Malicious PDF — malware analysis report

Static analysis result for SHA-256 66689c84b9c5eed9…

MALICIOUS

PDF

41.8 KB Created: 2020-08-14 03:31:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e06c8435ec1f0387f56133d67d849ba3 SHA-1: 732ee566e83260dc9dfaaf0822432af338ef6e4b SHA-256: 66689c84b9c5eed9be007c50bdf58ac4e5a09ba36ab42c8b06e2243858fb3e86
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service, suggesting a link farm or phishing campaign. The document body, though heavily obfuscated, contains text related to 'Avengers movie collection' and a URL that is also present in the heuristics, indicating a lure for free content. The ML classifier strongly flagged this PDF as malicious, and the presence of redirector links confirms malicious intent to lead users to potentially harmful sites.

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=avengers+movie+collection In PDF document text
    • http://juvote.irishwolfhounddog.com/uploads/1/3/0/7/130738755/zedura.pdfIn PDF document text
    • http://files.dalessandroscouting.com/uploads/1/3/2/6/132680962/favosisejuw-gisex-menot-bedunefisibeg.pdfIn PDF document text
    • http://files.sdp.scot/uploads/1/3/1/6/131637658/be4c9113a511a.pdfIn PDF document text
    • http://files.dvs-cleaning.co.uk/uploads/1/3/1/8/131871701/lipusa.pdfIn PDF document text
    • http://jetolo.flatspokecycles.com/uploads/1/3/1/4/131405927/fae9e66130b2c.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/1/0429/9902/1717/files/1224345356.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7184/0161/files/myers_briggs_personality_test_results.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8491/4583/files/tagewetige.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6491/8165/files/61250761914.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9322/1783/files/77980585726.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/87195604050.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4678/0566/files/adjectives_of_comparison_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/646255477.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/rititevufilobiwozivulu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3225/5392/files/70998638926.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6535/1073/files/vubivigewutaputige.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4414/1218/files/water_pollution_sources_effects_and_control_measures.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_off00006333.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6333 4956 bytes
SHA-256: d7e3ab71624f06f4d24f22dae57f0af982bbd29f042e103bfe2958dbda4dd34c
font_01_sfnt_off00007402.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7402 10780 bytes
SHA-256: 2056b939bd06ab1bd9892f4a4c5f66318c149d7aa0f8e74d32e41429a41ea609

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