MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a large number of embedded links, many of which point to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though partially corrupted, contains text related to 'improper integrals worksheet with solutions' and a URL that matches the malicious redirector. This suggests the document is designed to exploit SEO link farming techniques to distribute malicious content, likely leading to a phishing or malware download site.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 5
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PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINKPDF 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.
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Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARMSmall 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.
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Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINKPDF 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.
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe 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.
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Embedded URL info EMBEDDED_URLOne 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.ru/pify?keyword=improper+integrals+worksheet+with+solutions In PDF document text
- http://files.saintwindowcleaningcornwall.co.uk/uploads/1/3/0/8/130874063/1691413.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/1/0432/3429/5966/files/namixajujiwekaw.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/2684/0738/files/naruto_shippuden_episode_279_english_dubbed.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32732230761.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/4756/7003/files/managerial_accounting_tools_for_business_decision_making.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/7810/4728/files/zokav.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/7661/6341/files/assistant_manager_interview_questions_and_answers.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/9496/6436/files/siguvifudow.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kekiwimuzavenomudajelibo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/6245/9544/files/58359932028.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/0090/3318/files/30319588553.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/1961/5901/files/makinet.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/1576/4128/files/zalorop.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8933/0325/files/13822504896.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00005224.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5224 | 5328 bytes |
SHA-256: 68fa761df335049513f09b4f13df4153110527e2171480102aa40d2364eb1d16 |
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font_01_sfnt_off00006423.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6423 | 12604 bytes |
SHA-256: d2c5bac6b5f56fc222201eefa2d169d832efeecf9a69b566ef3a16f7d09232f8 |
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font_02_sfnt_off00008c8d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8C8D | 16168 bytes |
SHA-256: d05f37f1530d5f93420ec1d1fef03be40ff404ab4da44f5daae16fd0829d120f |
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