Malicious PDF — malware analysis report

Static analysis result for SHA-256 109b3627b6a40d13…

MALICIOUS

PDF

40.3 KB Created: 2020-08-16 13:41:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8e6d38dff4b10a36cdd3fe39c085534b SHA-1: b23dfbef2615346a6791a677e05d46612d6ae75f SHA-256: 109b3627b6a40d130cb09064dc7322cdbe340f89e459dd00084f0ab077fc9e1d
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a malicious URL, identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The document body and heuristics suggest a lure to download content, likely malicious, using a link farm strategy. The ML classifier also strongly indicated maliciousness.

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/wb?keyword=godfather%202%20script%20pdf%20download In PDF document text
    • http://jubapego.giocosonl.com/uploads/1/3/0/7/130740596/0e58da9c16.pdfIn PDF document text
    • http://nijase.buzzsalonnorthfield.com/uploads/1/3/1/1/131164250/b77520f.pdfIn PDF document text
    • http://files.perkasiehistory.org/uploads/1/3/2/6/132682899/wazetemuzez.pdfIn PDF document text
    • http://files.rapturebibletruth.com/uploads/1/3/1/3/131382092/863bd.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/1/0428/9835/8432/files/suramagufumaxuragozud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2347/4583/files/18339938395.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4778/8450/files/viruromujojosogan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1008/8357/files/82327534439.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9302/4149/files/xebumedelerefimisemo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7465/0261/files/fikufi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1491/3191/files/86101805425.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9480/1568/files/jagididaj.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_off00005cb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CB2 5496 bytes
SHA-256: 8cfb0dbbbebe144d0525345bd0d0d0f7811bfa44ac124581aa772e6a0cef380b
font_01_sfnt_off00006f7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F7F 10852 bytes
SHA-256: 7adcd39aab1849ab45ebd04a27d56517996e65b004d7009bfc23e596e2997763

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