Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce491494bf587a4a…

MALICIOUS

PDF

52.2 KB Created: 2020-06-05 20:43:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fe8b0fc651e8b1fb85b8bff534d23352 SHA-1: b9ddf87375df2ad80ce75c1d9c92221c58ccc881 SHA-256: ce491494bf587a4abdb28e4557b9b44a242da7dea2bf6bb13ae1e56a77cfdba1
62 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a PDF SEO link farm, indicating a large number of external links generated to manipulate search engine results. The document body and extracted URLs confirm this, pointing to numerous domains hosting PDF files with numeric or generic slugs. This suggests a campaign focused on driving traffic to these sites, potentially for advertising, phishing, or distributing further malware.

Heuristics 3

  • 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
  • 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://jerseydrivedrivingschool.net/uploads/1/3/1/6/131606469/131606469.html#apostila+gest%25C3%25A3o+de+qualidade+pdf
    • http://mountainzonewaterpolo.com/uploads/1/3/0/7/130739237/tiwuro_malufozuji_falapazudakifir.pdf
    • http://negotiationprofessionals.org/uploads/1/3/0/5/130588185/jekumalexi_zerugeliter_zosesenisaxup_juwolipigob.pdf
    • http://griffycreekstudio.com/uploads/1/3/1/4/131408100/wopekikefeme-liwoxizunuwi.pdf
    • http://plumbingconsultants.net/uploads/1/3/0/5/130546036/8855750.pdf
    • http://mail.westkellowyurts.com/uploads/1/3/0/7/130740200/wofukokomiderus.pdf
    • http://bedesisters.com/uploads/1/3/0/6/130639231/da9acb408e.pdf
    • http://sharptopzfieldservices.com/uploads/1/3/2/3/132302857/rugurofiw_xunufizexogegax_wukokexarijiv.pdf
    • http://jerseydrivedrivingschool.net/uploads/1/3/1/6/131606469/terms.html
    • http://jerseydrivedrivingschool.net/uploads/1/3/1/6/131606469/dmca.html
    • http://jerseydrivedrivingschool.net/uploads/1/3/1/6/131606469/policy.html
    • https://mulezuv.files.wordpress.com/2020/06/58124502400.pdf
    • https://sonapize.files.wordpress.com/2020/06/bosisabuxa.pdf
    • https://lukipidize.files.wordpress.com/2020/06/7716600094.pdf
    • https://garuwade.files.wordpress.com/2020/06/87900725566.pdf
    • https://podasavi.files.wordpress.com/2020/06/68764129083.pdf
    • https://xapoteronov.files.wordpress.com/2020/06/kotejuzanokem.pdf
    • https://fogadozela.files.wordpress.com/2020/06/rerela.pdf
    • https://resuxinobol.files.wordpress.com/2020/06/90619239604.pdf
    • https://vipodujenij.files.wordpress.com/2020/06/11215481065.pdf
    • https://gamumibas.files.wordpress.com/2020/06/dewefofekavilar.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_off00009cca.bin
abb06187c96b0b479386803eb23f5e64b8cca79e1531fcd95a536a25aa12b221		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9CCA 12268 bytes

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