Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d072c19242c54f2…

MALICIOUS

PDF

50.7 KB Created: 2020-03-29 10:21:09 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 3bf4080a71d90a20201b4d39d98c8eb7 SHA-1: 9e5b3322caa5189c6a11795d42a4f9e4a9e21052 SHA-256: 9d072c19242c54f28f068894b9389927bb6740fd36181c95a3769785f84b5a9e
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a link farm or redirection scheme. The embedded URLs and the document body text, though partially obfuscated, reinforce the presence of these external links. The primary goal appears to be directing users to a multitude of websites, likely for SEO manipulation or to serve as a distribution point for further malicious content.

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://gomriz.com/uploads/1/3/0/9/130969281/130969281.html#factores+de+coagulacion+y+sus+funciones PDF link annotation
    • http://tru-tek.org/uploads/1/3/0/6/130621163/7800721.pdfIn PDF document text
    • http://vwmtexas.com/uploads/1/3/0/9/130968947/cc8f46d.pdfIn PDF document text
    • http://www.movemissouri.com/uploads/1/3/0/6/130639246/nadibejezakule-tapogebenufosa-xozemizodugates-xoxanojowu.pdfIn PDF document text
    • http://cxxrtneyleigh.com/uploads/1/3/0/5/130539652/86026e17c41afe9.pdfIn PDF document text
    • http://autodiscover.euccommunity.com/uploads/1/3/0/3/130323522/talagulabonubiw-pixik.pdfIn PDF document text
    • http://reneuhair.net/uploads/1/3/0/2/130288643/2b4fcc04ab1b.pdfIn PDF document text
    • http://countrychunkiecandle.com/uploads/1/3/0/3/130323360/kusapev.pdfIn PDF document text
    • http://mail.wedosailingclubinsurance.com/uploads/1/3/0/8/130813777/vonaxizivimose-giwonagoxowefi.pdfIn PDF document text
    • http://artistfilmseries.com/uploads/1/3/0/5/130545565/bifimub.pdfIn PDF document text
    • http://beatwood.eu/uploads/1/3/0/5/130545753/5242326.pdfIn PDF document text
    • http://hiltonheadchurch.org/uploads/1/3/0/5/130540083/3250209.pdfIn PDF document text
    • http://sweetsbykay.com/uploads/1/3/0/6/130622012/bazajafugi.pdfIn PDF document text
    • http://fbclexwomensministry.com/uploads/1/3/0/7/130774979/bepuk-xawevus-mijunujex.pdfIn PDF document text
    • http://iamevrything.com/uploads/1/3/0/5/130539251/8163293.pdfIn PDF document text
    • http://empty-ideas.com/uploads/1/3/0/5/130550955/750731dd66.pdfIn PDF document text
    • http://mrworkman.ca/uploads/1/3/0/2/130289415/supaxo.pdfIn PDF document text
    • http://hotel-tentrem.net/uploads/1/3/0/8/130814774/16510.pdfIn PDF document text
    • http://hopgal.com/uploads/1/3/0/6/130639244/8e157.pdfIn PDF document text
    • http://www.harbrimedia.com/uploads/1/3/0/4/130435978/3851527.pdfIn PDF document text
    • http://www.envirocentre.eu/uploads/1/3/0/4/130476575/6cf1e73.pdfIn PDF document text
    • http://strawberryphotos.net/uploads/1/3/0/6/130621355/4842629.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008638.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8638 8708 bytes
SHA-256: d560dc1c3a29819151dd60b8907ffd1857427ed8790863dbf3ca5d527aa5f438
font_01_sfnt_off0000a600.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA600 16096 bytes
SHA-256: 65ca2fa633a49bc637c245e3469a24bec82cbb291b9200d770c42ee2df1588ac

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