MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
T1204.002 Malicious Link
The PDF contains a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text referencing "cissp exam questions 2020 pdf" and the malicious URL, suggesting a lure. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, many hosted on cdn.shopify.com, which are likely part of a link farm to improve search engine ranking for malicious content. The ML_NYX_PDF_MALICIOUS classifier strongly supports the malicious verdict.
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.com/pify?keyword=cissp+exam+questions+2020+pdf In PDF document text
- http://files.carlapasqualini.com/uploads/1/3/2/3/132302923/e493ba1df856.pdfIn PDF document text
- http://files.kawarthatruthandreconciliation.ca/uploads/1/3/0/9/130970009/niwipadekotomigufabu.pdfIn PDF document text
- http://files.gstrackers.org/uploads/1/3/0/7/130740264/gaminepugusifola.pdfIn PDF document text
- http://files.changingleaf.ca/uploads/1/3/2/6/132695438/pixozomibubab.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/1/0450/5364/0856/files/j_cole_breakdown.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8828/9694/files/54609456376.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/9766/1348/files/remove_annotations_from.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/0659/1127/files/bolt_connection_design_example.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8028/6372/files/43903805061.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/3882/5887/files/7434521539.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/8542/2997/files/wojurexu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/3801/4616/files/pilegizonesemesefopopilu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/8807/7209/files/46811513945.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8186/7176/files/5992390233.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/3260/0985/files/zovutuzere.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/7242/9980/files/19750210097.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
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00006e6c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6E6C | 5432 bytes |
SHA-256: 535f039839f75dbcac2cf5fc9f8591483b03b06329126d571f0f4424e4b1b4f4 |
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font_01_sfnt_off000080de.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x80DE | 10180 bytes |
SHA-256: 9bb88f7a600a2eaa76f64711eeab9a4b9c220791e848f0f79e3781dda6f85bb7 |
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