Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ccc0d01774edc03…

MALICIOUS

PDF

36.6 KB Created: 2020-03-19 08:40:57 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 565c58ad290fed0bbb4c6364fade22ae SHA-1: a6b15d8f9438a607576a00be0c8a7a4fda49854a SHA-256: 6ccc0d01774edc0334321f864915ba81dde6e67fad72fdccb6f08bdf81d63f00
96 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The ML_NYX_PDF_MALICIOUS heuristic also strongly indicates malicious intent. The document body contains obfuscated text and URLs, suggesting an attempt to disguise the malicious nature of the links and potentially evade detection.

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://mycndp.com/uploads/1/3/0/3/130323968/130323968.html#exploracion+xi+par+craneal
    • http://boozybakerygames.com/uploads/1/3/0/4/130478868/zadexusuz.pdf
    • http://www.brycegordonelectrical.com.au/uploads/1/3/0/3/130323219/de397c609219ada.pdf
    • http://www.kaszazzwithjuliehill.com/uploads/1/3/0/6/130621498/rovetebowi-xaguzize-jakobi.pdf
    • http://robbenoptics.com/uploads/1/3/0/2/130289652/dutofav-falogepi.pdf
    • http://www.balancewithbrooke.com/uploads/1/3/0/6/130604230/marikurilesavi_wazibelivopiwep.pdf
    • http://webdisk.carterandcompanybroker.com/uploads/1/3/0/8/130874254/gorijexufuvalut-doripo-jububomegawor-tejofodofubas.pdf
    • http://loveleaving.com/uploads/1/3/0/5/130588751/wozexivakorugofuk.pdf
    • http://hostmaster.data-responsibility.org/uploads/1/3/0/6/130639763/zabijefis.pdf
    • http://ostmakeup.com/uploads/1/3/0/4/130435611/5158592.pdf
    • http://nordicxenia.com/uploads/1/3/0/5/130550703/jidis_paxezuvopamiwa_malowi.pdf
    • http://cakeinaboxco.com/uploads/1/3/0/2/130271234/91b92bc1626a3.pdf
    • http://lililalune.com/uploads/1/3/0/5/130543272/libobapali.pdf
    • http://www.mybdtc.com/uploads/1/3/0/6/130621032/ganivula-zajazuxa-xutetubu-deximetof.pdf
    • http://summercollege4kids.org/uploads/1/3/0/3/130312925/kuxewinotikedemurona.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_off00006710.bin
0ea15043b58808f2450645618716ee50687d91434d75a7fb6381da02c4ad44c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6710 7780 bytes

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