Malicious PDF — malware analysis report

Static analysis result for SHA-256 c53b818effd11ee8…

MALICIOUS

PDF

38.0 KB Created: 2020-07-30 04:23:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 89ab3051490cabbe569837cbe27203a3 SHA-1: f80c91893d63b907eec299b02c6774e4fd10811e SHA-256: c53b818effd11ee81aff8d0b716ff509229ee6acf9a000fc884e356941d5cb59
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one heuristic specifically identifying a 'PDF_MALICIOUS_REDIRECTOR_LINK' pointing to 'ttraff.com'. Another heuristic, 'PDF_SEO_LINK_FARM', indicates a large number of external PDF links, suggesting a tactic to manipulate search engine results or distribute malicious content. The document body itself is heavily obfuscated and does not provide clear textual clues about its intent.

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=da%25C4%259Farc%25C4%25B1k+arap%25C3%25A7a+t%25C3%25BCrk%25C3%25A7e+s%25C3%25B6zl%25C3%25BCk+pdf In PDF document text
    • http://files.teaching-entrepreneurship.com/uploads/1/3/2/8/132815181/7138510.pdfIn PDF document text
    • http://files.norstarindustries.ca/uploads/1/3/2/7/132710565/6924308.pdfIn PDF document text
    • http://files.stellarcarevacations.com/uploads/1/3/2/7/132741109/5032976.pdfIn PDF document text
    • http://files.joel-nichols.com/uploads/1/3/1/3/131379844/8746961.pdfIn PDF document text
    • http://files.lindaozromano.com/uploads/1/3/1/4/131406811/8581719.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/1/0431/4939/4080/files/mivagavibafajuxaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7087/2995/files/88011235010.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9092/8026/files/24196923656.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4975/4519/files/83016437887.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4294/6728/files/wakiniwitanivaxosedojujuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1492/1114/files/53570118876.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wupukibasabozuxijixosi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1392/3228/files/74462240974.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8076/0990/files/4992909758.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4357/0343/files/67931993850.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6150/1336/files/suniguwi.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 8

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_off000054c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54C1 5488 bytes
SHA-256: 352025d0bb805c38886a87a630afad8f889ab0383673a0335a6c49316ca365d0
font_01_sfnt_off00006748.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6748 10468 bytes
SHA-256: 3559d9a873034bf1d1c36388075e28293ea5a8bccfef283baecb9b5b95cdc477

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