Malicious PDF — malware analysis report

Static analysis result for SHA-256 eafa4f7578fe67b6…

MALICIOUS

PDF

100.3 KB Created: 2020-06-03 05:27:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ceaaf221bc1a05e18d1332c8b1a22022 SHA-1: 8e11be01468fa24ae22167a70aa8ffcac41d62c1 SHA-256: eafa4f7578fe67b6bd6728eb602db1564b56c791d455f6b83088132c121d9e8f
96 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links to external websites, many of which are structured as PDF files. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external links, suggesting a link farm or redirection scheme. The ML classifier also flagged this PDF as malicious with high confidence. While no scripts were explicitly extracted, the structure and numerous external links point towards a phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://adsl-63-204-18-34.benefitplans.org/uploads/1/3/2/3/132302830/132302830.html#marriages+and+families+intimacy+dive PDF link annotation
    • http://blackhollywoodatlanta.com/uploads/1/3/1/8/131871919/jawokoxanigopida.pdfIn PDF document text
    • http://jbauertruckinginc.com/uploads/1/3/1/4/131438766/49aa3f48f.pdfIn PDF document text
    • http://paradisecoastreview.com/uploads/1/3/0/5/130590139/balikufapoguka-sotugixukolidel.pdfIn PDF document text
    • http://48c.undesirable.us/uploads/1/3/1/6/131636969/5eeb454871.pdfIn PDF document text
    • http://kpaircraftparts.com/uploads/1/3/0/9/130969415/396fce98d2f320.pdfIn PDF document text
    • http://adsl-63-204-18-34.benefitplans.org/uploads/1/3/2/3/132302830/terms.htmlIn PDF document text
    • http://adsl-63-204-18-34.benefitplans.org/uploads/1/3/2/3/132302830/dmca.htmlIn PDF document text
    • http://adsl-63-204-18-34.benefitplans.org/uploads/1/3/2/3/132302830/policy.htmlIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://lakuvipejuz106751964.files.wordpress.com/2020/05/75449969754.pdfIn PDF document text
    • https://jumitedav.files.wordpress.com/2020/05/zumuwobunitutezosuw.pdfIn PDF document text
    • https://bikixaxapu55491205.files.wordpress.com/2020/05/xizagebev.pdfIn PDF document text
    • https://tulasamogese.files.wordpress.com/2020/06/64127894040.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
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000161b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x161B6 10520 bytes
SHA-256: e443384bbf81151ec87570024b1a99e77f1f8a7c399fa1b4ffde5223d3527e0c