Malicious PDF — malware analysis report

Static analysis result for SHA-256 2366233faa675c4c…

MALICIOUS

PDF

36.8 KB Created: 2020-06-11 21:33:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-08-25
MD5: c1a2d5d26a2b88ddd1ba8b5227b78f42 SHA-1: d0e71a45b1ff5ef4aea98a77158ca5676398cca9 SHA-256: 2366233faa675c4ced3e3b9671db84089566f612d0a6c7cf7585a891b02f98cf
96 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The embedded URLs point to various domains, suggesting a link farm or redirection mechanism. The ML classifier also strongly indicated maliciousness. The primary attack pattern involves luring the user to click these links, which likely lead to malicious websites or downloads.

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://rudd.knowlogix.com/uploads/1/3/2/3/132303370/132303370.html#guide+to+computer+forensics+and+investigations+3rd+edition+solutions PDF link annotation
    • http://atravelstory.com/uploads/1/3/0/2/130289638/wotezogeleg.pdfIn PDF document text
    • http://tigerseyementality.com/uploads/1/3/0/6/130604806/vatimepadug_fesirixotar_tanoz_lakorapuvopi.pdfIn PDF document text
    • http://grscloud.net/uploads/1/3/0/5/130547207/3778754.pdfIn PDF document text
    • http://maxgordonportfolio.com/uploads/1/3/1/4/131407110/a6c5c7a11f4b.pdfIn PDF document text
    • http://toprewardsite.com/uploads/1/3/0/7/130739699/4356067.pdfIn PDF document text
    • http://mta-sts.mx.silhouettestables.com/uploads/1/3/0/5/130551456/6607289.pdfIn PDF document text
    • http://hostmaster.onedocs.co.uk/uploads/1/3/0/5/130545480/0e13510f9d2.pdfIn PDF document text
    • http://ernieshardware.com/uploads/1/3/1/8/131871909/c44becd47c.pdfIn PDF document text
    • http://media.shopphoenixprime.com/uploads/1/3/0/8/130813448/a317c90e0b.pdfIn PDF document text
    • http://adamhuckeby.com/uploads/1/3/0/6/130621950/2585102.pdfIn PDF document text
    • http://rootsraizesbrasileiras.com/uploads/1/3/0/5/130543402/kumizafamadado_dikusorozegisiv_fimajuzeraxufon.pdfIn PDF document text
    • http://costarica-spanishschool.tagtranslations.com/uploads/1/3/0/5/130543346/fbb991.pdfIn PDF document text
    • http://mta-sts.mx.centralmaintenancesystems.com/uploads/1/3/0/2/130274263/266912.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://vebepos.files.wordpress.com/2020/06/sudukomipibekewalobidinu.pdfIn PDF document text
    • https://nubiwudowuva456071019.files.wordpress.com/2020/06/fovagolup.pdfIn PDF document text
    • https://safowus.files.wordpress.com/2020/06/fejitasoredu.pdfIn PDF document text
    • https://nobasukilox.files.wordpress.com/2020/06/delobajadara.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

Related samples 3

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_off0000638b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x638B 10384 bytes
SHA-256: 0081cc7deeb3d831276ac066cc2a292511b88c4b45f3621adc055899afee491c

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