MALICIOUS
202
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
T1203 Exploitation for Client Execution
The PDF contains multiple heuristics indicating malicious redirector links and a link farm designed for SEO manipulation. The primary malicious URL, https://ttraff.com/pify?keyword=assertions+in+systemverilog+pdf, is identified as a redirector. The document body, though heavily obfuscated, contains this URL, suggesting it's intended to lure users into clicking it. The ML classifier also strongly flagged this PDF as malicious.
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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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.com/pify?keyword=assertions+in+systemverilog+pdf In PDF document text
- http://sotide.designsbykneeknee.com/uploads/1/3/1/3/131383314/821f9141b09.pdfIn PDF document text
- http://pagubef.flexgridapp.net/uploads/1/3/1/6/131637224/4044611.pdfIn PDF document text
- http://files.toymigos.com/uploads/1/3/1/8/131856381/61b8c1a.pdfIn PDF document text
- http://files.starwheelprinters.org/uploads/1/3/1/3/131384214/3830577.pdfIn PDF document text
- http://muxiwiju.reardenrealestate.com/uploads/1/3/2/3/132303382/siwimem-ruwirerinog.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/1/0430/3034/7938/files/99106142253.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/5717/6986/files/42652279033.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/1960/6936/files/xepuzeg.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/4392/9757/files/afforestation_and_deforestation.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/3652/2149/files/botomub.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/2756/0610/files/crossbow_by_weider.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8526/7097/files/34467542454.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/4419/8805/files/49585433362.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/6470/4662/files/25988121970.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/4361/7948/files/github_pages_hosting.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/7541/9798/files/english_definite_and_indefinite_articles_exercises.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00007af8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7AF8 | 5304 bytes |
SHA-256: 06f61949e69b682fb1d4502ce6e916c356168ecf3bf20be46b34beab5c374cf3 |
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font_01_sfnt_off00008cfc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8CFC | 15892 bytes |
SHA-256: a2050a0886667efd40ed1f1ba49ba6828d79569f9a13d0bf7db957eef4703ace |
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font_02_sfnt_off0000bef3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBEF3 | 16120 bytes |
SHA-256: 2a726e4d8e078a4a4a6a0bed67b139344cab8167eb027720faf42c08020076b2 |
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