MALICIOUS
192
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a link disguised as a software download that redirects to known malicious infrastructure. It also functions as a link farm, pointing to numerous other PDFs hosted on various domains, some of which are disposable. The ML classifier strongly indicated maliciousness, and the presence of a redirector link confirms a malicious intent to lead the user to harmful 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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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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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.com/wix?keyword=skype+for+business+apk+free+download In PDF document text
- http://files.neosvf.com/uploads/1/3/2/7/132741535/vixegi.pdfIn PDF document text
- http://kutijore.ginstephens.com/uploads/1/3/1/3/131380739/wurebenojebulu-nunotefos-tujidedirewejak.pdfIn PDF document text
- http://dogigido.jaxscakesnbakes.com/uploads/1/3/0/8/130874488/letobo.pdfIn PDF document text
- http://files.derrickanthonyking.com/uploads/1/3/1/4/131454505/199e8f7f22d.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/1/0433/7090/5756/files/holoenzyme_and_apoenzyme.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/4312/6438/files/dumujunoduxaj.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/4677/1607/files/simple_and_compound_interest_word_problems_worksheet.pdfIn PDF document text
- https://d4b4a664-a029-4ea2-b58d-ec0fc092c9c2.filesusr.com/ugd/296484_1559a695ea5a4fd0a774537bc924d5b9.pdf?index=trueIn PDF document text
- https://cc1be322-9e98-4b5d-87d7-21e5d78b1f6c.filesusr.com/ugd/2c8d66_75e7c09c59ce40ea890e49696470a1e0.pdf?index=trueIn PDF document text
- https://5e0d899e-e2d4-42e6-b47c-60e3cb793222.filesusr.com/ugd/8ac1ab_12efc8425afb45029dce5b30b3d160b4.pdf?index=trueIn PDF document text
- https://653734a0-00eb-4d96-8dfd-30ccb61a0e35.filesusr.com/ugd/98e298_7397180ac1494606bbeb9730f72d23e5.pdf?index=trueIn PDF document text
- https://d373c9bc-d36e-4b66-baf1-98daaf09dc06.filesusr.com/ugd/e6092c_a13ad4837deb4ee387e7c86107e6ae71.pdf?index=trueIn PDF document text
- https://56f14c38-14d7-484f-94d0-af20c7b341ad.filesusr.com/ugd/3be3a7_a7e98084792d4dadb81e6ddc2d9cd129.pdf?index=trueIn PDF document text
- https://94593de0-dbdf-4234-a9bb-bce741cec564.filesusr.com/ugd/28b3f7_68e2ecd3471e49268d3f8c60c64e7ecd.pdf?index=trueIn 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_off0000637d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x637D | 5536 bytes |
SHA-256: 91fbd772975a7b312eccc58ec74b84e1e397ffddc538d2ddfea2cd7766d4f6b0 |
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font_01_sfnt_off00007678.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7678 | 10332 bytes |
SHA-256: 5dbe944f668f974ac22c9941ae98ee2673a9641945f7a7aa8606caeb0b6d53b8 |
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