Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba8ea1ecfaab3b06…

MALICIOUS

PDF

42.7 KB Created: 2020-04-02 09:23:36 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2026-05-09
MD5: b3bbd742d732f4170f2cdaa7e58636b2 SHA-1: cb30b15ca90c9e6e27ac79bfea3f9d0cb552a5e4 SHA-256: ba8ea1ecfaab3b068e950d545211597d92779944454eb937f11515e95135262d
136 Risk Score

Malware Insights

MITRE ATT&CK
T1598 Gather Victim Identity Information T1204 Malicious Link

The PDF document contains a large number of external links to other PDF files hosted on various domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content. The ML classifier strongly flagged this PDF as malicious, supporting the observed link farm pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://blackhawbuilders.com/uploads/1/3/0/5/130539097/130539097.html#el+amor+verdadero+si+existe+frases PDF link annotation
    • http://bootlegrp.com/uploads/1/3/0/5/130540401/cba32.pdfIn PDF document text
    • http://metzkerconsulting.com/uploads/1/3/1/3/131398252/bc8d53d.pdfIn PDF document text
    • http://amyonearth.com/uploads/1/3/0/4/130435772/wakisikujorexun-muwutakos.pdfIn PDF document text
    • http://funkandswagger.com/uploads/1/3/0/5/130551351/6f48608c4.pdfIn PDF document text
    • http://sheqplanet.com/uploads/1/3/0/7/130775171/vusegodedolelibije.pdfIn PDF document text
    • http://rentinamericanfork.com/uploads/1/3/1/4/131437655/lomeguzoxijametuful.pdfIn PDF document text
    • http://fertilmed.com/uploads/1/3/0/4/130489564/saxorupaxopanaru.pdfIn PDF document text
    • http://cotherstonecoal.com/uploads/1/3/0/6/130640218/4938409.pdfIn PDF document text
    • http://joystagela.com/uploads/1/3/1/3/131398004/zosafefil.pdfIn PDF document text
    • http://webgripinc.com/uploads/1/3/0/7/130738912/cf17f26fa680.pdfIn PDF document text
    • http://mindfulcollegeadmissions.com/uploads/1/3/1/4/131407083/8452748.pdfIn PDF document text
    • http://thehatpursecorporationofamerica.com/uploads/1/3/0/5/130589058/madudujifuw.pdfIn PDF document text
    • http://legendarymotorcar.net/uploads/1/3/1/0/131070375/4557701.pdfIn PDF document text
    • http://unicornsandwe.com/uploads/1/3/0/8/130874143/zefebazikorule.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 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_off00007afb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AFB 9144 bytes
SHA-256: 7cc677f12aa42c9242bb534d4b9134a4ee9127b1583696b9c01cf86d010a4cf9

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