Malicious PDF — malware analysis report

Static analysis result for SHA-256 72e691587eafc5b9…

MALICIOUS

PDF

47.9 KB Created: 2020-08-02 09:44:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fb403cebae72b510f4421eead0a7e0df SHA-1: 9320284d5115d0c0163c53981db4c3d84845a7a3 SHA-256: 72e691587eafc5b974f9004b7804f2c161f0d491b1cbfa02fe81dda0de0c11c7
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirection and a link farm, with a critical finding of a link to known malicious redirector infrastructure. The embedded URL and the document body text point to a lure using a 'singleton design pattern' keyword to entice clicks. The primary malicious IOC is the redirector URL, which likely leads to a phishing or malware download site.

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=singleton+design+pattern+in+c%252B%252B In PDF document text
    • http://files.sharonviewcorpcenter.com/uploads/1/3/1/1/131164308/wofutojojefume_turemomid_nisanigoku.pdfIn PDF document text
    • http://files.perfect-stride.com/uploads/1/3/0/7/130740191/putaxevatovofidewar.pdfIn PDF document text
    • http://files.peoplesresponseteamchicago.org/uploads/1/3/1/3/131379382/9654654.pdfIn PDF document text
    • http://files.cynthiahoyle.com/uploads/1/3/2/3/132303374/281795b96f9f59.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/1/0431/1567/5809/files/64541596562.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8374/2884/files/virilopaxeduvisozab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2011/4331/files/84046870671.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1423/4017/files/dagotaxojorerure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1531/4330/files/zutajujomifinelojiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0492/7905/files/natawanegoromij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8475/9711/files/lamos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3544/3875/files/xebapufinumezavaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3786/5637/files/43841115968.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/48787523288.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8867/4967/files/75413635080.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9513/0266/files/wogatupixutiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6856/3355/files/tuwapewubapeler.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_off00007681.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7681 5344 bytes
SHA-256: 304915ef4ce45246439c2b728fd84593ad7586b562051ddd1526c24ac12b90e4
font_01_sfnt_off000088bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88BC 13116 bytes
SHA-256: 53dede398a63ab661542535e03883a7d199e29c5d3fc5c7bfa3acc9e5db56137

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