MALICIOUS
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, 'https://ttraff.ru/pify?keyword=bsc+medical+microbiology+syllabus+pdf', is identified as a malicious redirector. The document body, though partially corrupted, contains text related to a syllabus and the redirector URL, suggesting a lure to a malicious site. The presence of numerous links indicates a potential SEO poisoning or link farm tactic to distribute malicious content.
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=bsc+medical+microbiology+syllabus+pdf In PDF document text
- http://files.conniesscreations.com/uploads/1/3/2/3/132303359/povabenena.pdfIn PDF document text
- http://files.woodlandharvest.org/uploads/1/3/1/4/131437878/5734400.pdfIn PDF document text
- http://wixeliw.readingsync.com/uploads/1/3/0/9/130969742/0e8446e69ac2.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/1/0436/3013/3406/files/55430775619.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/4537/0528/files/penaritogijifafeb.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/2060/5848/files/25207204523.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/9385/9231/files/tepepagadovelajeneru.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/7732/8278/files/nubinowikivokonejawixa.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/9961/1553/files/luvinikuzulaniwedib.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/7410/0127/files/sojamaganutakaxi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/7661/6346/files/tukibumurukenagugig.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/9046/0324/files/uric_acid_test_kit.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/7580/6119/files/89209525336.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/8265/9493/files/78349072216.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/9744/7836/files/nioh_trophy_guide.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/73930450062.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5725/8395/files/48734230951.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/3298/4222/files/58326629726.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_off00008c2b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8C2B | 5768 bytes |
SHA-256: f5bdedd1f09d3073f3bc47fcdbd07bd5527f5f05c85df6e1f1d2edabecf24bdb |
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font_01_sfnt_off00009fa9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9FA9 | 10312 bytes |
SHA-256: e5d6d55c285cd7f79d6543df8491718e5a3780918241d7028df2e9b23af13b36 |
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