MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains a large number of embedded links, a common tactic for SEO link farms, with the primary link directing to a known malicious redirector. The document body, though heavily obfuscated, appears to be related to 'Fpga xilinx tutorial pdf', suggesting a lure to attract users interested in technical content. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms the presence of a link to malicious infrastructure.
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/wb?keyword=fpga%20xilinx%20tutorial%20pdf In PDF document text
- http://files.radiorodney.com/uploads/1/3/0/8/130874298/3217108.pdfIn PDF document text
- http://files.mymoonmalas.com/uploads/1/3/2/6/132681316/f8954ce2662.pdfIn PDF document text
- http://files.smalltalktherapy.co.nz/uploads/1/3/0/9/130969693/senipu.pdfIn PDF document text
- http://files.hannahleatherbury.com/uploads/1/3/0/8/130873791/cc7d5.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/1/0432/7027/5237/files/dapoziwomaxiwajojegela.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/19189676900.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/1110/5183/files/75517793685.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5955/2155/files/895492321.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bekikelazipilexujewa.pdfIn PDF document text
- https://xikivogazud.files.wordpress.com/2020/07/1414062284.pdfIn PDF document text
- https://xutifik.files.wordpress.com/2020/07/43800895628.pdfIn PDF document text
- https://volapuzigu.files.wordpress.com/2020/06/70047247504.pdfIn PDF document text
- https://fuwaloked.files.wordpress.com/2020/07/36420763711.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/7719/8229/files/fotelibopujazasifamewe.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/85583151980.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xaxigeruver.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/8249/0791/files/wunufefozovobisevulam.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/4066/0891/files/93305864015.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/2770/1655/files/migekepasut.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/41732402988.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_off000072ed.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x72ED | 4820 bytes |
SHA-256: bae5b7fb2e63fe78a8684ee35f7d70d5041b99166173da5a25aecbe0786610bf |
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font_01_sfnt_off00008356.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8356 | 9900 bytes |
SHA-256: 7b47c795495df33e379d7491c884ccbee332d130c926aae90f45008c80600efb |
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