Malicious PDF — malware analysis report

Static analysis result for SHA-256 85f5228c7842feb8…

MALICIOUS

PDF

57.5 KB Created: 2020-03-08 02:35:55 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2026-05-07
MD5: 07c016abbaae413ab054df7037303258 SHA-1: 134a7b7f239ac4936cce1a8e77a55e757e5960b2 SHA-256: 85f5228c7842feb8be07ca9790119f9df4d050e3d9a16154a4fb4e106526d021
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various PDF files hosted on different domains, suggesting a link farm or SEO manipulation tactic. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the sheer volume of external links is suspicious and likely intended to direct users to potentially harmful content or for search engine ranking manipulation.

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://host2.creativedatainc.com/uploads/1/3/0/7/130776074/130776074.html#jk+agrarian+reforms+act+1976+pdf PDF link annotation
    • http://canbabaoglu.com/uploads/1/3/0/5/130545087/bulafiwajib.pdfIn PDF document text
    • http://newportheightsmc.com/uploads/1/3/0/5/130550732/tugim-puzow-roxetu.pdfIn PDF document text
    • http://stlouistriathlon.com/uploads/1/3/0/7/130738701/4341409.pdfIn PDF document text
    • http://southafricanwineandfood.com/uploads/1/3/0/3/130323222/lalevajeda.pdfIn PDF document text
    • http://keystoneconcealment.com/uploads/1/3/0/3/130313403/fetepojiralos_kavikura_varujovovazig_budemadara.pdfIn PDF document text
    • http://led-ombouwset.nl/uploads/1/3/0/6/130640047/5133951.pdfIn PDF document text
    • http://timtucker.tv/uploads/1/3/0/5/130539979/sirexufiz.pdfIn PDF document text
    • http://brucepeninsulaadventure.com/uploads/1/3/0/3/130379479/4f7a8c0b.pdfIn PDF document text
    • http://lachlanvalleyroofing.com/uploads/1/3/0/4/130476628/vuzevuranufixes.pdfIn PDF document text
    • http://www.shopalittltesomethingph.com/uploads/1/3/0/7/130739053/rofarujuj.pdfIn PDF document text
    • http://2020videoreviews.com/uploads/1/3/0/2/130289354/fopigojiki_pekarefizimuba_feranoluxodidi_neputal.pdfIn PDF document text
    • http://www.legitlease.com/uploads/1/3/0/7/130739664/317991232c.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009b76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B76 1544 bytes
SHA-256: b095009e1aa7b679086a2dd093949a1e2bfdfa179c83d9e64a20210f199a406d
font_01_sfnt_off0000a2e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA2E6 8524 bytes
SHA-256: 74f76e304d78deefe3c1430a34dccfc6d7c5df340c1081fd84dd991883eb0de4
font_02_sfnt_off0000c3a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3A1 16036 bytes
SHA-256: 779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63

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