Malicious PDF — malware analysis report

Static analysis result for SHA-256 00eef03c8120d8e6…

MALICIOUS

PDF

42.1 KB Created: 2020-08-05 01:11:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 871b546246b09fd97f9ffdafbae9dce7 SHA-1: 57e745ab17c86875a75eec36512db241e66558bf SHA-256: 00eef03c8120d8e66e27076fc7828cecce7defc4d1ced79344bfdf399f02701d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to a redirector service, which in turn points to a link farm of SEO-optimized PDFs. The primary redirector URL is https://ttraff.ru/pify?keyword=calculus+derivatives+examples+and+solutions+pdf, which is flagged as malicious. This suggests a phishing or scam campaign designed to drive traffic through malicious infrastructure.

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=calculus+derivatives+examples+and+solutions+pdf In PDF document text
    • http://files.usaboxingmetro.com/uploads/1/3/0/8/130874422/3689492.pdfIn PDF document text
    • http://wixiji.wildlifeinfo.ca/uploads/1/3/2/7/132741099/mexulu.pdfIn PDF document text
    • http://files.designsbycarolann.com/uploads/1/3/0/8/130814513/ac27058e6e8.pdfIn PDF document text
    • http://files.amandamariegatton.com/uploads/1/3/0/8/130813859/dufitexerasezukamozo.pdfIn PDF document text
    • http://files.shawtyreservices.com/uploads/1/3/1/4/131452938/9000144.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/1/0434/6934/0822/files/zumevubopowixoxopudikis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1791/8875/files/assessing_student_learning_outcomes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1103/7589/files/belajar_adobe_premiere_pro_cc_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3137/8590/files/totozovuwazux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4335/6825/files/52523304030.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1891/9837/files/ensayo_del_libro_aura.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2163/0631/files/sopefesewekazapikek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7960/5147/files/allis_chalmers_forklift.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4424/9499/files/vuputetoto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1315/2673/files/number_2_worksheets.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_off00005daf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DAF 5336 bytes
SHA-256: 5ffbb23853455266ba6a9b3b0ab227faa1a6c0c24b40615158e2f9567e7f6e2f
font_01_sfnt_off00006fbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FBF 13732 bytes
SHA-256: 67000b8f79ef4be2a364d954105265976dd204e157dc667f41d0cb84ec8824e2

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