Malicious PDF — malware analysis report

Static analysis result for SHA-256 9375469df4605f09…

MALICIOUS

PDF

41.3 KB Created: 2020-03-29 11:24:25 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2026-05-09
MD5: e716e3bc0469a407aaf62f21f6936e8b SHA-1: 5ae1a55a5e631f273d5843fe1fdc8ff3dccdd710 SHA-256: 9375469df4605f09b454fbddf4e06c764504c32f15d95d3f3427f5b46bcf23cf
96 Risk Score

Malware Insights

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

The PDF contains a large number of external links, detected by the PDF_SEO_LINK_FARM heuristic, pointing to various PDF files on different domains. The ML classifier also strongly indicated maliciousness. The primary attack pattern appears to be SEO poisoning or a link farm designed to direct users to potentially malicious content hosted on numerous unrelated domains.

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://host.creativedatainc.com/uploads/1/3/0/4/130489025/130489025.html#mercruiser+trim+pump+bracket PDF link annotation
    • http://rockwellhousing.com/uploads/1/3/1/0/131070925/8f12359f570.pdfIn PDF document text
    • http://heidysbox.com/uploads/1/3/0/8/130874157/ab141.pdfIn PDF document text
    • http://oandpideas.com/uploads/1/3/0/3/130313156/vozavak_josomud_fodewaxiwu_wuzoj.pdfIn PDF document text
    • http://verticalsandboxproductions.com/uploads/1/3/0/5/130589205/suluwa_vasigivutejav.pdfIn PDF document text
    • http://kittenkarnage.com/uploads/1/3/0/6/130604177/2010973.pdfIn PDF document text
    • http://albiruniinc.com/uploads/1/3/0/9/130969322/kekokutaneximi.pdfIn PDF document text
    • http://williamevertson.net/uploads/1/3/0/6/130620645/kefasuxuvabog_jewaputavoxom_situtotoj_duperutetodaf.pdfIn PDF document text
    • http://catwearflair.com/uploads/1/3/0/8/130874565/defijukinuguf.pdfIn PDF document text
    • http://rustoddicy.com/uploads/1/3/0/6/130640061/fimofipujaju.pdfIn PDF document text
    • http://www.djwesleykuyper.nl/uploads/1/3/0/9/130969973/jaluxowibekure_joxopulava_kakuniduz.pdfIn PDF document text
    • http://houtworm-bestrijding.net/uploads/1/3/0/6/130604181/c6605f24a42fc8.pdfIn PDF document text
    • http://chrisschorpp.de/uploads/1/3/1/3/131398424/luzetejozujawi_wenuzopatase_tadexipuz_zepakenokivuro.pdfIn PDF document text
    • http://alexkd.com/uploads/1/3/0/7/130775465/c0b10.pdfIn PDF document text
    • http://yarnandsass.com/uploads/1/3/0/7/130739945/507f00807.pdfIn PDF document text
    • http://www.living-media.org/uploads/1/3/0/6/130639509/045855601f0216.pdfIn PDF document text
    • http://quadamity.com/uploads/1/3/0/6/130640150/4642240.pdfIn PDF document text
    • http://tovalane.com/uploads/1/3/0/7/130776533/wukipujolof_povenixiz.pdfIn PDF document text
    • http://mikericci.info/uploads/1/3/0/6/130605435/nuwiki_pidabavinive.pdfIn PDF document text
    • http://maureenburkeceremonies.com/uploads/1/3/1/0/131071129/pivokam-javaf-rinotexegomosor.pdfIn PDF document text
    • http://annotalegal.com/uploads/1/3/0/6/130621995/47b5cc5eaa8cbd4.pdfIn PDF document text
    • http://lacinta.ru/uploads/1/3/0/7/130739312/c96d3ea1258dd.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

Related samples 8

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_off000075bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75BC 9092 bytes
SHA-256: 959dcebcc823fa8ff043422f6c8425f183a00d17d01dfaff6c9e4630a0434bbf

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