Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9d702332102945b…

MALICIOUS

PDF

38.9 KB Created: 2020-03-29 05:25:08 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2026-05-08
MD5: 437c5f449ecb4bfc23e92e7e93f6841a SHA-1: 768d506e1ddc6298b5d1d635e84a8683456cafe0 SHA-256: b9d702332102945bd4ce4bff71cb0310ffa46bc1e2a7cbc7c8d0d4f36a926884
96 Risk Score

Malware Insights

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

The PDF document contains a significant number of external links, a technique often used for SEO manipulation or to redirect users to malicious sites. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external PDF links, with the primary observed URL being http://djspizza1.com/uploads/1/3/0/5/130538996/130538996.html#caracteristicas+de+las+normas+tecnicas. No scripts were extracted, and the document body is heavily obfuscated, limiting further analysis of the immediate intent beyond link distribution.

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://djspizza1.com/uploads/1/3/0/5/130538996/130538996.html#caracteristicas+de+las+normas+tecnicas PDF link annotation
    • http://supertekamerica.com/uploads/1/3/0/6/130639845/fisawepikafakogana.pdfIn PDF document text
    • http://jinhui-mechanics.com/uploads/1/3/1/1/131164173/tosujenifabopude.pdfIn PDF document text
    • http://www.mercyhsarchive.cubicstone.com/uploads/1/3/0/3/130323178/9102946.pdfIn PDF document text
    • http://ades-lab.com/uploads/1/3/0/2/130288334/satelepeta_biwalunazit_lozabiw.pdfIn PDF document text
    • http://donkahmedie.store/uploads/1/3/0/2/130270942/gilomanidobavuzuw.pdfIn PDF document text
    • http://biztriage.com/uploads/1/3/0/2/130272325/129215.pdfIn PDF document text
    • http://posters-rock.com/uploads/1/3/0/3/130323403/5108836.pdfIn PDF document text
    • http://hostmaster.barcelona-museum.de/uploads/1/3/1/0/131069934/fabuwukukokitev_tavexix_podorik_ginixu.pdfIn PDF document text
    • http://www.foodishealth.com.au/uploads/1/3/0/2/130289282/5395905.pdfIn PDF document text
    • http://wellosophy.com/uploads/1/3/0/7/130775719/fopuralevujo.pdfIn PDF document text
    • http://www.waldwickdems.com/uploads/1/3/0/2/130271031/5108183.pdfIn PDF document text
    • http://hostmaster.swiftracingcars.com/uploads/1/3/0/6/130621643/karubivofop.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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E14 8568 bytes
SHA-256: 7a36968b01466017d2d7a8bb850d502af26ae13c381a907db0531100cf64e5a4