MALICIOUS
234
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
T1204.002 Malicious Link
The PDF contains multiple invisible links, one of which redirects to a known malicious infrastructure. The document body, though heavily obfuscated, contains text that appears to be a lure for 'Nasus build guide s9', likely to trick users into clicking the malicious links. The PDF also contains a mass external PDF link farm, suggesting an attempt to manipulate search engine results or distribute further malicious content.
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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Invisible PDF links to CAPTCHA-themed web lure high PDF_CAPTCHA_LINK_LUREPDF contains invisible clickable link annotations that point to a CAPTCHA/capcha-themed web path. This is a common phishing and ClickFix-style routing pattern: the PDF itself is inert, while the linked page performs the credential prompt or fake verification.
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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/wix?keyword=nasus+build+guide+s9 In PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://static.usrfiles.com/ugd/b8c837_60f941783ff54948925393a1e465d837.pdfIn PDF document text
- https://static.usrfiles.com/ugd/a2ebd8_3fea9bf45ffb45f7a4d7fa17ccf533ea.pdfIn PDF document text
- https://static.usrfiles.com/ugd/ce0e6d_799edaeb5ffe4347847670dec1b7d358.pdfIn PDF document text
- https://static.usrfiles.com/ugd/f90bad_4f189ed8ed0c4913b438ddf095fed768.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/1026/8064/files/zevaxu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/6072/3865/files/386_country_code.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/6644/2406/files/deronazajakupozapem.pdfIn PDF document text
- https://static.usrfiles.com/ugd/9374a7_ba911497c3414480a6a2d358f983759c.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b8c837_b5b202edd1044a25b199b1d41445b8c9.pdfIn PDF document text
- https://static.usrfiles.com/ugd/9e41f0_db14cfc495f149ed89484492ba20304d.pdfIn PDF document text
- https://static.usrfiles.com/ugd/d7ba0f_6bf7760c8ce0449e85b0a417618b0758.pdfIn PDF document text
- https://static.usrfiles.com/ugd/1849a1_193aaaa1d8ee4398b71c0cbdb69fd7af.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6577/8076/files/58156583057.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/6546/6270/files/breezing_form_captcha_no_image.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/3153/5524/files/tanesupikipig.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/3722/8188/files/xudokukimitisukifugimum.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/5370/3590/files/case_files_pediatrics_download.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_off00007c66.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7C66 | 5160 bytes |
SHA-256: 54af95192734425b11f659278077d467976b4e5b32f008d954f93780b698ce6a |
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font_01_sfnt_off00008e04.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8E04 | 15072 bytes |
SHA-256: 95a595a05dae50df7dd17639f07e9f8b86b3f2b97cf14c63b0c505a2fdf0b71b |
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