Malicious PDF — malware analysis report

Static analysis result for SHA-256 de478127dc2f1aaf…

MALICIOUS

PDF

37.2 KB Created: 2020-03-27 03:48:56 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2026-05-09
MD5: b4fcf74968283dbf6992f891b5e1ff7c SHA-1: 43a1676ab487ee475d9b06bfba72a151b03b2f90 SHA-256: de478127dc2f1aaf985613ab5ced51821a0eeb11016267c168c82fca8d3a3cb7
96 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to other PDF files hosted on similar domains. The document body text, though partially corrupted, includes a reference to "clockwork princess audiobook download" and a URL that further supports this lure. The PDF_SEO_LINK_FARM heuristic indicates a deliberate attempt to create a link farm, likely for SEO manipulation or to distribute malicious content. The ML_NYX_PDF_MALICIOUS score of 0.999991 strongly suggests malicious intent.

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://jackiefrankeditor.com/uploads/1/3/0/5/130588943/130588943.html#clockwork+princess+audiobook+download PDF link annotation
    • http://slpresource.com/uploads/1/3/0/2/130271224/fugunezu.pdfIn PDF document text
    • http://alohahairnmakeupbygg.com/uploads/1/3/0/2/130287997/mabate.pdfIn PDF document text
    • http://mrspanglish.com/uploads/1/3/0/6/130603842/5905075.pdfIn PDF document text
    • http://o2smallhouse.com/uploads/1/3/0/3/130313564/8175684.pdfIn PDF document text
    • http://msjacques-purdysclassroom.com/uploads/1/3/0/3/130313156/6549692.pdfIn PDF document text
    • http://lunarlogs.com/uploads/1/3/0/4/130489696/rajipi.pdfIn PDF document text
    • http://markphe.com/uploads/1/3/0/6/130605280/filivab-pugofazejogow-wisuvujawod.pdfIn PDF document text
    • http://mta-sts.mx.whitehorseranchvenue.com/uploads/1/3/0/2/130289458/puvib-ratopav.pdfIn PDF document text
    • http://www.pearsongraphics.co.uk/uploads/1/3/0/4/130477090/moxuwikoxis-rakimatetonoji.pdfIn PDF document text
    • http://calresrealty.com/uploads/1/3/0/5/130590219/7961810.pdfIn PDF document text
    • http://mail.4frendzmeatmarket.com/uploads/1/3/0/6/130605493/rilarawusun.pdfIn PDF document text
    • http://thompson.okanagan.com/uploads/1/3/0/4/130490399/zudetunu.pdfIn PDF document text
    • http://stmargaretbiglake.com/uploads/1/3/0/4/130476359/suvonaka.pdfIn PDF document text
    • http://graceischange.com/uploads/1/3/0/4/130477882/5372112.pdfIn PDF document text
    • http://jmdetailingenterprise.com/uploads/1/3/0/6/130639885/mibowoge.pdfIn PDF document text
    • http://downlinecheatsheet.com/uploads/1/3/0/3/130323374/vusipudo.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
🗂 Part of campaign: cairobritishcollege.com 18 samples

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_off00006a18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A18 7492 bytes
SHA-256: 6364e15758aebc9538e11adfd4d09bd9de86d4f2de9d3795046c377fb36d9c2e

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