Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8cc8e54cded2031…

MALICIOUS

PDF

40.7 KB Created: 2020-05-15 01:18:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 200a99207df591d56c968c84c02f5616 SHA-1: 8d7ebae6aa77dd991cd8af3fed37c96687cdd1d5 SHA-256: e8cc8e54cded2031e787fd4b998714c610194c6b53fd240edb6de0e2fbe7f7b4
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The document body, though heavily obfuscated, contains references to URLs that are consistent with the link farm. This suggests the primary purpose is to direct users to a network of external sites, likely for SEO manipulation or to serve as a landing page for further malicious activity.

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://collectibledelights.com/uploads/1/3/0/6/130604366/130604366.html#kit+argentina+dream+league+soccer+2018
    • http://head2toesalon.net/uploads/1/3/0/4/130477192/tufuwetozirugabemipi.pdf
    • http://eltacoranchero.com/uploads/1/3/0/6/130639407/4947430.pdf
    • http://shenandoahdevelopment.com/uploads/1/3/0/8/130813428/jetudo.pdf
    • http://clarinetrepairs.net/uploads/1/3/1/4/131483267/fipizedozixeli.pdf
    • http://thezinniahouse.com/uploads/1/3/0/9/130968949/zetezo.pdf
    • http://lizzyridge.com/uploads/1/3/0/3/130323930/b892a092e31f.pdf
    • http://caseymillercocktails.com/uploads/1/3/0/5/130550895/6ccbaa60c.pdf
    • http://indefinitequantity.com/uploads/1/3/0/6/130604812/xowad_zixajesezudo_logesaj.pdf
    • http://550kirklandway.com/uploads/1/3/0/2/130272483/vobim-nivizej-junifeg.pdf
    • http://thanksgivingdaysong.com/uploads/1/3/1/4/131408328/kirorizikorusinufo.pdf
    • http://empleos.fun/uploads/1/3/1/4/131437833/0599ba.pdf
    • http://theshopon180.com/uploads/1/3/0/9/130968933/kinet_bigutasazod_fixapezafik.pdf
    • http://caindianstudies.org/uploads/1/3/0/2/130289542/2667515.pdf
    • http://garagedoorrepairhermosabeach-ca.com/uploads/1/3/1/4/131407892/4454500.pdf
    • http://crystalclearbestvacations.com/uploads/1/3/0/5/130547405/dab3b277e841.pdf
    • http://alicialeducnyc.com/uploads/1/3/0/6/130622104/buxasinuti.pdf
    • http://arzum01adanali.com/uploads/1/3/1/0/131069898/4520890.pdf
    • http://pressurewasherlasvegas.com/uploads/1/3/0/7/130775817/nuruzagejikujo-puwawemufiv-wudiditikaza-rukemesaborimu.pdf
    • http://gooseberryshuttle.com/uploads/1/3/0/7/130739791/netudilamem_vokesozen_ladesi.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_off00007099.bin
3fe24ebe113f4eb42e25eb448d585df24899a8169465d087fe9431af679a38cb
pdf-font-stream PDF embedded font (sfnt) at offset 0x7099 10744 bytes