Malicious PDF — malware analysis report

Static analysis result for SHA-256 00c6b22da2b5ea70…

MALICIOUS

PDF

42.9 KB Created: 2020-04-01 22:38:14 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 878ef3e8d85a3a4c2d38ae7a32440941 SHA-1: 788ec63e9067cdbf7b8138383ece334c68101098 SHA-256: 00c6b22da2b5ea70e7b1766ef2448ab70a275c28b3cb40ded3689a11bb3aa497
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged this PDF as malicious with high confidence. The document body, though heavily obfuscated, contains references to URLs that are likely part of a link farm or redirection scheme.

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://affinityseize.com/uploads/1/3/0/5/130590111/130590111.html#the+house+without+windows
    • http://eloriginalnightclubbar.com/uploads/1/3/0/6/130604728/setokowafiz.pdf
    • http://relentlessthreadz.com/uploads/1/3/0/8/130813899/1463189.pdf
    • http://complianceassurance.org/uploads/1/3/0/2/130287873/nabuwajiwawalu.pdf
    • http://yuma-lifestyle.eu/uploads/1/3/1/0/131070178/35fe255bd012427.pdf
    • http://ricemachining.com/uploads/1/3/0/6/130639037/tomemewevijabib.pdf
    • http://dreamhousedigital.com/uploads/1/3/0/8/130814258/jaxebilokofuvebegu.pdf
    • http://coedcademy.com/uploads/1/3/0/6/130639690/sewubibamoxilo_folufifo_gemipuxadi_pevuj.pdf
    • http://www.snottyties.com/uploads/1/3/1/3/131381101/1734958.pdf
    • http://cleverincome.info/uploads/1/3/1/4/131453847/d2339a92bbe20.pdf
    • http://auxsaveursdantan.com/uploads/1/3/0/7/130740558/rafikikesof-mepegoka-zekijo-kawew.pdf
    • http://vn-nhan-tien-quoc-te.online/uploads/1/3/0/8/130814126/najil.pdf
    • http://angkara.me/uploads/1/3/0/9/130969315/6df6be0183a26fb.pdf
    • http://southernapartmentgroup.com/uploads/1/3/0/4/130435684/sazaxupuremo_puveb_benetapipunela.pdf
    • http://eurafrasia.org/uploads/1/3/0/5/130546880/levuti.pdf
    • http://www.store.sssus.com/uploads/1/3/1/4/131454859/nebowitas_felowifikuketaz_dipudubaw_pepepog.pdf
    • http://svsm.nl/uploads/1/3/0/4/130483086/6217127.pdf
    • http://uncmastersofartsinteaching.com/uploads/1/3/0/5/130551006/tomoper-poxewasumurawo-dawetumefevax-kukofoxepedoja.pdf
    • http://almahandpans.com/uploads/1/3/0/6/130604612/kinudabo_sanitujoxepo.pdf
    • http://cinemappleby.com/uploads/1/3/0/4/130435594/9189231.pdf
    • http://thesocialmarketers.com/uploads/1/3/0/5/130589430/fewevines.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_off00007db8.bin
c23cb22906d81aa2ebd3e1cba5746fd62c434b60829c10f909f63203f9783183		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DB8 8460 bytes

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