Malicious PDF — malware analysis report

Static analysis result for SHA-256 6480f8e6177e0747…

MALICIOUS

PDF

41.2 KB Created: 2020-08-19 11:56:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8512851a79a7acd046579127b02b94cb SHA-1: e73bbea6f9421354619d34d7b597a2386456deb4 SHA-256: 6480f8e6177e0747a92d60da5f091d63efe0ba459107bc476a9b4cc9f2d6ff85
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.ru) that is flagged as malicious. The document body text, though heavily obfuscated, contains URLs that appear to be part of a link farm designed to lure users with promises of free downloads, a common phishing tactic. The ML classifier also strongly indicated maliciousness.

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=encyclopedia+of+mathematics%2528+science+encyclopedia+pdf In PDF document text
    • http://xisuvewad.peregrinosysusletras.net/uploads/1/3/1/3/131398405/1ee9b2e.pdfIn PDF document text
    • http://tejuxip.edrenzi.com/uploads/1/3/1/8/131857114/kodolabaxizuki.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/1/0430/5040/1943/files/suvagave.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5959/2864/files/enrique_iglesias_euphoria.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6278/0311/files/pexowewaziwamivorure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6294/3144/files/83942838446.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0154/3831/files/german_b1_course_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71062637782.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3867/1010/files/99212915871.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2903/7219/files/agenda_docente_2020_para_imprimir_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5621/8780/files/tarot_aleister_crowley_espaol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/jquery_ajax_complete_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0250/2048/files/fesoxopovanigawusux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4444/5092/files/duwuzelotebupapex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8914/1664/files/alter_ego_plus_a2_guide_pdagogique.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_off00006108.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6108 5436 bytes
SHA-256: 4871bf65006c23388d32e16873d1370406f62352026644248d34c80a8ca15da1
font_01_sfnt_off0000736d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x736D 10684 bytes
SHA-256: 9167520a20344d206d445d5cde9257cca2663ea981e39f68e45014c07ef4b310

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