Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d586d75c1df08a3…

MALICIOUS

PDF

45.2 KB Created: 2020-06-06 16:32:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-24
MD5: bc5a2627501d978c0f8c12270373917a SHA-1: b1dfb7fb4f7676bcf29f61314747ccd54337ab15 SHA-256: 2d586d75c1df08a3a05f45e6cb9cce4e5847200b132d85cac6485b7a1333f8a4
96 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, identified by the PDF_SEO_LINK_FARM heuristic. The ML classifier also strongly indicated maliciousness. The primary purpose appears to be directing users to a network of suspicious domains, likely for hosting further malicious content or engaging in SEO spam. No scripts were extracted, limiting the analysis of direct execution capabilities.

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://gypsylibations.com/uploads/1/3/0/7/130739856/130739856.html#hpx+crypto+%25C3%25A9+piramide PDF link annotation
    • http://crazyquickceus.com/uploads/1/3/1/6/131607054/d70d236ababe.pdfIn PDF document text
    • http://tanhut.net/uploads/1/3/0/7/130738970/5942511.pdfIn PDF document text
    • http://cpanel.vernbalicontractors.com/uploads/1/3/0/5/130588428/27526.pdfIn PDF document text
    • http://yesjfwc.org/uploads/1/3/1/3/131398487/kofinobob.pdfIn PDF document text
    • http://drosouns.com/uploads/1/3/0/5/130589374/gurokubusagesafitiz.pdfIn PDF document text
    • http://35n.undesirable.us/uploads/1/3/0/6/130621143/3c093530d2da543.pdfIn PDF document text
    • http://autoconciergeservice.com/uploads/1/3/0/7/130776423/8708201.pdfIn PDF document text
    • http://gypsylibations.com/uploads/1/3/0/7/130739856/terms.htmlIn PDF document text
    • http://gypsylibations.com/uploads/1/3/0/7/130739856/dmca.htmlIn PDF document text
    • http://gypsylibations.com/uploads/1/3/0/7/130739856/policy.htmlIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://pinuraliwa9571753.files.wordpress.com/2020/06/ribabipabam.pdfIn PDF document text
    • https://boxagoboloj.files.wordpress.com/2020/06/musazutenivimasapifimi.pdfIn PDF document text
    • https://nabelugameka.files.wordpress.com/2020/06/fozasomagefumutenap.pdfIn PDF document text
    • https://sowapije.files.wordpress.com/2020/06/39091661943.pdfIn PDF document text
    • https://tenejokago.files.wordpress.com/2020/06/36105441260.pdfIn PDF document text
    • https://ratubinij.files.wordpress.com/2020/06/zudikejivuwer.pdfIn PDF document text
    • https://wurumopo.files.wordpress.com/2020/06/xirubesajalikowapa.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 1

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_off00007e6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E6A 13356 bytes
SHA-256: 0392274e2830329f39459f88c4fe9f5b4be8db71d1fad8a946ae250730f46476

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