Malicious PDF — malware analysis report

Static analysis result for SHA-256 af84587993be702c…

MALICIOUS

PDF

49.0 KB Created: 2020-08-11 00:49:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2d8cb0e87be05f9e8195d7f550e67b33 SHA-1: e468ecd090d998ec59dd5030ef9346f561e3fa28 SHA-256: af84587993be702c0dd20c32df63ade8d95ee8d8b79d80e6a691f07589dc959c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains multiple embedded links, with one pointing to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body, though malformed, contains the URL that triggers the malicious redirector, suggesting the document's purpose is to redirect the user to malicious content. No scripts were extracted from this sample.

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.com/pify?keyword=design+sprint+o+reilly+pdf In PDF document text
    • http://bifigifu.madxllc.com/uploads/1/3/1/4/131438453/vexovuf.pdfIn PDF document text
    • http://files.glintofmischief.com/uploads/1/3/1/8/131856173/bepifixejuxomo.pdfIn PDF document text
    • http://files.christiewilsonpsychotherapy.com/uploads/1/3/1/4/131437123/7639313.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/1/0433/4993/4231/files/velew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0621/4819/files/tebozaromekekowawabamiwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/4500/8039/files/caracteristicas_de_los_aditivos_alimentarios.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6265/6157/files/creative_writing_rubric_grade_5.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6649/1031/files/terraria_creative_mode.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3437/6352/files/miller_symmetry_groups_and_their_applications.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gojifazuxosupimuron.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0727/0312/files/javascript_append_child.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3140/3413/files/alcoro_portugues.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8346/3832/files/lixatovegid.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 1

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_off0000828e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x828E 5100 bytes
SHA-256: c0462b8ee1ea424d99ce970e0cd5a267d33501db7bd3daf89de60784f7d4d74a
font_01_sfnt_off00009402.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9402 10436 bytes
SHA-256: 32886b8c0fa9264ed9e0dd9c486fd75a1246a2cca5a9b47116edb85544156c04

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