MALICIOUS
234
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
T1059.001 PowerShell
The PDF file contains a significant number of embedded links, with a critical heuristic firing indicating a malicious redirector. The primary malicious URL identified is https://ttraff.cc/pify?keyword=mathematical+modelling+notes+pdf, which is likely used to redirect users to malicious content. The presence of a 'LOLBin run command' heuristic suggests that the document may also contain instructions or embedded commands for executing scripts or binaries, further increasing the risk.
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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LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMANDExtracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
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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=mathematical+modelling+notes+pdf In PDF document text
- http://files.frhistory.com/uploads/1/3/0/7/130775242/203b3fdac6dc1c0.pdfIn PDF document text
- http://files.westhampsteadchristmasmarket.co.uk/uploads/1/3/2/3/132303118/dc4886dadfb812.pdfIn PDF document text
- http://files.martycoulter.com/uploads/1/3/1/4/131483098/802419.pdfIn PDF document text
- http://nitoduza.morehousechicago.com/uploads/1/3/0/7/130775436/moligutotemaretoguto.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/1/0435/3510/6203/files/26332849745.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/0877/6600/files/64978926416.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0450/5364/0856/files/wii_u_hacks_reddit.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/7860/6229/files/roxasake.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/3801/4616/files/lotilapegalej.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/4190/7110/files/sudemurejar.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/7741/0720/files/kivabuvegujebevan.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/6281/9990/files/7629308242.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/9150/1990/files/71012289626.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/4956/5853/files/tn_commercial_drivers_license_manual.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/3455/9143/files/cmd_commands_windows_7_hacks.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9282/0643/files/monitor_audio_bxw10.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/6051/7271/files/revised_standard_version_catholic_bible.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
- https://cdn.shopify.com/s/fIn macro / runtime command snippet
- 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_off00006b4d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6B4D | 5480 bytes |
SHA-256: b5b41217afd42dfa37fd749fd5959e53ba3f829c6bc314e7a20e6cb017d5d6f8 |
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font_01_sfnt_off00007de1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7DE1 | 10240 bytes |
SHA-256: 25f2ca459375f74d8e59aecd0603b85c91e54cf22b1ba2e4a5160f6b0601e75d |
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