Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b54153cac03a6e7…

MALICIOUS

PDF

41.4 KB Created: 2020-08-23 10:43:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 029687bcf478430252342881722b6bc2 SHA-1: 4600523137db027ebe94822538060684222a2ea1 SHA-256: 7b54153cac03a6e775d4cc9cac3c18465a2f603e726cfda325c3a01a749a6529
194 Risk Score

Malware Insights

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

This PDF document contains a link farm designed to redirect users to malicious infrastructure, specifically identified as a redirector at 'https://ttraff.ru/pify?keyword=estimation+math+worksheets'. The document body, though heavily obfuscated, contains this URL and numerous other links to PDF files hosted on Shopify, likely as a SEO-based lure. The primary malicious intent appears to be directing users to potentially harmful websites under the guise of 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.ru/pify?keyword=estimation+math+worksheets In PDF document text
    • http://files.samanthakreuscher.com/uploads/1/3/1/1/131164573/pitozapejazopidodo.pdfIn PDF document text
    • http://files.platinumgraphics.org/uploads/1/3/1/4/131438471/3211807.pdfIn PDF document text
    • http://files.karilerum.com/uploads/1/3/1/3/131379948/772f5ab7c672e.pdfIn PDF document text
    • http://files.executived-daytours.com/uploads/1/3/1/4/131407494/c1652ffc0097a9.pdfIn PDF document text
    • http://files.lakes-electric.com/uploads/1/3/1/4/131455903/23ecfbf979820f.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/1/0431/0066/8065/files/zoreworuxanil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/3364/5476/files/factoring_polynomials_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2762/6134/files/14173799533.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5049/9222/files/terijolon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/8458/2813/files/blessed_sacrament_prayer_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0378/1015/files/59688267009.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5636/4709/files/luminous_silk_shade_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8658/5759/files/21715647232.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2296/7207/files/rafeterusadelege.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 6

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_off0000647d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x647D 5004 bytes
SHA-256: a1a8df6b48b3811d3bd2dbca76ee0033f84f3b8a684c833d0398d32ca8338962
font_01_sfnt_off00007561.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7561 10456 bytes
SHA-256: 6946b5ec36e1ed9dc4150dd2b2ef3809aa74357e7f8e0e4cf6dabe325ff551a3

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