MALICIOUS
234
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains a large number of embedded links to other PDF documents, a technique often used for SEO poisoning or to host malicious content. One of the extracted URLs, 'https://ttraff.cc/pify?keyword=bus+interface+unit+of+8086+microprocessor+pdf', is identified as a malicious redirector. The document body itself is heavily obfuscated and contains references to the malicious URL and other benign-looking PDF links, suggesting a lure to download further malicious content or to engage in a phishing scheme.
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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PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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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=bus+interface+unit+of+8086+microprocessor+pdf In PDF document text
- http://files.mastercreatorsadventureretreat.com/uploads/1/3/1/4/131452733/nonalesem.pdfIn PDF document text
- http://files.unclerhetts.com/uploads/1/3/0/8/130814855/sanebegu-wexibasukokuk-tujabovaleki-tosekavironiti.pdfIn PDF document text
- http://files.zpchurch.org/uploads/1/3/1/4/131407469/kudefinugipozo-sebono-nurexipevo-vopudim.pdfIn PDF document text
- http://files.dawnfeeneyjewellery.co.uk/uploads/1/3/0/7/130738739/jotapovebub_zuxilinisaj.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/1/0430/5167/9898/files/fe_mechanical_review_manual.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/2376/0536/files/35232962104.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/9983/1966/files/automobile_engineering_syllabus_regulation_2020.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/3015/1330/files/management_of_penetrating_abdominal_trauma.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/4188/2265/files/43628335891.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/9254/8515/files/loruju.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/7372/3800/files/wibavegef.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/3653/2136/files/xavimite.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/1079/3382/files/xakazabizofiweresapomesu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/8430/0959/files/lista_giocatori_fantacalcio_2020_20_fantagazzetta.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/1501/2511/files/pekaduvamaja.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 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00006be5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6BE5 | 5808 bytes |
SHA-256: 0646fe9359f751afec4a3732a4656f1ac46d8c39997f9d8e0dd28677d65262fc |
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font_01_sfnt_off00007f86.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7F86 | 10240 bytes |
SHA-256: f01314bbafc0e4263d0ced1702d5b1674556526627ebb97d6fe312e51f209a49 |
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