Malicious PDF — malware analysis report

Static analysis result for SHA-256 45327e2f28e7979a…

MALICIOUS

PDF

41.0 KB Created: 2020-08-15 02:00:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a3cacf19733238b1bee59594b0d09deb SHA-1: c768b0c6b5b8147924f80c6f1231d84ece5b6f82 SHA-256: 45327e2f28e7979a6d6011400c10e795606635abcefe2adc00db442528b075f0
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF document contains numerous embedded links, including one pointing to a known malicious redirector at `https://ttraff.cc/pify?keyword=independent+and+dependent+variables+worksheet+pdf`. The document body, though heavily obfuscated, appears to be an attempt to disguise the malicious links as an educational worksheet. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to redirect users to harmful 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=independent+and+dependent+variables+worksheet+pdf In PDF document text
    • http://files.nmwordprocessing.com/uploads/1/3/1/4/131453713/2764709.pdfIn PDF document text
    • http://files.lakechristianministries.org/uploads/1/3/0/8/130874646/703dfb.pdfIn PDF document text
    • http://topesejid.annettetammart.com/uploads/1/3/0/7/130775506/vipami.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/1/0437/6972/5080/files/voltage_divider_rule_and_current_divider_rule.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/6851/8563/files/united_states_abbreviations.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3945/7429/files/25034089196.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0662/3903/files/programa_bac_romana_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6820/9817/files/mafevox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7533/8389/files/teorias_e_abordagens_da_administrao.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/16175378270.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7405/9430/files/vuxoximejamusifasomawimew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6268/0984/files/87269895879.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9654/7230/files/75118112208.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_off00006032.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6032 5424 bytes
SHA-256: cad4ddfac569cb296c9ae8c596042a2b005933ffe6b7de8db847815f221a3a81
font_01_sfnt_off000072a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72A7 10836 bytes
SHA-256: eb1ad1358491811a9aedbdcc1d690d86b9234876d717ef1a48136cf19a6af0d7

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