Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4418fba59ab8532…

MALICIOUS

PDF

33.4 KB Created: 2020-08-13 12:49:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 70d96000f3dd3870321da13ab93147ed SHA-1: e9e8acd4e6d70bda123ed99befb3b4896d956e98 SHA-256: d4418fba59ab8532c19189cb57c1cf61fe402901f9079de833f68811073369eb
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely used to funnel victims to further malicious content. The document body, though partially corrupted, contains text suggesting a lure related to educational materials.

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=wordly+wise+3000+book+8+lesson+11+pdf In PDF document text
    • http://files.redwagonpreschool.org/uploads/1/3/1/8/131857305/todamepodab_dawabuvit_jafiru_kutovabi.pdfIn PDF document text
    • http://pimewo.krazines.com/uploads/1/3/1/3/131383444/7357067.pdfIn PDF document text
    • http://files.gaventrinidadtheatre.com/uploads/1/3/1/4/131406365/7107289.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/1/0433/3443/4969/files/obstacle_avoiding_robot_using_arduino_ir_sensor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/63545483179.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8865/8078/files/bugamexikelusakabip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tiwimuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2646/5436/files/23237405041.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7877/0076/files/10041199262.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4145/5254/files/62727779355.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8333/9678/files/celiac_disease_pathophysiology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8751/8104/files/xefamonikevubug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5214/6587/files/armed_robbery_in_nigeria.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8665/8213/files/dijodorebarawatufa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9860/9566/files/34560908348.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8607/8369/files/goparexu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9114/8444/files/top_hr_questions_and_answers_for_interview.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_off00004594.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4594 5788 bytes
SHA-256: 6281853527bd2c11864e4d393b7b69ec04287da754d9c13a9fbfe7281e1bc5ef
font_01_sfnt_off0000597f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x597F 9036 bytes
SHA-256: 9e684856654ad06878904f8ee468f129b85467c9a727cc082ec6b54b90f88d87

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