Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2ff99b13790a0ae…

MALICIOUS

PDF

46.0 KB Created: 2020-04-11 10:33:03 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2026-05-08
MD5: 5f768b24ad9c632b1fc97823f1b536ff SHA-1: 7609f2b761e2bf80c8a69ccea29fe826e5efe6e5 SHA-256: a2ff99b13790a0ae1d8f89d4aa2a4758a521a904316e4b109344e98b6166db59
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. One of these links, http://socalasta.voyagerwebsites.com/uploads/1/3/1/4/131437025/131437025.html#the+magic+school+bus+lost+in+space, is embedded directly in the document body. The primary purpose appears to be directing users to a network of linked pages, likely for SEO manipulation or to host further malicious content. No scripts were extracted from this sample.

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://socalasta.voyagerwebsites.com/uploads/1/3/1/4/131437025/131437025.html#the+magic+school+bus+lost+in+space PDF link annotation
    • http://integral2030.org/uploads/1/3/0/7/130740571/xujod.pdfIn PDF document text
    • http://coldicezero.com/uploads/1/3/0/6/130622058/gekovab.pdfIn PDF document text
    • http://newvistaequity.com/uploads/1/3/1/6/131606509/4314228.pdfIn PDF document text
    • http://nasseralkhalifa.com/uploads/1/3/1/4/131483337/xeburaxejupew.pdfIn PDF document text
    • http://idahoranchauction.com/uploads/1/3/1/3/131379014/2422977.pdfIn PDF document text
    • http://qualitynextconsulting.nl/uploads/1/3/1/4/131437531/gitodogorevulofovujo.pdfIn PDF document text
    • http://thesangsthething.com/uploads/1/3/1/4/131409677/xejip.pdfIn PDF document text
    • http://lekare.net/uploads/1/3/0/5/130588433/pepekexad.pdfIn PDF document text
    • http://pappygrannysbargins.com/uploads/1/3/0/8/130814341/db204e887939.pdfIn PDF document text
    • http://rhonddaladieshockey.co.uk/uploads/1/3/0/6/130639648/7129755.pdfIn PDF document text
    • http://mytvking.com/uploads/1/3/0/5/130588545/6e9f51ab6ff.pdfIn PDF document text
    • http://godsenclosedearth.com/uploads/1/3/0/6/130604393/cdef150ae.pdfIn PDF document text
    • http://nickiyoungconsulting.com/uploads/1/3/0/6/130603728/novekolexan-dekaxodotu-vizuzu-vidabaxevud.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000080da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80DA 8060 bytes
SHA-256: f4f3a7dcda63d92fc3aa269cd71354a7d2f9a6cc4d2183f99eda74d66b2cf236
font_01_sfnt_off0000a049.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA049 2732 bytes
SHA-256: 7863b829de04ea8b7f5be4d5dae43fa62182e7611f0c3a300d10b316d27db496

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