Malicious PDF — malware analysis report

Static analysis result for SHA-256 18465ec8f0a29e7a…

MALICIOUS

PDF

41.4 KB Created: 2020-08-06 16:50:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b2291fcff94094b56e25e21f0f0b44a7 SHA-1: c849f6cc2b08738927428999e86b20e7e598c844 SHA-256: 18465ec8f0a29e7af04c36b0bf32546221bb917e28d0127963e418b41632b770
194 Risk Score

Malware Insights

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

This PDF document contains numerous links designed to appear as educational resources, but they ultimately redirect to malicious infrastructure. The primary redirector URL is https://ttraff.cc/pify?keyword=up+board+maths+books+for+class+8+pdf, which is flagged as malicious. The document structure and embedded links suggest a phishing or scam attempt to lure users to malicious sites under the guise of providing free books.

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=up+board+maths+books+for+class+8+pdf In PDF document text
    • http://files.jasmineye.com/uploads/1/3/1/1/131163601/64b314.pdfIn PDF document text
    • http://files.ianglidden.com/uploads/1/3/2/6/132681954/6893283.pdfIn PDF document text
    • http://jemavi.fanatixwrestlingfederation.com/uploads/1/3/1/1/131163635/nutemebut-lelegaruni.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/1/0431/5938/8316/files/ace_academy_books_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1987/8048/files/execute_disable_bit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9062/5191/files/84497832247.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8946/1410/files/pugiwaxarosirotapanozoka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37144816260.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3652/2149/files/gurifatezavirogufolusi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6705/6028/files/assure_model_lesson_plan_mathematics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5689/7947/files/54605991820.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3328/8088/files/88426159492.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7347/8560/files/vizivekuzibexibatudose.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 5

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_off00006219.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6219 5784 bytes
SHA-256: b3e1d30bf212c410722091bd56a9ce50300749c89cbe3d474bfa02d8e49cbddc
font_01_sfnt_off0000759f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x759F 10296 bytes
SHA-256: 9d9f47245b4704f217d70c1320815081859ab2a891c03d471bc2d3b93b21e771

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