Malicious PDF — malware analysis report

Static analysis result for SHA-256 97eb86a2862f17e5…

MALICIOUS

PDF

43.9 KB Created: 2020-07-29 18:52:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ccfdc0496611fbe9670e13cdfd406368 SHA-1: 69bcb841fe3102914aa90326a0259725514d8c92 SHA-256: 97eb86a2862f17e5684569674db664876826175413992deda2a42a3fc7e50369
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 external PDF files hosted on Shopify. One of these links redirects to a known malicious domain (ttraff.com), indicating a phishing or malware distribution attempt. The document body, though heavily obfuscated, suggests a lure related to 'Biology book class 10 pdf download'. The ML classifier strongly flagged this PDF as malicious.

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.com/pify?keyword=biology+book+class+10+pdf+download In PDF document text
    • http://files.lastwordsfortheroad.com/uploads/1/3/0/8/130874090/1598702.pdfIn PDF document text
    • http://files.lynngreerart.com/uploads/1/3/0/8/130873807/8bc6b3fd4a41b.pdfIn PDF document text
    • http://files.coxevolab.org/uploads/1/3/1/3/131380733/b435077a189.pdfIn PDF document text
    • http://files.newtonchineseschool-1.org/uploads/1/3/2/6/132682878/5051054.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/1/0430/7140/6234/files/52880513244.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9110/7752/files/zunotakub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3686/0839/files/41569033841.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8956/7650/files/visozurumaso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4929/5770/files/tilup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3240/4380/files/95428263344.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7732/8278/files/sugusom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lipowu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0201/1548/files/96406741692.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1673/3340/files/47341230210.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2848/7072/files/jakotukigovuna.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/9908973296.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_off00006c70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C70 5460 bytes
SHA-256: beca16b81c1f4ade379debde622512549beaae4c1cc4f67f4140266075822807
font_01_sfnt_off00007f17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F17 10756 bytes
SHA-256: 50585988420527cb21fc0b729d23c3d1c9329ca4e3d2fe7bc036d848b16f3a77

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