Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e3b78b34a7e76f3…

MALICIOUS

PDF

36.7 KB Created: 2020-09-16 17:11:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-19
MD5: 08901899c4eb7fc176c31f1370bffcc1 SHA-1: 9e0ca294a419c8002d615a1e20eea210be521ef1 SHA-256: 4e3b78b34a7e76f31154f7d6647094d1ab34b7a16b59b6da877866f1a12fc06f
194 Risk Score

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.link/wix?keyword=south+shore+collaborative+quest+program In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://f9238c45-0fda-4e34-85d1-3e4af8cfdbd0.filesusr.com/ugd/60e703_7b0318f2f8a942b387d23b168a540d77.pdf?index=trueIn PDF document text
    • https://92d0796a-40da-493f-afe1-ad583e9bfaa2.filesusr.com/ugd/510a18_cfcfd7d0db4b4be6937b44172119873b.pdf?index=trueIn PDF document text
    • https://5f5f57a2-024c-416d-b131-3f8387915188.filesusr.com/ugd/b56239_80c45ee581da44139ee44361271c4953.pdf?index=trueIn PDF document text
    • https://92f85fa5-14e9-499d-93fd-6f97f249a21b.filesusr.com/ugd/60e703_627a775800744900971ba04e8f284a67.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5225/3863/files/61392060957.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8575/7606/files/fleecy_dryer_sheets_msds.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5902/5822/files/apple_ipod_manual_classic.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9444/2145/files/gadagidubakudasoluresada.pdfIn PDF document text
    • https://ed3bc789-fc7f-4b31-8c3f-07ec22f249fd.filesusr.com/ugd/35f767_b53e4014595b441f8a1360d90189a71e.pdf?index=trueIn PDF document text
    • https://b1741157-d8a0-40ff-a584-b2a2002d9b4b.filesusr.com/ugd/c83fdb_e9e4c767701a42189560eef9f2d234c4.pdf?index=trueIn PDF document text
    • https://2a0a04d1-364b-4c19-9a2a-b13c13773aec.filesusr.com/ugd/26481d_0589e5ecf8514ae1a85d8ac2956fd207.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4764/8406/files/20107483964.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/9478/6455/files/47600898920.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/5330/1142/files/31949033923.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004fa7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FA7 5776 bytes
SHA-256: 728a3a11052a8310c609ea965f59568dcc9ed47034bf5654731519d0668ffd65
font_01_sfnt_off0000632f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x632F 10256 bytes
SHA-256: b2e3af709e4f95bcd3540ea5c7543f4ea83a37262551f3d5d535173b89dd4dd7

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