Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbf3effd1532cd3e…

MALICIOUS

PDF

46.6 KB Created: 2020-07-28 19:33:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f47ca9be994661039bc4ddd3fd410ab4 SHA-1: c877fea4e3eacc1933bb9035db3979e5ba2fcba3 SHA-256: bbf3effd1532cd3e7ce58f107618298a4639d46762fe46ed2e69a3e89a0575c8
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. Additionally, it exhibits a PDF link farm with numerous external links, many hosted on Shopify, suggesting a coordinated effort for traffic redirection. The ML classifier also strongly flagged this PDF as malicious. The embedded content appears to be obfuscated text related to 'Three dimensional figures lesson 11. 4 answers', likely a lure.

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=three+dimensional+figures+lesson+11.+4+answers In PDF document text
    • http://files.lisazimblerevents.com/uploads/1/3/2/7/132741110/0da487.pdfIn PDF document text
    • http://files.sanctuaryuw.org/uploads/1/3/1/4/131437859/jezimowijene.pdfIn PDF document text
    • http://files.hillsdalecountychamber.com/uploads/1/3/1/4/131453577/8569136.pdfIn PDF document text
    • http://files.drewbufalini.com/uploads/1/3/1/8/131871633/e5038f1cd631.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/1/0435/3074/8072/files/82606920390.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/84593422723.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8178/4734/files/81795550710.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0645/1094/files/72254258851.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8867/4967/files/wulesukiwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0870/5187/files/26970266162.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7727/0692/files/toxukofewewegezegib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3863/8241/files/tanorixax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6828/3294/files/17921916694.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7578/7162/files/37058876247.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7118/3777/files/22269159180.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1572/3414/files/lasexomujaponigip.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_off00006ce4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CE4 5336 bytes
SHA-256: ef85a157c69cb3bedade87f53fc3e2313bb326224f1dda998538f9b2669ce130
font_01_sfnt_off00007ef7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EF7 14684 bytes
SHA-256: c616765d9b3bf81f4e88362c090c329d45d099ec7ca3910754f213e8dae7233e

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