MALICIOUS
184
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF document contains a large number of embedded links, many of which point to a link farm designed for SEO manipulation. One prominent link, 'https://ttraff.cc/wb?keyword=candid%20icse%20biology%20class%209%20textbook%20pdf', redirects to further malicious infrastructure. The document body, though garbled, contains keywords related to textbooks, suggesting a lure to trick users into clicking the malicious links. No scripts were extracted, but the PDF structure and link farm indicate a delivery mechanism for potentially harmful content.
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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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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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/wb?keyword=candid%20icse%20biology%20class%209%20textbook%20pdf In PDF document text
- http://files.pyramidodi.com/uploads/1/3/1/6/131636746/8673200.pdfIn PDF document text
- http://files.circlepulse.com/uploads/1/3/0/7/130776698/186f604de23.pdfIn PDF document text
- http://files.thesolidrockshop.com/uploads/1/3/0/8/130813797/zaxisufibuxuxigusi.pdfIn PDF document text
- http://files.simplicitylavenderfarm.com/uploads/1/3/1/6/131606947/d252adc39044f49.pdfIn PDF document text
- http://files.plainbird.org/uploads/1/3/1/3/131380158/pufiw.pdfIn PDF document text
- http://files.connoisseurstours.com/uploads/1/3/1/8/131857071/abaa266e7dc9a.pdfIn PDF document text
- http://files.rashadsherman.com/uploads/1/3/0/7/130775983/kurasetod-gibigalab-mopufeme-jalukusav.pdfIn PDF document text
- http://files.bankersumbrella.com/uploads/1/3/1/4/131453252/e66e2d.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://fedorahosted.org/lohitIn PDF document text
- https://simovojeb629202265.files.wordpress.com/2020/06/sikazuxopumevu.pdfIn PDF document text
- https://jekaxiwu.files.wordpress.com/2020/07/navuxepux.pdfIn PDF document text
- https://gupasuva.files.wordpress.com/2020/07/bekokolamin.pdfIn PDF document text
- https://finizagadi.files.wordpress.com/2020/07/bolob.pdfIn PDF document text
- https://zafujuzokud.files.wordpress.com/2020/06/fivipetekaliwelip.pdfIn PDF document text
- https://fugebetowipo.files.wordpress.com/2020/07/55881960265.pdfIn PDF document text
- https://nenidogava.files.wordpress.com/2020/07/52852316605.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32177526878.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/voxetevew.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/45927795399.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/98629167596.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xuvekalododit.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/43545787384.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_off00007afd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7AFD | 5568 bytes |
SHA-256: 2ef90d7084dbf46f67eafbf9c4b5d78d370491d73e649fb38b4ba3334efc2d8c |
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font_01_sfnt_off00008e07.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8E07 | 10532 bytes |
SHA-256: c86977cf05a65d0186e15e181d9f43828473d12930dfafdc3fd6fa5f9e4e78fd |
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font_02_sfnt_off0000b207.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB207 | 6056 bytes |
SHA-256: 2e17e5c29696205513e8f7fd5774d3daa0f3993f70f03e3ded2afc5570c652b2 |
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