MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous links to external resources, masquerading as a grammar book, which is a common lure for phishing or malware distribution. The primary redirector link, https://ttraff.cc/pify?keyword=the+grammar+book+3rd+edition, is flagged as malicious. The ML classifier also strongly indicated maliciousness, supporting the conclusion that this document is designed to lead users to harmful sites.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
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.cc/pify?keyword=the+grammar+book+3rd+edition In PDF document text
- http://files.projectsforwildlife.com/uploads/1/3/1/8/131857315/kanabekox.pdfIn PDF document text
- http://files.susanwardbooks.com/uploads/1/3/0/8/130814535/f5eb4a020e5c0c.pdfIn PDF document text
- http://files.dotasata.com/uploads/1/3/2/6/132696155/4915173.pdfIn 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/1/0427/9726/9159/files/hida_brownian_motion.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6377/9236/files/puxedipetu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/7133/2767/files/adjective_clause_grammar.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/2334/2495/files/timokomexow.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0463/2595/6765/files/miracles_performed_by_benson_idahosa.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/0597/5462/files/eureka_quest_guide.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/4107/1016/files/aurumscience_switch_answer_key.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/4636/1505/files/botulismo_2020.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/7152/7330/files/computer_system_architecture_in_os.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0073/3596/files/jeletelodonu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/1453/5843/files/learning_english_grammar_book.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/7159/4911/files/lotadimudelorokovurixam.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/2264/5408/files/1784966786.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/5289/1297/files/school_application_letter_format.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_off00005191.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5191 | 5132 bytes |
SHA-256: 7ff5ab32f0d0ab24528cbf6f2124ee79203b27dbc499fccee5b171a5f1fc4adc |
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font_01_sfnt_off000062da.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x62DA | 9688 bytes |
SHA-256: 7c9058be272faf050db7dbb747cf9e283c98488237614348f39e84349ee542b9 |
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font_02_sfnt_off000083e2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x83E2 | 4324 bytes |
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3 |
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