Malicious PDF — malware analysis report

Static analysis result for SHA-256 cac7ede21c8e192d…

MALICIOUS

PDF

33.5 KB Created: 2020-05-24 02:14:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-04
MD5: 442aaa57cfbd3f8e42cf30b4cde17e21 SHA-1: 381f5e389ca2d9589f8da158e31f2f972dcab776 SHA-256: cac7ede21c8e192d56885aabcc40106d68ce5e2c91897d3865ad2bcecd0bb776
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

This PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The document body is heavily obfuscated, but the presence of numerous URLs suggests a link farm or redirection scheme. The primary intent appears to be directing users to a variety of external websites, potentially for SEO manipulation or to host further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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://webmail.freshvegprep.com/uploads/1/3/0/5/130542728/130542728.html#vault+88+build+guide PDF link annotation
    • http://jacksonvilleportparking.com/uploads/1/3/0/5/130590458/4581582.pdfIn PDF document text
    • http://jaradbellphotography.com/uploads/1/3/0/2/130289722/bafut.pdfIn PDF document text
    • http://goldstoneestate.com/uploads/1/3/0/2/130273753/9921917.pdfIn PDF document text
    • http://bertlyman.com/uploads/1/3/1/3/131380623/duvawixe-pesisipafelim-xupifebuvixeda-gopubaroka.pdfIn PDF document text
    • http://hoipolloibrewingshop.com/uploads/1/3/1/4/131406077/xedepukawebita-fitemotubil-jiwoden.pdfIn PDF document text
    • http://powerbicollege.com/uploads/1/3/0/4/130490876/107f98584.pdfIn PDF document text
    • http://proctorstransport.com/uploads/1/3/0/6/130639678/belimizoxoti.pdfIn PDF document text
    • http://cva.westsidechurch.ca/uploads/1/3/0/6/130621786/b4d3dece8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn PDF document text

Related samples 1

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

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005923.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5923 10048 bytes
SHA-256: 7ffc311d2612f788c65c6d8f67044870f540cdce7e4aaaf85deec7a1c39cde6e

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