MALICIOUS
202
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains embedded links, one of which, 'https://ttraff.ru/pify?keyword=bu+admission+circular+2020+19+pdf+download', is flagged as a malicious redirector. The document body text, though garbled, contains keywords related to 'admission circular' and the malicious URL, suggesting a lure to trick the user into clicking the link. The PDF also hosts a large number of other links, many pointing to Shopify, which is indicative of a link farm used for SEO poisoning or distributing 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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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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Fake invoice / payment lure low SE_INVOICE_LUREDocument contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
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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=bu+admission+circular+2020+19+pdf+download In PDF document text
- http://files.yorkshirephysioandwellbeing.com/uploads/1/3/1/4/131453256/gatalap.pdfIn PDF document text
- http://files.centralfoodnetwork.org/uploads/1/3/1/3/131383318/bunuzozagu.pdfIn PDF document text
- http://files.eaposters.com/uploads/1/3/1/3/131398360/f92a52f.pdfIn PDF document text
- http://files.cloudcatchermedia.com/uploads/1/3/0/9/130969967/6761791.pdfIn PDF document text
- http://files.plannedaspects.com/uploads/1/3/0/7/130739043/lipajizibulogo.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/1/0432/2652/9956/files/business_english_test_with_answers.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/9386/1279/files/41379477461.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/5755/9190/files/78686047005.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/7106/8577/files/24529926408.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/7196/2269/files/fisica_capacitores_exercicios_resolvidos.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/4376/3862/files/intermediate_financial_management_brigham.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0452/2465/7056/files/benicar_hct_bula.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9763/7535/files/21436853090.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/4964/7254/files/72548924667.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/6405/6225/files/acr_bi_rads_atlas.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://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
- http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00007485.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7485 | 5924 bytes |
SHA-256: 0593a3f49ec057b504a3ff14daf3d27190c141c0ded9c176233ba1de28fae97e |
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font_01_sfnt_off000088a9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x88A9 | 9264 bytes |
SHA-256: 2281f599591ebc39e86d1914607de7998bcb5e5a4a91dd0b1cbe46f698889d9b |
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font_02_sfnt_off0000a698.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA698 | 13516 bytes |
SHA-256: 2cd6ba2c348bdb667c500e05c5eb3008195a68a5a7f124314424b8e9349a3aa3 |
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