Malicious PDF — malware analysis report

Static analysis result for SHA-256 2359fff163816beb…

MALICIOUS

PDF

41.0 KB Created: 2020-08-27 16:26:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 87de9e29b8737208acf06b4b6a7a21f4 SHA-1: cdfcfe8ea47b63a5fc410568d906e9c86e80cc19 SHA-256: 2359fff163816beb15b373955da09b2ebb579fbaae2d550b27dbbd7600e87482
234 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one heuristic specifically identifying it as a PDF SEO link farm. The primary malicious URL, https://ttraff.ru/pify?keyword=st+matthews+windham+nh, is flagged as a known malicious redirector. The document's purpose appears to be to distribute or manipulate search results through this extensive link farm, potentially leading users to malicious sites or unwanted content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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=st+matthews+windham+nh In PDF document text
    • http://dadogi.thebikery.co.nz/uploads/1/3/2/6/132696414/4208f2.pdfIn PDF document text
    • http://files.juneauflukes.org/uploads/1/3/0/7/130739892/pudefufoxe-tijute-vukugunimarog-nasoxonininovut.pdfIn PDF document text
    • http://files.ellendonaldson.com/uploads/1/3/1/4/131407767/d56cc.pdfIn PDF document text
    • http://dorojuv.megankijewskiseattleuniversitygraduateportfolio.com/uploads/1/3/0/7/130738836/keloripikeduxir.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/1/0432/9488/4000/files/grade_3_math_addition_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8306/2678/files/free_download_islamic_books_urdu_language.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3687/6706/files/kofadasokivefaru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6181/4172/files/carrion_game_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/5131/9202/files/kindle_app_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3020/0991/files/33358920245.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9802/9733/files/tufijonewum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0455/3677/2261/files/17646227722.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2330/8712/files/83582534209.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_off000063e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63E4 5132 bytes
SHA-256: da203e4032b423e1e37fae8fa9dcbf24233550cf4ffbb96d0532c115c9bfabb6
font_01_sfnt_off00007545.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7545 10060 bytes
SHA-256: 4db391a1833b26b31108518b0aa9465454f9f75d93fb2a02b715484085ca3817

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