MALICIOUS
214
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF document contains a lure for a "Nrf bursary application form" which, upon inspection, links to a redirector URL. This redirector is associated with known malicious infrastructure and a link farm, indicating a phishing or scam attempt. The ML classifier strongly flagged this PDF as malicious, and the presence of embedded URLs further supports a malicious intent to redirect users to potentially harmful content.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 6
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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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Callback phishing phone lure medium SE_CALLBACK_LUREDocument asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
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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=nrf+bursary+application+form In PDF document text
- http://files.caledonjewels.com/uploads/1/3/1/3/131380258/593932.pdfIn PDF document text
- http://files.barefoottraveler.com/uploads/1/3/0/8/130814926/fagup_wigika.pdfIn PDF document text
- http://files.matchedbettingsite.com/uploads/1/3/1/4/131452988/zudikesobeb-faboxuja.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/1/0434/3303/3880/files/37053888156.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8488/1825/files/81590985146.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/2990/5058/files/discrete-_time_signal_processing_third_edition.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/5086/9671/files/benzoilmetronidazol_40mg_ml_bula.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/3671/2861/files/sumixesaf.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/2050/7544/files/business_intelligence_o_que.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/9127/0563/files/b_com_syllabus_1st_year_2020_17.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/1083/4077/files/physics_walker_4th_edition_solutions_manual.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/3508/1374/files/anaxagoras_philosophy.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/9964/4314/files/defalokatasegomifixiz.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/0692/5720/files/brighthouse_tv_guide_app.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_off00006a78.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6A78 | 5372 bytes |
SHA-256: de97e54cb647ea2a21d09fb2f41caeb649da9b099762c036d78ef959cadca46b |
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font_01_sfnt_off00007cab.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7CAB | 10608 bytes |
SHA-256: 2dd2e18df14a15471f8beaf776cd9c27a71f93f6d9a7e2277a567de5a240a338 |
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