Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea1ba6a099703f60…

MALICIOUS

PDF

44.5 KB Created: 2020-08-19 02:45:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 86fbc4e8d5c23edb503ebeada8108540 SHA-1: 88a1833de0fd15d5f179d4d116feace4ef1a0f96 SHA-256: ea1ba6a099703f604f5dd16d082f4e58af03510649ae53c903cece8731b79ca1
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to a link farm hosted on Shopify, designed to appear as legitimate academic documents. The primary malicious link, https://ttraff.ru/pify?keyword=gate+2020+aerospace+syllabus+pdf, is identified as a redirector to malicious infrastructure. This suggests the document's purpose is to distribute further malicious content or conduct phishing by luring users through deceptive academic lures.

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.ru/pify?keyword=gate+2020+aerospace+syllabus+pdf In PDF document text
    • http://nogal.burningswordsmenstudio.com/uploads/1/3/2/6/132681579/e90ff5e51119.pdfIn PDF document text
    • http://fepedesul.talentlessandoptimistic.co.uk/uploads/1/3/1/4/131438096/b3e1427bc.pdfIn PDF document text
    • http://files.hollywoodlandpod.com/uploads/1/3/1/3/131398143/de2c65b29d1e69.pdfIn PDF document text
    • http://birukowiz.sierissa.com/uploads/1/3/0/8/130874038/duxapuba-negogizir-digibaj.pdfIn PDF document text
    • http://files.uhbands.org/uploads/1/3/1/1/131164573/669142.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/1/0429/5763/5735/files/41291345303.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1712/6563/files/70781784805.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6980/6494/files/xerobibuxolibamuxoduw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7118/3777/files/grammar_test_for_grade_9_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0550/1852/files/vesipitopav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2177/7570/files/ganovenigelesexonu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6088/7705/files/35937112697.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7955/7535/files/maxtor_external_hard_drive.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3885/0719/files/agriculture_statistics_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8119/5927/files/ciencias_naturales_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5486/6333/files/tulamonologolazorabo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8276/6750/files/antibioticos_veterinaria.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 3

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_off00006d7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D7D 5696 bytes
SHA-256: 3f9479c7c79ce08fc7593725ddb72887bbdfcc14e50b7e582db9597f20cd7535
font_01_sfnt_off000080f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80F5 10700 bytes
SHA-256: 6117a8fbae0cc6b0ead2bf09b369732c776673358f8bfba441e5cbb8cb7b0a84

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