Malicious PDF — malware analysis report

Static analysis result for SHA-256 4aec6000cb3af088…

MALICIOUS

PDF

34.1 KB Created: 2020-08-17 17:17:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c07c3d5f2aa7549ce45fa11658f154d1 SHA-1: 67a9efdbb6a8effbbdae4e51723170a83b6e7ac3 SHA-256: 4aec6000cb3af088ca881ad68b65e7ae16ff76004f30bd922cf657f6c0a5b81d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Phishing:Spearphishing Attachment T1204.002 Malicious Link:Malicious File

The PDF file contains a significant number of embedded links, with a critical heuristic firing for a PDF link to a known malicious redirector. The document body and embedded artifacts suggest it is a crafted PDF, likely intended for SEO manipulation or as a lure. The primary malicious URL identified is ttraff.com, which is flagged as a redirector.

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.com/pify?keyword=principles+guidelines+synonym In PDF document text
    • http://files.donemanapc.com/uploads/1/3/1/8/131856392/2745554.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/1/0452/6866/4481/files/standard_bolt_sizes_chart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2470/1845/files/64750074354.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/41985251105.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2938/8699/files/89894890298.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pejodogidevetakuranuwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0507/4838/files/2008_hyundai_tucson_repair_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6693/1862/files/casting_types.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0326/4667/files/bpmn_2._0_introduction.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0667/9447/files/situwag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6197/8023/files/jidinoruregano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3778/4224/files/vitamin_d_supplementation_and_prevention_of_type_2_diabetes.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_off000047a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47A2 5284 bytes
SHA-256: 069f42e9dd7a0b9c8aeab28914c92845350f731d54b7f14d6cda45f89f2c0d44
font_01_sfnt_off0000598a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x598A 10224 bytes
SHA-256: 9c8c0401cd0fd3e4e62536fd3853f3db564f2a4722cc9e625ce2ad1bc199abf4

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