida-kowijo-givusupip.pdfIn PDF document text
    • http://tapp360.net/uploads/1/3/0/9/130969118/nesurezezok-zezeniputuke-newikowas.pdfIn PDF document text
    • http://sophisticated-treats.com/uploads/1/3/0/4/130488574/8356461.pdfIn PDF document text
    • http://kejiahu.com/uploads/1/3/0/6/130621437/3553da7f01.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006851.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6851 7652 bytes
SHA-256: 923032cdb1af220832807ddb565655dffd80bdb1e3bd79109dbdd85329d936f5

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