Malicious PDF — malware analysis report

Static analysis result for SHA-256 10ee347c86cfd48c…

MALICIOUS

PDF

34.5 KB Created: 2020-05-17 20:27:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9f204dceed7e63a275239053503ba284 SHA-1: c2f9a3763d016dfc761b88d73607a20d6b1c14a1 SHA-256: 10ee347c86cfd48ca210a1c47ff64e4930bf72b57c01da18b21a96bfa7e5c535
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various PDF files hosted on different domains. This suggests a link farm or SEO spamming operation, potentially used to distribute malicious content or manipulate search engine rankings. The ML classifier also strongly indicated maliciousness.

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://rochecenter.org/uploads/1/3/0/6/130639647/130639647.html#bpt+ophera+intercom+manual
    • http://automatic-suv4wd.com/uploads/1/3/0/6/130639236/tewelixume.pdf
    • http://fcbtlaw.com/uploads/1/3/0/7/130776855/pixuwazurilawipe.pdf
    • http://biancabonomolo.com/uploads/1/3/1/4/131407165/3706537.pdf
    • http://xmascreationsbynj.com/uploads/1/3/0/2/130291784/nibasajewomononuten.pdf
    • http://nfpafireprotectiontanks.com/uploads/1/3/0/5/130543468/1c6d4d6f.pdf
    • http://estimulareaprender.com/uploads/1/3/1/0/131070098/fazoj-mijixonugoburo-xexerixow.pdf
    • http://httpswwwelegantowlboutique.com/uploads/1/3/1/3/131384229/50a00df669e.pdf
    • http://arfemex.com/uploads/1/3/0/2/130272233/sanerenewite-laruliwitotivor-muribipelomugar.pdf
    • http://mujereslunacreciente.com/uploads/1/3/1/1/131164297/vosakosuzidir_zunerala_wevasutunu.pdf
    • http://mccartneyhitslive.com/uploads/1/3/1/1/131164440/9459487.pdf
    • http://darcyk.com/uploads/1/3/0/7/130740213/jewuvemarej.pdf
    • http://act33guaranteed.com/uploads/1/3/0/5/130538997/vowasi_nutakib.pdf
    • http://dannyscleaningservices.net/uploads/1/3/0/4/130483355/damozeme.pdf
    • http://romygrbicskinlove.com/uploads/1/3/1/1/131163712/983d25ee15.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000058e3.bin
4255e7f0db342cc33f5ae13718c0f085e076fcdc4f90e3a60193d1495b072343		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58E3 11796 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.