Malicious PDF — malware analysis report

Static analysis result for SHA-256 9793e9487d93e605…

MALICIOUS

PDF

44.0 KB Created: 2020-08-14 23:20:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5cf8cdaf0e1dd84dfd35221b635aa15f SHA-1: 15d7a790349b6ba76329508c4464487bc87964e3 SHA-256: 9793e9487d93e60558cc3966faa9e010a2c130e73c2228e260d75d89769bb555
194 Risk Score

Malware Insights

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

The PDF contains a link farm designed to direct users to malicious infrastructure, specifically identified by the critical PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The primary malicious URL is https://ttraff.com/wb?keyword=english%20grammar%20modal%20verbs%20rules%20pdf. While many other URLs point to benign Shopify domains, the presence of the redirector indicates a malicious intent to lure users to potentially harmful content. No scripts were extracted from this sample.

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/wb?keyword=english%20grammar%20modal%20verbs%20rules%20pdf In PDF document text
    • http://files.donnylambeth.com/uploads/1/3/1/3/131380251/bopulet-xatunus.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/1/0433/7860/6229/files/mobawevijetileduzogivapol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9156/6493/files/36128301874.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5435/7915/files/explain_biot_savart_law_and_its_applications.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2742/3654/files/50606694945.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1864/8732/files/2578404242.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1608/3877/files/kipubopatogetupove.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/1702/3138/files/lapamabixeziwosifibotafub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2409/7191/files/38924258286.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3315/7014/files/kotazijuzepubovi.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 2

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_off00006cd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CD5 5612 bytes
SHA-256: 1a310a8efe097d992b42e3e25f78e78dac4b2828f6c507d8ac6cc1c98c93c6e5
font_01_sfnt_off00007fc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FC0 10404 bytes
SHA-256: 24dab3b4e330a15aaf927ccef5c85fb1098ac007f30c4f45f82777873c1cf1cf

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