Malicious PDF — malware analysis report

Static analysis result for SHA-256 785d38249f94f93b…

MALICIOUS

PDF

36.5 KB Created: 2020-05-20 13:31:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2ab54174a10414dc783caf16b458247a SHA-1: 3d777eca5ed8df0ff39824599135976617eabd58 SHA-256: 785d38249f94f93b95a7018b9dd5eb3b7ac166016af402cafc9b3316be214720
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or distribution mechanism. The ML classifier also strongly indicated maliciousness. The embedded URLs are likely used to redirect users to malicious sites or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://thesweetserendipity.com/uploads/1/3/0/8/130814293/130814293.html#satisfactory+resource+map
    • http://thedocx.com/uploads/1/3/0/3/130313489/nupibibakidekeg_nevul_vepezajigavov.pdf
    • http://demotable.com/uploads/1/3/1/4/131437412/xubikoxewexi.pdf
    • http://visualimpactlandscaping.com/uploads/1/3/1/4/131454207/wapada-xofibexari-dojapi-fimez.pdf
    • http://achinteghkaran.com/uploads/1/3/0/5/130539338/panonezikopemiwop.pdf
    • http://beardocustomcreations.com/uploads/1/3/0/7/130775922/2556284.pdf
    • http://dawnwilcoxlcsw.com/uploads/1/3/0/5/130552055/jizepulolajerovifuzo.pdf
    • http://maineroute9.com/uploads/1/3/0/5/130590756/63276.pdf
    • http://celestialcapitalpartners.com/uploads/1/3/1/6/131636584/4c99b6c652.pdf
    • http://davetrapani.com/uploads/1/3/0/6/130621818/fd1489932ad438.pdf
    • http://ashirhealth.com/uploads/1/3/1/1/131163788/keluxitow-suned.pdf
    • http://akronroofingco.com/uploads/1/3/0/5/130551013/bufom_wodiwepabarak_wopafix_puvugevululo.pdf
    • http://latticeworkinvestments.com/uploads/1/3/0/7/130739038/f7bf7ff2.pdf
    • http://armsglobal.org/uploads/1/3/1/0/131070656/suxarikolalixiw.pdf
    • http://weeksforsale.com/uploads/1/3/0/3/130323764/5129648.pdf
    • http://blackfeministwitch.com/uploads/1/3/0/2/130274319/navigu.pdf
    • http://elgonjuridischadvies.nl/uploads/1/3/1/3/131379456/f385c2b9e8e0.pdf
    • http://rainbowbridgebeads.com/uploads/1/3/0/7/130740196/5811e.pdf
    • http://zerotoleranceproductions.com/uploads/1/3/0/6/130621657/xisazimizepagela.pdf
    • http://varyvalarie.com/uploads/1/3/0/6/130639803/f925fc816888f.pdf
    • http://octopustheatricals.net/uploads/1/3/1/0/131070753/dilikedesive-zumujuxoteb-nizepew-wesenejefox.pdf
    • http://glimo.org/uploads/1/3/0/5/130540040/8216cf223.pdf
    • http://jessicaerinswanson.com/uploads/1/3/1/3/131383562/68fc59b15860e2d.pdf
    • http://georgettescloset.net/uploads/1/3/1/3/131380720/kewelegej_fuvinuxofaripep_radotigukanofow_kunumepurobak.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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/
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000612f.bin
3905b6a8358d1e79abaf9e6c18ea1cb4ae627018c69af1dca8269edfc5a2dc10		 pdf-font-stream PDF embedded font (sfnt) at offset 0x612F 10696 bytes

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