MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file contains a large number of links, many pointing to a redirector service, suggesting a link farm or phishing lure for academic materials. The ML classifier strongly indicated maliciousness, and the PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms the use of known malicious infrastructure. While no scripts were explicitly extracted, the embedded URLs and the nature of the link farm indicate a likely attempt to redirect users to malicious content or phishing sites.
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.cc/pify?keyword=igcse+biology+past+papers+pdf+download In PDF document text
- http://ditej.fromtheheartliving.com/uploads/1/3/1/3/131383936/f904675b965e.pdfIn PDF document text
- http://files.polished-professionals.com/uploads/1/3/1/6/131607522/busefonag.pdfIn PDF document text
- http://files.forttryonviolinstudio.com/uploads/1/3/0/8/130813650/milozepisugo_mozisesufenit.pdfIn PDF document text
- http://rofirenu.sanowarfitness.com/uploads/1/3/1/8/131857445/zufiwexenujavusanax.pdfIn PDF document text
- http://panij.funnyjackmusic.com/uploads/1/3/0/7/130775432/1770561.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/1/0434/5554/5497/files/73475402797.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/6359/1583/files/square_root_python.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/2725/9811/files/92865862644.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/4523/1519/files/23634444930.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/4339/6506/files/89698172130.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/6222/3263/files/8436385163.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/6055/2085/files/49616496449.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0650/0769/files/personality_adjectives_exercises_elementary.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0451/2422/3141/files/business_email_etiquette.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/8220/3811/files/debunirodififovup.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/0419/9075/files/jovomubetadeju.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/visaboxe.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00005fcc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5FCC | 5596 bytes |
SHA-256: 8bb4d5cf2199829db9cec94c82ca5c91a329388db860051d9b4ae320707edcfe |
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font_01_sfnt_off000072e4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x72E4 | 1800 bytes |
SHA-256: a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620 |
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font_02_sfnt_off00007b71.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7B71 | 14204 bytes |
SHA-256: b23c8173368a211505efdba65f095d3a2a7b0431a505deec202336d1c211825e |
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