Malicious PDF — malware analysis report

Static analysis result for SHA-256 75fec6036574120b…

MALICIOUS

PDF

118.5 KB Created: 2020-04-08 06:58:17 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 66793b160598eb3cbb6a227396577d18 SHA-1: 30510e240add79aa2608b55488ff98cbb33d2cab SHA-256: 75fec6036574120bf41cc689c9701c24f934f87c48292ad5cdccaf5350ef8074
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. It contains a large number of external links, suggesting a link farm or SEO manipulation tactic. The document body contains metadata related to its creation, but no explicit instructions or lures. No scripts were extracted, but the presence of numerous external URLs indicates a potential for redirecting users to malicious sites or hosting 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://designproinnovation.com/uploads/1/3/0/5/130589302/130589302.html#manual+de+redaccion+de+documentos+juridicos+pdf
    • http://apropertyresolution.com/uploads/1/3/0/3/130323538/dubibekufisalab.pdf
    • http://alejandramur.com/uploads/1/3/0/5/130540010/c8e6cc040.pdf
    • http://aphotobydre.com/uploads/1/3/0/2/130292014/63517e9a959813f.pdf
    • http://ocfertilitycare.com/uploads/1/3/0/5/130550930/telepogiv_nejuj.pdf
    • http://ukuhuisabc.com/uploads/1/3/0/6/130604720/28ca7a2.pdf
    • http://pacificcoasthellway.com/uploads/1/3/0/2/130288514/degufisegiroxiji.pdf
    • http://ggcarehome.net/uploads/1/3/0/8/130814126/bodakosi_zinaxun_zazak.pdf
    • http://scybl.ca/uploads/1/3/1/4/131453408/zafabolevusef_zoselalo_vagoduguwufipo_pulixozedat.pdf
    • http://pinoleplumbing.com/uploads/1/3/1/3/131383825/0015fb82d4.pdf
    • http://cupofjoenyc.com/uploads/1/3/0/2/130271255/muxujogup.pdf
    • http://arnould-achats-consulting.com/uploads/1/3/0/5/130541131/jatefo-nividadax-zobulirapanaz-jadeke.pdf
    • http://rinconazucarero.com/uploads/1/3/0/2/130289741/vajisar-refosimivagaju-dokabora-jepunabesevul.pdf
    • http://growinvestmentgroup.com/uploads/1/3/0/7/130776684/829679.pdf
    • http://tallitonttu.com/uploads/1/3/0/5/130540352/jepipoful-rizigiwos-tusoxitidagimap.pdf
    • http://dwellingdesignco.com/uploads/1/3/0/7/130738789/litaruvijowefideg.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/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001909f.bin
f9bfd2f8ad8b7e7e1152e6578267faa2b090373136d62183372a732ed69d4ebc
pdf-font-stream PDF embedded font (sfnt) at offset 0x1909F 10324 bytes
font_01_sfnt_off0001b501.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63
pdf-font-stream PDF embedded font (sfnt) at offset 0x1B501 16036 bytes