Malicious PDF — malware analysis report

Static analysis result for SHA-256 84ad818872167723…

MALICIOUS

PDF

46.2 KB Created: 2020-08-11 14:12:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f8fe9f5b90351c34582f4ef4a5d32a45 SHA-1: 1368c238e814161099d0250f7a8423dae99487ff SHA-256: 84ad8188721677231a4e11ace16caa89255b77a51e83cf235e49c3669cbec6f3
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, many of which are hosted on domains associated with SEO link farms and redirectors. The primary redirector URL, 'https://ttraff.cc/pify?keyword=multiplying+fractions+worksheets+pdf+4th+grade', is flagged as malicious. This suggests the document is designed to funnel users to malicious sites, likely for phishing or malware distribution, under the guise of providing educational content.

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=multiplying+fractions+worksheets+pdf+4th+grade In PDF document text
    • http://files.jwhitch.com/uploads/1/3/1/1/131163687/a81c6.pdfIn PDF document text
    • http://basojubaj.ulessor.com/uploads/1/3/2/6/132695306/0646a1.pdfIn PDF document text
    • http://files.artofextensions.com/uploads/1/3/2/8/132814980/voburadazavepep-gezisunilowu-sorodivomojiw.pdfIn PDF document text
    • http://files.goldcrestpolychem.com/uploads/1/3/2/6/132681556/nesiwidewo.pdfIn PDF document text
    • http://files.carlabaku.com/uploads/1/3/2/7/132740414/8688825.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/1/0436/7679/5030/files/90249006698.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/fomuxinobililazudi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2685/6601/files/calendario_serie_a1_basket.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9304/1053/files/63132492065.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6693/2902/files/5268325120.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9261/5073/files/74629181443.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7066/8453/files/20353140144.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/7867/4584/files/richard_bandler_the_ultimate_introduction_to_nlp.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0721/2694/files/84466380811.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2134/3647/files/greek_bible_dictionary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2670/8640/files/detailed_software_design_document_sample.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2232/6696/files/9822225628.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_off00007559.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7559 5768 bytes
SHA-256: 049e486c28800022eb8a71ca7ae4b7fd816ba1562789074cc799a923bbcba259
font_01_sfnt_off00008914.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8914 9952 bytes
SHA-256: 172aa4601f2acac97a2d77b64aa99a30fd1c6f82dc69e53246fa713838bd8e8e

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