MALICIOUS
202
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text related to 'free download' and the malicious URL itself. The primary attack pattern involves luring the user to click on a link that redirects to malicious infrastructure, likely for further payload delivery or phishing.
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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Urgency / deadline lure low SE_URGENCY_LUREDocument contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
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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=bcs+book+pdf+free+download In PDF document text
- http://files.uaphialphadelta.com/uploads/1/3/1/4/131437669/1874c5529.pdfIn PDF document text
- http://zozim.genecalculators.net/uploads/1/3/0/7/130775934/zovepajuputisapewo.pdfIn PDF document text
- http://biruzopim.racefkc.com/uploads/1/3/1/0/131070152/8285525.pdfIn PDF document text
- http://files.win19.org/uploads/1/3/0/8/130814296/7724866.pdfIn PDF document text
- http://files.uprisingstarsinc.org/uploads/1/3/0/8/130813992/jizodoz-paxuvi-nuworumokutor-dupezonov.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/1/0428/9835/8432/files/kepikopu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/8737/9097/files/jibiruwanarewize.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/2571/0750/files/kemonavofapar.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/2344/8736/files/9519106224.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/34515707504.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/7745/9363/files/75934125776.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/4008/0021/files/26790049617.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/2385/9873/files/kedemeresovoxozatavos.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/8102/3140/files/bank_loan_proposal_sample.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/6896/4505/files/canara_bank_credit_card_application_form_download.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6112/5025/files/tekuxizadosiwu.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_off000059fc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x59FC | 5492 bytes |
SHA-256: 6bbef02201b1dae3a5e46c99605ca304bb5e00bf767a4e6ab8abb68f8b1b9cf4 |
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font_01_sfnt_off00006cca.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6CCA | 12496 bytes |
SHA-256: 8d0ed243104b0de30a25e5242206b342da143588b269f8ecd25e618833f00c45 |
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font_02_sfnt_off00009322.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9322 | 9964 bytes |
SHA-256: c61e72d95c5ef31b5560985aece48c9e271eb673632b8612052f79a5830c1da8 |
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