Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a42e1b546accdc6…

MALICIOUS

PDF

47.3 KB Created: 2020-04-02 02:00:21 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 2cbce039350c90f8d3783f2eb8bbdde6 SHA-1: c4210f165db082a5d877106765d8e6143981e228 SHA-256: 5a42e1b546accdc6f4c72e5089fd47386de428bc5ed8a4f12379179085433a2b
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous external links, many of which are structured as a link farm, suggesting an attempt to drive traffic to potentially malicious sites. The document body, though partially obfuscated, includes a URL that appears to be part of this scheme. The ML classifier strongly indicated maliciousness, and the presence of many external links points towards a phishing or content-luring attack pattern.

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://enlightenedkatentertainment.com/uploads/1/3/0/6/130604627/130604627.html#washington+state+car+tabs+increase+2018
    • http://playpalx.com/uploads/1/3/0/7/130776562/6d0481db510.pdf
    • http://gavingateway.com/uploads/1/3/0/5/130551675/texadijepe.pdf
    • http://endthedeer.com/uploads/1/3/0/3/130323968/91f62af4d81.pdf
    • http://redneckfest.org/uploads/1/3/0/6/130604518/mefozemugivetomen.pdf
    • http://xotictantexas.net/uploads/1/3/0/7/130739658/0445d3d4d5ed04.pdf
    • http://macdesignthinking.com/uploads/1/3/1/3/131383650/fuwig.pdf
    • http://mymaplehillfarm.com/uploads/1/3/0/2/130289658/071af382ab85a.pdf
    • http://humain.ch/uploads/1/3/0/5/130541950/kuzaxugel-fopajaxusuxatu-kikesojubab.pdf
    • http://mobilityfamily.com/uploads/1/3/0/7/130776344/vedewojoxipomut.pdf
    • http://asociaciondemusicoterapia.org/uploads/1/3/0/7/130738711/nofadumex.pdf
    • http://maiattorneyatlaw.com/uploads/1/3/1/0/131070166/lekurus.pdf
    • http://vassautos.com/uploads/1/3/0/3/130313854/vazivutote_pudoki.pdf
    • http://heroesaliados.com/uploads/1/3/0/4/130483213/wezoxutirewasidibaga.pdf
    • http://piecedtogether.org/uploads/1/3/0/9/130968956/xekezu-pomedewuva-gagupuvap.pdf
    • http://ccinvesting.co/uploads/1/3/0/5/130589444/3d4f18286cd5f.pdf
    • http://proballerreport.com/uploads/1/3/0/6/130604532/lalimo-xigurax.pdf
    • http://closerviews.com/uploads/1/3/0/8/130814280/cfa71.pdf
    • http://lindamiyahiraart.com/uploads/1/3/1/3/131383841/f494af81364.pdf
    • http://villagecraftsmensavannah.com/uploads/1/3/0/8/130873853/burutiroxadi.pdf
    • http://trefundraising.com/uploads/1/3/0/7/130738892/543471.pdf
    • http://asuriabogadoytraductor.com/uploads/1/3/0/5/130546657/tozonafozegelegexu.pdf
    • http://2chicksandacookie.com/uploads/1/3/0/6/130604279/defoxadezefajuz.pdf
    • http://joydanielle.net/uploads/1/3/0/9/130969950/0f90d09.pdf
    • http://theroyalchandlery.com/uploads/1/3/0/5/130588651/zujinopewidex.pdf
    • http://sbuckling.com/uploads/1/3/0/5/130551390/tipojisozev_gawogijasele_fipakuvod.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_off00008f4b.bin
34c1b9248e02ae3f3c8ae06cfa881aca600fcb4fb3f2c7133bde9cab48076996		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F4B 8276 bytes

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