Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ec5c0a8ae7cc65f…

MALICIOUS

PDF

41.8 KB Created: 2020-08-08 06:17:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bbbe46c939bbc2e576c8e4978b20205f SHA-1: c87b98cb5b151a0e80eca570f9845bdf05d750bc SHA-256: 7ec5c0a8ae7cc65f6db0389e3ccf2bed8c00c97e08b05c62589cba94d952407f
194 Risk Score

Malware Insights

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

The PDF contains numerous links, including one to a known malicious redirector, disguised as a 'Zelda encyclopedia pdf download'. This lure is intended to trick users into clicking the link, which then leads to potentially harmful content. The presence of multiple embedded PDF links suggests a link farm designed to improve search engine ranking for 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.com/pify?keyword=zelda+encyclopedia+pdf+download In PDF document text
    • http://wuzisepen.thaideemaew.com/uploads/1/3/1/1/131164250/gusufotelujekuka.pdfIn PDF document text
    • http://files.susanaaleixolopes.com/uploads/1/3/1/4/131453255/gususuxatupi.pdfIn PDF document text
    • http://files.mckevlins.com/uploads/1/3/0/7/130739462/disunifu-jovukokug-motalarawax-fijipew.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/1/0433/5199/8623/files/bijawatowerekus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3799/0805/files/minupimavedapafamesujobef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8225/2442/files/fuzugomujo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8832/1438/files/32441208598.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1642/1529/files/php_download_blob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4007/2092/files/98189072803.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4852/6246/files/diwudokevapotolenuxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8207/1716/files/66901462898.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2681/6932/files/puborokomatofoke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7300/2902/files/finoxixepidajaxigumumir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5053/2001/files/20846675548.pdfIn PDF document text
    • https://downloadpdfone.blogspot.com/?sale=150670638XIn 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 3

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_off00005ae6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AE6 5028 bytes
SHA-256: d144876fbd8fe9f5334d22b2bb146c9f354f0dd8fa979b7b01b598b4ebd35883
font_01_sfnt_off00006c36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C36 14972 bytes
SHA-256: c0997bdd415cbec5738f8d7d2eb11c0563e3dbe294981ad2345f93ef82fa2104

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