Malicious PDF — malware analysis report

Static analysis result for SHA-256 eabfde037ac3db1d…

MALICIOUS

PDF

43.2 KB Created: 2020-08-06 18:38:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e8d23394f0b89b1d6248d0eceb86af49 SHA-1: 6479646fa45c039ac78c7e25629343a219e3d8c9 SHA-256: eabfde037ac3db1d32313d048097211d5a28e43e6b16d6fe14cf90368739c15f
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is part of a link farm designed to lure users with fake download opportunities. The document body, though heavily obfuscated, contains text related to PDF downloads and the malicious URL itself. The ML classifier strongly indicates maliciousness, and the PDF_SEO_LINK_FARM heuristic confirms the presence of numerous external links, likely for SEO manipulation and traffic generation to malicious sites.

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=search+engines+information+retrieval+in+practice+pdf+free+download In PDF document text
    • http://files.yulupacoho.com/uploads/1/3/1/4/131452922/8111913.pdfIn PDF document text
    • http://pabutes.southcarolinablackpride.com/uploads/1/3/1/4/131407469/caaec0f2b1ba987.pdfIn PDF document text
    • http://files.evofitsuitsbyb.com/uploads/1/3/2/3/132302855/5826467.pdfIn PDF document text
    • http://files.jillwongphotography.com/uploads/1/3/0/9/130969695/1db84d8f4.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/1/0435/9690/6659/files/alkyd_resin_synthesis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9434/3841/files/rumitabatiwazoxot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0234/6148/files/tunefupolojus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8617/5651/files/66738294087.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4421/6727/files/85308294870.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7607/6188/files/86212135699.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1059/6765/files/89493652517.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3353/4357/files/what_is_righteousness_according_to_the_bible.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1907/5737/files/osrs_jad_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7650/2175/files/40882577054.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6287/8618/files/41355304999.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_off000064e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64E1 5824 bytes
SHA-256: e4ea1208a62f0e83c55ebecb6d59f7e12c9e8d3c0f1f39dceb1c5a8a23a2e43b
font_01_sfnt_off000078a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78A2 11376 bytes
SHA-256: 260a5cea58a2cd2f7138b79bb521582dce8a6e1816242d3bef55bbbddbe985bf

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