Malicious PDF — malware analysis report

Static analysis result for SHA-256 4334765a305181ae…

MALICIOUS

PDF

56.3 KB Created: 2020-08-04 21:24:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 60f515ffb681fa498cacff4edd4218da SHA-1: ebbac5df41abc6a15dbd87fc71eba195bf078221 SHA-256: 4334765a305181ae112a41f1abc92c04f5f9444ee66be5bc7ed33e1c0add8a21
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic firing indicates a malicious redirector link to 'https://ttraff.cc/pify?keyword=algebra+math+pdf'. This suggests the document is designed to redirect users to malicious content through a series of links, masquerading as an algebra math PDF.

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=algebra+math+pdf In PDF document text
    • http://files.mermaidinforeignwaters.com/uploads/1/3/2/8/132814071/kizal.pdfIn PDF document text
    • http://files.torontoflowergallery.com/uploads/1/3/1/4/131453555/8625456.pdfIn PDF document text
    • http://files.drdavidmurphy.ca/uploads/1/3/2/3/132302859/japodafajigawode.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/1/0431/8471/7979/files/55137020069.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0802/4985/files/82612785841.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4537/0521/files/depifawitixaxefoda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5803/6889/files/89625430907.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9731/7783/files/ribugugarasuvitutaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2149/2643/files/risukunovexefubiru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6175/4518/files/pwc_financial_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7159/4911/files/ti-_30xs_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5339/1765/files/xepoxaful.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5374/4279/files/vojaxesak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7099/7151/files/nuxejimepuke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5735/6710/files/partnership_capital_account_format.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/taselalodomojobuda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4693/5445/files/62046197432.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_off00009456.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9456 5408 bytes
SHA-256: 17fd45b175514d3b7edf2b8ada686e5e2e20db723442f72c244162e0bbf6641c
font_01_sfnt_off0000a68c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA68C 14268 bytes
SHA-256: fe9070329e7f168f1a2537e5db46ef58f49adc2074235966c6413addcc799b7d

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