Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8ab8ebdf126205c…

MALICIOUS

PDF

68.5 KB Created: 2020-06-03 20:17:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-24
MD5: 0adb81b5038aa408af842f5aea9ba6e6 SHA-1: a8085524b002088aa775df2080ea7b4eee934ffb SHA-256: c8ab8ebdf126205c8a29fd854aed542d250820d41fb603ac5b6e889af206d13d
96 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, a common technique for SEO poisoning or distributing malicious content. The presence of the URL 'http://host230.carmichaelnl.com/uploads/1/3/0/7/130776104/130776104.html#shy+glizzy+young+jefe+download' directly in the document body suggests it is intended to be a direct lure for users to click and download a payload. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://host230.carmichaelnl.com/uploads/1/3/0/7/130776104/130776104.html#shy+glizzy+young+jefe+download PDF link annotation
    • http://letallcreationtestify.com/uploads/1/3/1/4/131407008/xijiwofudi-voxipisunavad.pdfIn PDF document text
    • http://franceshodge.com/uploads/1/3/0/7/130739938/xijawixotafimokole.pdfIn PDF document text
    • http://microgreensdirect.com/uploads/1/3/0/6/130604309/gigoporixoxid.pdfIn PDF document text
    • http://homeandhouserefinishes.net/uploads/1/3/0/5/130538902/220906.pdfIn PDF document text
    • http://ransomfoundation.org/uploads/1/3/0/8/130814729/fagamisuraxadavuras.pdfIn PDF document text
    • http://hostmaster.crossfithh.de/uploads/1/3/0/7/130776698/4a92583.pdfIn PDF document text
    • http://codeofconductpledge.org/uploads/1/3/0/4/130483125/a90d2d1cd8.pdfIn PDF document text
    • http://aramintaschild.com/uploads/1/3/0/9/130969492/279e14c63.pdfIn PDF document text
    • http://host230.carmichaelnl.com/uploads/1/3/0/7/130776104/terms.htmlIn PDF document text
    • http://host230.carmichaelnl.com/uploads/1/3/0/7/130776104/dmca.htmlIn PDF document text
    • http://host230.carmichaelnl.com/uploads/1/3/0/7/130776104/policy.htmlIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://damupezaz.files.wordpress.com/2020/06/mefomilijabilumezid.pdfIn PDF document text
    • https://kupanireweru.files.wordpress.com/2020/06/momaxivunuxabikavazerid.pdfIn PDF document text
    • https://porugisi.files.wordpress.com/2020/05/dapisenuvajofagobelufesas.pdfIn PDF document text
    • https://zabofox.files.wordpress.com/2020/06/7482480137.pdfIn PDF document text
    • https://ramisiwew.files.wordpress.com/2020/06/zutesona.pdfIn PDF document text
    • https://botemep98974298.files.wordpress.com/2020/06/dudof.pdfIn PDF document text
    • https://kekerawigufa.files.wordpress.com/2020/06/kupupofaxilurananopaxaf.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://scripts.sil.org/OFLIn PDF document text
🗂 Part of campaign: emilybrobeck.com 3 samples

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_off0000debe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEBE 11532 bytes
SHA-256: 12606f29460539b411bc57fc8fe8e27c868136bd73de0d3588b3957b9daabbec

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