Malicious PDF — malware analysis report

Static analysis result for SHA-256 bef744197ccf0c4f…

MALICIOUS

PDF

42.1 KB Created: 2020-08-24 21:28:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c61e604b52ae13eeca76c5f1773419af SHA-1: f6d3b5b231b632de835fa42566027510980e83bb SHA-256: bef744197ccf0c4fbd34ff180009fc814fad690b4b00f18a346c242be4ccb0d0
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1059.001 Command and Scripting Interpreter: PowerShell

This PDF file contains a large number of embedded URLs, including a critical redirector link to 'ttraff.cc'. The document body, though heavily obfuscated, contains text related to 'Kone escalator design guide' and the malicious URL, suggesting a lure. The presence of numerous external links, many pointing to Shopify domains, indicates a link farm strategy to potentially improve search engine ranking or distribute malicious content. The ML classifier also strongly flagged this PDF as malicious.

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=kone+escalator+design+guide In PDF document text
    • http://donura.cleansheetsmfg.com/uploads/1/3/2/7/132740763/mikivepow_welevutox_nedolida.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/1/0430/9496/6436/files/36250854804.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1044/8798/files/43980990611.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5719/1843/files/repiwexuxuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7543/6705/files/rawid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4751/0435/files/pizefowileriwuluw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/7168/5027/files/catia_assembly_drawing_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5313/8591/files/bbc_sport_championship_form_table.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0631/2091/files/timeline_roadmap_powerpoint_template_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2143/4023/files/98209876457.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2041/8198/files/kezexidajapixuxobur.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_off00005cc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CC1 5076 bytes
SHA-256: 54b52a0beeb4e3d7791424f1705603315fdf4a18495531c8bec4f45c7a24f5c8
font_01_sfnt_off00006e0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E0F 14876 bytes
SHA-256: 360bb4d603a27df67372c1cc1f9ceac62bf64f46f9aaa0bdad6d73ebc65b1b81

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