Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c74fe70257101c1…

MALICIOUS

PDF

35.4 KB Created: 2020-08-15 00:20:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f49f8605baf01862e1b6952d8aa5fa7d SHA-1: 698a7ccfd961c737f03a4cd4939a562e8f2bed75 SHA-256: 6c74fe70257101c117fa8ad8ec118b496edfd69eb16c45a8e8d9cd3aa4f813fa
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, specifically identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text strings and URLs that suggest a lure for free content, likely a phishing or scam attempt. The ML classifier strongly indicates maliciousness, and the presence of multiple SEO-linked redirectors points to a campaign distributing 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.cc/pify?keyword=choral+music+sheets In PDF document text
    • http://lavujat.coleenthoulihan.com/uploads/1/3/1/8/131871721/xazuligesisof_vexikudomiro.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/1/0427/8134/3900/files/juwunotutuvodexozudok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6350/1222/files/mangastream_is_gone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9612/1251/files/viking_range_repair_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5654/4409/files/1995_lexus_ls400_repair_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6690/8065/files/tovetok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4441/2314/files/gofalarusuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8644/4699/files/beps_action_plan_8.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8684/7905/files/11672476284.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0721/2694/files/zogabefofiramefowejogez.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_off00004e69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E69 4944 bytes
SHA-256: 737c6b030a9340aa541b68d6bd3e49ecfb7e6cdfcd520499bb6383d31e78f955
font_01_sfnt_off00005f0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F0B 10084 bytes
SHA-256: 0d4b9aab6d1228988bb0273a047e0ae07c65a86773a9aa0c0f0a6370362d7e02

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