Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ef11a9eee90ae2b…

MALICIOUS

PDF

54.5 KB Created: 2020-08-25 05:18:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1df343ff26034030d50650312befb96e SHA-1: 0a40a70fdec403540c35b3515cb228ff4d0e8058 SHA-256: 6ef11a9eee90ae2b07e8eb5f62d837cfef8fc570a8b1342716e38e609019a97c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains multiple heuristics indicating malicious intent, including links to known malicious redirectors and a link farm designed to host numerous PDFs. The document body, though heavily obfuscated, contains a URL that points to a redirector, likely intended to lead the user to a phishing site. The primary purpose appears to be luring users through a fake test to a malicious 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.cc/pify?keyword=analytical+ability+test+pdf In PDF document text
    • http://vegulusix.ameliasherry.com/uploads/1/3/1/3/131379730/kejelebizogela.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/1/0430/1661/8145/files/zeguxabumuber.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9131/9201/files/jigejedefonovapatazawijov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6300/0734/files/81145297233.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2207/2480/files/35156390449.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6166/5192/files/xemevekum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3696/6055/files/65943746194.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/8740/0864/files/microsoft_word_mailing_label_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/7560/8214/files/stalker_shadow_of_chernobyl_highly_compressed.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_off000097f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97F8 5284 bytes
SHA-256: bc8f3d7e54f3e22021ba8418f51fb0ea726abdcc3d81461014cf1dc91c2759a4
font_01_sfnt_off0000aa00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA00 10376 bytes
SHA-256: 9b773f82b4a37fdcd7198b30cfd8afccbfd36939d69783af9393e477a86a15d0

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