Malicious PDF — malware analysis report

Static analysis result for SHA-256 46dd7cfffffa1b12…

MALICIOUS

PDF

42.2 KB Created: 2020-03-31 19:49:42 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: d52cc34880b569c135bbc3564595f920 SHA-1: 4c0c016b9e3b6bbd2cda818a24ebef451f360238 SHA-256: 46dd7cfffffa1b12c2b0fea765d7af855a63e5b950b20a1498225160f6596d86
94 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, characteristic of a link farm designed to direct users to potentially malicious websites. The ML classifier strongly flagged this PDF as malicious. The primary attack pattern involves luring users through these deceptive links, with the specific content of the document appearing to be obfuscated or irrelevant to the malicious intent.

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://chattahoocheevalleysenior.net/uploads/1/3/1/0/131070888/131070888.html#chef%27s+choice+15+trizor+xv+edgeselect+electric+knife+sharpener+australia
    • http://journeymappers.rocks/uploads/1/3/0/5/130588565/e5fb7770c8f9.pdf
    • http://222-big-bon.site/uploads/1/3/0/8/130813764/341116.pdf
    • http://cakesclozet.com/uploads/1/3/0/3/130313603/jeligep-fevafifagupin-jovatekugafuz-gagez.pdf
    • http://austin-arena.com/uploads/1/3/0/5/130540725/konutepebekebesid.pdf
    • http://dtc-net.com/uploads/1/3/0/5/130539660/muwurefawor.pdf
    • http://laurenshaw.org/uploads/1/3/0/6/130621844/jolujuwazanab.pdf
    • http://cre8te.org/uploads/1/3/0/4/130488220/88dc0.pdf
    • http://scstrainingofohio.com/uploads/1/3/1/4/131410234/fijatavimibipajego.pdf
    • http://surfschoolcancun.com/uploads/1/3/1/1/131164320/1698924.pdf
    • http://socalasta.voyagerwebsites.com/uploads/1/3/0/4/130476700/rarupatoguj_fusujuvukerege.pdf
    • http://myfloresflowers.com/uploads/1/3/0/7/130775489/widoka.pdf
    • http://courtneywestern.com/uploads/1/3/0/6/130604725/mikexewinarotux-jetufivox-dazibivik.pdf
    • http://playlearnwin.com/uploads/1/3/0/6/130621576/5621403.pdf
    • http://hawkemusic.net/uploads/1/3/0/5/130590308/baccc48b8a.pdf
    • http://michelleberceau.com/uploads/1/3/0/6/130604081/kilimuxugawotegupa.pdf
    • http://sugarbayshrimp.com/uploads/1/3/0/7/130739904/c4a6d487a5.pdf
    • http://bodybybuoybelly.com/uploads/1/3/0/6/130604283/basatu.pdf
    • http://operationpurplepaws.org/uploads/1/3/0/3/130323471/pabowerax.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_off0000798c.bin
544380cc9f33f7daaafe25aaaaee7cd5997ac787c4e8f862f1601917300ecb36
pdf-font-stream PDF embedded font (sfnt) at offset 0x798C 8056 bytes