MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
T1204.002 Malicious Link
The PDF contains a malicious redirector link that is presented to the user as a 'Bsc maths question paper 2016 pdf'. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms that the target URL is associated with malicious redirector infrastructure. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, many hosted on cdn.shopify.com, suggesting a link farm for SEO manipulation or to obscure the final malicious destination. No scripts were extracted from this sample.
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+maths+question+paper+2016+pdf In PDF document text
- http://kuwimorew.teacherdallas.com/uploads/1/3/1/8/131871864/9904502.pdfIn PDF document text
- http://files.longbeachrental.ca/uploads/1/3/0/7/130775373/3989e0570268.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/1/0429/1356/2787/files/83305743657.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/3609/0274/files/57199702490.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/1940/2405/files/98676032535.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/7750/0056/files/85767733798.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8514/3965/files/98748879274.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/6766/0706/files/tufolabosuwegorasawuro.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/5287/4390/files/57289626171.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/6137/9226/files/88146711458.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/6832/4005/files/17582571013.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/6808/7711/files/suvajasilurabenilin.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/1926/2357/files/valekoge.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/6542/5563/files/46166450083.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/6737/4758/files/89116931620.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00012760.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12760 | 6020 bytes |
SHA-256: ff146fea7dd50e06388b3644fe7eeaa957d8ca2c138554b78ebb628c07bde597 |
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font_01_sfnt_off00013bab.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13BAB | 16172 bytes |
SHA-256: ae8a78bb6da86fcf72415db928431c8e567d4086360e661db05cbdb7db43b0e1 |
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font_02_sfnt_off00016d17.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x16D17 | 16384 bytes |
SHA-256: 924dda24734411d6a1d3e468414165a92c1cc0651fb600c633b04ceacb0dd579 |
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