MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous links, many pointing to a redirector service identified as malicious. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. This suggests the document is designed to lead users to malicious infrastructure under the guise of providing free educational content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9999
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.ru/pify?keyword=free+chemistry+notes+form+2 In PDF document text
- http://files.nowakemusic.com/uploads/1/3/2/8/132815872/kazuwutomuluda.pdfIn PDF document text
- http://rugigok.newbostonphysicaltherapy.com/uploads/1/3/0/8/130814328/zibop_biwomodun.pdfIn PDF document text
- http://files.sailtrekker.com/uploads/1/3/1/3/131383330/aa983771b7.pdfIn PDF document text
- http://files.micksniseko.com/uploads/1/3/1/8/131857305/4e2d6.pdfIn PDF document text
- http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://cdn.shopify.com/s/files/1/0433/3440/2216/files/medical_dictionary_english_to_bengali.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/5308/0991/files/62171995120.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/1340/5850/files/bakitejewasuputodidimapa.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/7148/8668/files/byju_app_apk.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/1632/1184/files/76426100154.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/8863/2213/files/43734351066.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0459/5951/2223/files/adobe_acrobat_reader_2018_offline_installer.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/5172/9574/files/intermolecular_forces_activity_worksheet_answers.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0158/5562/files/dubiro.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/1172/6750/files/73652244009.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/3070/8375/files/15711240953.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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0001c2e6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1C2E6 | 1840 bytes |
SHA-256: 34364a445d9522c84accdc39b8191821094d3530574c342a5224b6cab1120916 |
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font_01_sfnt_off0001cb8b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1CB8B | 4856 bytes |
SHA-256: 88934e5d5cfd20423760b1c80f48b09919fcaf0eae8c6ebe25c5e4aa99179a16 |
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font_02_sfnt_off0001dbe8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1DBE8 | 13300 bytes |
SHA-256: 4d806788a8dce60508708e38f06891264a7736756fc6ce43f06ab8ca25b78148 |
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font_03_sfnt_off00020643.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x20643 | 4324 bytes |
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e |
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