MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
T1059.001 PowerShell
The PDF contains a large number of embedded links, many of which point to a link farm designed to redirect users. The primary redirector URL is associated with malicious activity. The document body, though heavily obfuscated, contains text related to 'BBC learning English PDF', suggesting a lure to trick users into clicking the malicious links. The ML classifier strongly indicates maliciousness.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 4
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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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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=bbc+learning+english+6+minutes+pdf
- http://files.kkstechtips.com/uploads/1/3/1/6/131637190/26ec8b48f71.pdf
- http://files.donandmargieabroard.com/uploads/1/3/1/0/131071076/f2b818fc74ed0.pdf
- http://files.thebyrdgallery.com/uploads/1/3/0/7/130740536/6a300b1bd14df.pdf
- http://files.lewinenterprises.net/uploads/1/3/0/8/130874086/1184696.pdf
- https://cdn.shopify.com/s/files/1/0434/3005/2005/files/11060527445.pdf
- https://cdn.shopify.com/s/files/1/0431/3799/0805/files/63488014649.pdf
- https://cdn.shopify.com/s/files/1/0431/6377/9240/files/lizemapawabamumed.pdf
- https://cdn.shopify.com/s/files/1/0429/1916/6119/files/vanoju.pdf
- https://cdn.shopify.com/s/files/1/0438/9945/3608/files/23181975134.pdf
- https://cdn.shopify.com/s/files/1/0431/8360/3876/files/wuvogamababobomeper.pdf
- https://cdn.shopify.com/s/files/1/0432/1440/5793/files/feginaviwis.pdf
- https://cdn.shopify.com/s/files/1/0432/7315/8821/files/10277756219.pdf
- https://cdn.shopify.com/s/files/1/0438/3234/4736/files/93955144587.pdf
- https://cdn.shopify.com/s/files/1/0431/7921/2959/files/89334295497.pdf
- https://cdn.shopify.com/s/files/1/0431/5650/4744/files/nirabubezozuguxulovorerov.pdf
- https://cdn.shopify.com/s/files/1/0431/6132/1634/files/subevolo.pdf
- https://cdn.shopify.com/s/files/1/0430/7661/6346/files/10130645490.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00007ecf.bin0cb3ad8cafed5abfe7850f9d48ee45d7ed9036d08318cadd9ca9d6c20c18fd49 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7ECF | 5684 bytes |
font_01_sfnt_off000091ea.binadac0e687b2511654064b87c549f89865df475256872dd7c256768ba9a633b63 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x91EA | 10096 bytes |
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