Malicious PDF — malware analysis report

Static analysis result for SHA-256 71249b5848d5e6a3…

MALICIOUS

PDF

45.2 KB Created: 2020-08-04 22:40:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b92ff3d873beba6795781420853bd29e SHA-1: 28c27e0dfde568f7b14ae42b95e65638d00cf69b SHA-256: 71249b5848d5e6a31fade56526a8b28c82427b0c8e8dab61541e59ac28510f50
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many of which point to a redirector service that is flagged as malicious. The document body also contains the same malicious redirector URL, suggesting an attempt to trick users into downloading potentially harmful content. The presence of a large number of SEO-optimized PDF links further indicates a link farm or phishing campaign.

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=legend+of+zelda+ocarina+of+time+walkthrough+pdf+download In PDF document text
    • http://rovoz.ontmoetpalestina.nl/uploads/1/3/1/3/131398428/9508919.pdfIn PDF document text
    • http://files.connectionsgifu.com/uploads/1/3/0/9/130969873/22cb00a9.pdfIn PDF document text
    • http://files.olgaandflo.co.uk/uploads/1/3/2/7/132712282/637aa5c71085.pdfIn PDF document text
    • http://files.whitstablemusicsociety.org.uk/uploads/1/3/1/4/131409128/xesuma_radisomuruz.pdfIn PDF document text
    • http://pikaj.armadalecoc.com/uploads/1/3/1/3/131398008/8742919.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/1/0435/6354/8833/files/90217147300.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/82973104521.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3703/8494/files/git_cherry_pick.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7857/4490/files/larisapumebuxipovozuku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9403/2025/files/minecraft_xray_texture_pack_1._7._10.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5578/2817/files/93468964885.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4752/6305/files/kanuregogefazajuda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vepotarinaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/98690712505.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4492/0734/files/62614675033.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2353/2195/files/3129941563.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4622/4551/files/bujomewudedatagob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1518/4295/files/41211144634.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9775/9643/files/46918415291.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 4

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_off000071e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71E9 5536 bytes
SHA-256: 9989113b947f2db0c9c3449f63f27aa308c5289ca7a90557599bfced4f1a2b62
font_01_sfnt_off000084c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84C0 10068 bytes
SHA-256: 8c1e469587aac124ef3ef05012b9cfbb43d85ffc95cc5e1959aaceed1cce5527

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