Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fbc862ac2753abc…

MALICIOUS

PDF

59.0 KB Created: 2020-08-09 15:07:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 52e32aa9795dcbbe6b4305bb1f7f28a5 SHA-1: c7a36a3ec523c50e2355f1fff29efa9c7355ff5a SHA-256: 7fbc862ac2753abcacbd23cd138bef7d0059229356c0d3f5852c92acd4df44b4
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains embedded links that redirect to malicious infrastructure, specifically identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The document body, though heavily obfuscated, contains a URL that appears to be a lure for installing LSPDFR callouts, suggesting a social engineering tactic. The presence of numerous external PDF links also indicates a link farm, likely for SEO manipulation or to host further malicious content.

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.ru/pify?keyword=lspdfr+callouts+installieren In PDF document text
    • http://files.gabriela.is/uploads/1/3/2/6/132681698/fuwexubekoli.pdfIn PDF document text
    • http://files.arcubusensemble.com/uploads/1/3/1/4/131453990/wekeka_siwixuna_wanitizu.pdfIn PDF document text
    • http://files.henestrosastudio.com/uploads/1/3/1/4/131438538/pukupale.pdfIn PDF document text
    • http://reluvuz.artpourparties.com/uploads/1/3/1/4/131437044/jobunupenabojatew.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/1/0449/9714/8836/files/critical_theory_reader.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6731/0231/files/22782858979.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8566/9279/files/perovotadibirasakamif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nasodidupafulad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9311/5548/files/britax_marathon_clicktight_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0916/0862/files/gozisi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2186/8960/files/tetiminuxokigoxorimasebit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6382/0959/files/nirisufisilexekawe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1172/6750/files/46615458100.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5072/9634/files/fawedikexofakezipomujefu.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 8

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_off0000a90f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA90F 5092 bytes
SHA-256: bf31d5cc8f4a193fa7fa70735f258bf3bc215106b8352eda4efe8ac88e05bb28
font_01_sfnt_off0000ba76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA76 10820 bytes
SHA-256: 678eaa0567245eb89e336afa47a6eb6ce48c440837673629f3e7c4ee59ae061a

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