MALICIOUS
202
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains embedded links that redirect to a malicious domain, disguised as a search result for educational content. The ML classifier strongly indicates maliciousness, and the presence of a redirector URL confirms the intent to lead the user to a potentially harmful site. The document body, though heavily obfuscated, contains the same redirector URL, reinforcing the phishing lure.
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.link/wix?keyword=english+worksheet+for+class+5+cbse In 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/1/0432/0113/4747/files/49735618275.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/3882/5887/files/ibm_spss_amos_26_user_guide.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/9202/6271/files/aggression_and_violence_in_adolescence.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/7958/1352/files/ruwewolivixo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/9545/7946/files/voninelazo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/5692/2777/files/rujetosokirepivoguv.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/2654/4797/files/pdf_to_word_converter_software_download_filehippo.pdfIn PDF document text
- https://static.usrfiles.com/ugd/e1a791_26744c0b5ddb43a1aed288b048c37cde.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b8c837_ef0bdfac639a456da29e0718d0907d03.pdfIn PDF document text
- https://static.usrfiles.com/ugd/3c2e2e_f1f4ce09f4914454a1567ac2dbed1182.pdfIn PDF document text
- https://static.usrfiles.com/ugd/23e9be_b13ff0802dd64fb4b2d237502343faa5.pdfIn PDF document text
- https://static.usrfiles.com/ugd/3c9ac1_b87f751a5beb4d619dc2bd1268524340.pdfIn PDF document text
- https://static.usrfiles.com/ugd/e1d12c_e3471a74b2d84d5cbc05bd2954e14e84.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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00006bb8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6BB8 | 5520 bytes |
SHA-256: 9eda97cc0138de796e8d1c57765891421e7e8266f9fe94484b1bec7b8f826b95 |
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font_01_sfnt_off00007e8e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7E8E | 7144 bytes |
SHA-256: 20cc4dfd5dbbf3820330b72de64f2c176cc528799433e9762ab6806667b8c60b |
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font_02_sfnt_off000092aa.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x92AA | 10552 bytes |
SHA-256: 956dd3d765b9e7be56520734436143b5c5e26f7ea4d29f492cf3a59194812160 |
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font_03_sfnt_off0000b6df.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB6DF | 17492 bytes |
SHA-256: 459bc91fdd7ab87ea9ebc1797b1a3b948737d9d3234b6cc534cb86313abda916 |
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