Malicious PDF — malware analysis report

Static analysis result for SHA-256 5faed79f1b718e51…

MALICIOUS

PDF

38.4 KB Created: 2020-09-10 07:44:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 05e39db6dbe5be640d82c0e7b1ac7370 SHA-1: 79a2f37352c85ff549a26de43fba1f04b74cd29c SHA-256: 5faed79f1b718e514401758c017dc4b7e5a5a0ea8efabb06aa3c7a98e88a4fef
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though obfuscated, contains the URL 'https://ttraff.club/wix?keyword=hd+background+free++photo', which is also flagged as a high-risk SEO redirector. This suggests the PDF is designed to trick users into clicking through to a potentially harmful website, likely for phishing or malware distribution.

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.club/wix?keyword=hd+background+free++photo In PDF document text
    • http://files.cassidyforcc.com/uploads/1/3/2/6/132680994/5787021.pdfIn PDF document text
    • http://menofineb.maltingsstructures.com/uploads/1/3/0/7/130775818/1180863.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/1/0431/3382/9277/files/mibap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/3540/5986/files/adenosina_farmaco.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8760/9497/files/atm_card_application_form_for_iob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6890/0006/files/84424859799.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/4c4e45_6fc8a54ab4224c4c8ea43924c34f82ee.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/1cc7e8_0f0114984fb94dec9c040bc89da3d5a9.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/9f06f8_b48badb3b05847a6b858719f7fbe0058.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/fe0276_fa8763940f9143f7ae735b3aa1f950ac.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/09273f_cd41635ce82f4e01a8bf937715e5ac8b.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/564d2e_65561e06893c41348476dfa588280d1c.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 3

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_off00005769.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5769 5372 bytes
SHA-256: c58a8a9982ce8c51e010c3fbad9680482f9830967de84cee0c481889b1e09fdf
font_01_sfnt_off000069a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69A7 10460 bytes
SHA-256: 14e1cf79b4b1e4b7bc9c5dc33efb551986df02eed526d5bf08b89fb3bd9d5d61

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