MALICIOUS
202
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains a malicious redirector link, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. It also exhibits characteristics of a link farm, with numerous external PDF links, as indicated by PDF_SEO_LINK_FARM. The presence of a visual download button lure (SE_DOWNLOAD_BUTTON) further supports the malicious intent. The primary malicious IOC is the redirector URL, which likely leads to further stages of the attack.
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=bihar+police+syllabus+2020+pdf+in+english In PDF document text
- http://files.erinjreifler.com/uploads/1/3/1/4/131437532/4a734d43.pdfIn PDF document text
- http://files.kidstopinc.com/uploads/1/3/1/3/131398244/6571ec322d2.pdfIn PDF document text
- http://files.widenelementary.org/uploads/1/3/1/8/131871852/wumenanawusom.pdfIn PDF document text
- http://csbc.bih.nic.inIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://fedorahosted.org/lohitIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/1423/4017/files/gixezurutinajujofimexoluj.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/1470/1735/files/49377546924.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/9170/5500/files/21715406646.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/7145/4883/files/dekixenivabadomataxa.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/1312/8867/files/90189253062.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0509/1745/files/13287652620.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/6200/1825/files/19180570364.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/4115/3439/files/tajejizitil.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6427/0743/files/51231511719.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/2757/0596/files/lorojizekim.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/7318/3643/files/77330631678.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/6033/9623/files/34564446030.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/1463/5165/files/19547829850.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00009418.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9418 | 5784 bytes |
SHA-256: 4ecc41bca83c815c4ea31683b1dc69f2358ea0f91c4225d2e1cfec18d02da21f |
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font_01_sfnt_off0000a7b4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA7B4 | 10700 bytes |
SHA-256: bf87cb09c378d5f59d3c191e17f0daeaf1d0ee21618eb40a021f282072d3da7a |
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font_02_sfnt_off0000cc4d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCC4D | 7576 bytes |
SHA-256: 17fce6ac92c4119087aa2af3eb87f37a9b0919d468a6ff6edbcef410245dbf45 |
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