MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
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 obfuscated, contains text suggesting it is an 'answer key' to lure users into clicking the malicious link. The PDF_SEO_LINK_FARM heuristic also indicates a large number of external links, many of which are likely part of a link farm designed to improve search engine ranking for 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.cc/pify?keyword=ncdrc+answer+key+2019+mts In PDF document text
- http://files.coachscottschemistry.com/uploads/1/3/1/6/131606257/tifuwujujal.pdfIn PDF document text
- http://files.tiffanygilly.com/uploads/1/3/0/8/130874360/ec80f9d.pdfIn PDF document text
- http://dudomuro.waringbank.com/uploads/1/3/1/4/131482976/jujur.pdfIn PDF document text
- http://xalikug.tammingapaton.com/uploads/1/3/1/3/131383648/f8b1b6cf.pdfIn PDF document text
- http://sakix.thestockmansbreakfast.com/uploads/1/3/2/7/132712207/2471109.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/12086745869.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/0849/1673/files/bebogutaz.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/1343/0686/files/pemuxokaj.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/0904/7708/files/wiwawisoporojamenalivata.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/7663/2214/files/bugafetugoja.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/8243/2160/files/company_profile_free.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/1961/4884/files/sawinifedilakuzigujuwuto.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/4490/5884/files/alcatel_pop_4_plus_manual.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/9249/9877/files/98727195068.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/6199/1841/files/808900304.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/8207/2732/files/9286007191.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/5567/5552/files/62787767612.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_off00005c50.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5C50 | 5392 bytes |
SHA-256: dc682c539ebe61fb35395cda99b8602c683560b4ad59e14f7db06c29e50aab7f |
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font_01_sfnt_off00006e9f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6E9F | 9872 bytes |
SHA-256: 9d296e18a8d126b38c79112bb0f680190f3033488c4056a758ec91ac570ab60e |
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font_02_sfnt_off00009069.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9069 | 4324 bytes |
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3 |
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