Malicious PDF — malware analysis report

Static analysis result for SHA-256 6598cf8dae1e9484…

MALICIOUS

PDF

42.8 KB Created: 2020-08-19 16:25:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4fae8b9879c5f0470f71ce320651d935 SHA-1: 7f87d8758bc49b3c7022908dd693a716a752b21b SHA-256: 6598cf8dae1e94842beabe112b4f0c6c7b41132df04c3215c91704be1e57257a
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service at 'ttraff.ru', which is flagged as malicious. The document body text, though heavily obfuscated, includes the lure 'Certificate of origin form south Africa' and the malicious redirector URL. The presence of many links suggests an attempt to distribute malicious content or phish for information, likely via a spearphishing attachment.

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.ru/pify?keyword=certificate+of+origin+form+south+africa In PDF document text
    • http://xonedi.minniefairytales.com/uploads/1/3/1/3/131383483/fudapapakor.pdfIn PDF document text
    • http://files.jtdentalgroup.shop/uploads/1/3/1/3/131384127/2271165.pdfIn PDF document text
    • http://files.denverchinesesource.com/uploads/1/3/2/8/132814544/dovokukumowepiwaz.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/1/0427/7361/0663/files/tiluziseliz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3359/8880/files/difumusotid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5108/0087/files/kisaginuromerelapowi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9513/7181/files/pathfinder_halfling_opportunist_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9443/4207/files/45150836933.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/7860/3172/files/marketing_research_for_mba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7114/3078/files/wuzovedubogejumowuba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7826/2689/files/gesikifinakejesow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8710/9023/files/93716857882.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2208/2460/files/46971750904.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9191/1066/files/40939670336.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2299/2028/files/51522947442.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 2

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_off000068d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68D8 5168 bytes
SHA-256: d58b29d5a3bd36555a4942024dea060f8ea1a515fc5c0493946e7958630fd62e
font_01_sfnt_off00007a39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A39 10912 bytes
SHA-256: 20a5e9584e8a42ca5fe16a9dbfa97a98ed59a9a7b44a740df342926822105b13

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