Malicious PDF — malware analysis report

Static analysis result for SHA-256 84281112129f8c2c…

MALICIOUS

PDF

41.4 KB Created: 2020-08-22 11:22:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7afc6eec01f67fdd9559d78fa5d3fd7f SHA-1: cb573821270dd33847b2d9b56fbabe4009b914ac SHA-256: 84281112129f8c2c5899d52361b29b7506e6d5fbfb6c7815766a781af729c344
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM heuristics. The document body, though obfuscated, contains a URL that is also present in the heuristics, suggesting a phishing or scam attempt. The ML classifier strongly supports the malicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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 https://ttraff.cc/pify?keyword=homer+simpson+bush+meme+template In PDF document text
    • http://lemimaxid.rubypurplecreations.com/uploads/1/3/2/7/132712416/7de6ac630527b.pdfIn PDF document text
    • http://files.ellibrodeespanol2.com/uploads/1/3/2/7/132712096/duseresadomadetoroj.pdfIn PDF document text
    • http://files.east-pto.com/uploads/1/3/2/8/132814611/vedabuvopobej-fakuwud-vomaba.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7786/0516/files/rasenonur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9770/1032/files/25267820234.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9452/3552/files/waiting_for_table_metadata_lock.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0963/6512/files/dibujarte_s3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9363/8811/files/piboroso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5564/3813/files/ahmet_hamdi_tanpnar_huzur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8789/6480/files/wonosofaximopuzewise.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7047/9772/files/manual_catia_v5_espaol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4015/3505/files/pipinalodavenegadufeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1796/0600/files/51749911832.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

Related samples 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006497.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6497 5160 bytes
SHA-256: 8369cc5642390459f6535d24c7e09a0d5055fc5b4b63ffc2ee22bbb4305a76ed
font_01_sfnt_off000075e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75E8 10256 bytes
SHA-256: f2180a09022e632bc29ee52b437affb3146379d0430a2d91ec90213267482a89

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