Malicious PDF — malware analysis report

Static analysis result for SHA-256 c360052569da494c…

MALICIOUS

PDF

51.8 KB Created: 2020-07-29 13:09:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4c2e706e4ee432896dd5a812f4670a47 SHA-1: 8080c6c1530e23415b587460e866a5a0e5aebb56 SHA-256: c360052569da494ccd1771d5b4df1307024b7b83f968f5c4a7c3658ffd407355
194 Risk Score

Malware Insights

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

The PDF file 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 infrastructure (ttraff.cc), and another identified a mass external PDF link farm. The document body is heavily obfuscated, but the presence of 'Etapas del aprendizaje significativo pdf' suggests a lure related to educational content. The primary attack pattern involves directing users to potentially harmful websites through these embedded links.

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=etapas+del+aprendizaje+significativo+pdf In PDF document text
    • http://files.cambridgeearlymusic.org/uploads/1/3/0/9/130969061/bokufufuwutuvoba.pdfIn PDF document text
    • http://files.magicalmary3.com/uploads/1/3/1/3/131381374/10f70.pdfIn PDF document text
    • http://files.islandcitypublishing.com/uploads/1/3/0/7/130776327/monidel.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/1/0432/9802/9733/files/89618863332.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6346/0508/files/19302024786.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7180/7381/files/90399689283.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4387/2153/files/donumezijubewijub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8231/7975/files/fuwafor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2040/2337/files/rizivosumu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wojilezufaguxulidumusad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8510/3255/files/79271373578.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bumagigefabap.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_off00008c78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C78 5256 bytes
SHA-256: fea599fb8a7786d434edcf7f7184584bc0481523ab33463ff84cc48f54d0ec2d
font_01_sfnt_off00009e77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E77 10332 bytes
SHA-256: 2bd65f713ac22e5386056b003907d9401edc71d3a15052c7c960f93f072ac8bf

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