MALICIOUS
234
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a large number of embedded links, with one identified as a malicious redirector. The ML classifier also flagged this PDF with high confidence. The document body contains garbled text but also includes the malicious redirector URL and several benign-looking PDF links, suggesting a link farm designed to obscure malicious intent. The primary attack pattern involves redirecting users to malicious infrastructure.
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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PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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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=bossa+nova+musicas In PDF document text
- http://files.caleotravel.com/uploads/1/3/0/8/130814232/1156775.pdfIn PDF document text
- http://files.lafayetteorchestra.org/uploads/1/3/0/7/130775063/3775681.pdfIn PDF document text
- http://files.tenderlovingcarechildcarecenters.com/uploads/1/3/2/6/132682441/4308088.pdfIn PDF document text
- http://files.cleanoceanfoundation.com/uploads/1/3/1/0/131071243/23e321f.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/1/0432/2109/0471/files/axial_flow_compressor_noise_studies.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/5561/2058/files/oxford_bookworms_library_stage_1_titanic.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5555/4470/files/cardiogenic_shock_review.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/9690/7678/files/mac_install_python3.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/5095/1066/files/dasorajarudubalenuzefipi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/2931/5239/files/99025578519.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/0273/9363/files/fishbone_diagram_template_powerpoint_blank.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/2643/9582/files/79490203184.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5856/9128/files/parliamentary_procedure_worksheet_activity_1._02._02.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/1617/5263/files/86666335240.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_off0000645b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x645B | 4924 bytes |
SHA-256: d4cad99c8a41f51ea95f4414e5e681d3da0c0881e37f22a78c5d7cec450aa077 |
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font_01_sfnt_off0000750f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x750F | 10588 bytes |
SHA-256: 2a0d0b4c1a05d20d5eefae4f320e63583629c8307c4f12d41742daf099ad3ad8 |
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