MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a link that redirects to a malicious URL, masquerading as an Avast offline update. This is supported by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic and the embedded URL. The PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, many hosted on Shopify, suggesting a tactic to distribute malicious content. The ML classifier strongly flagged this PDF as malicious.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 4
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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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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/pify?keyword=avast++offline+update
- http://bemonomoz.jbhealth.co.uk/uploads/1/3/2/6/132695351/8456457.pdf
- http://files.chambleesoccer.com/uploads/1/3/1/3/131379054/5367903.pdf
- http://fuwesa.c34u.org/uploads/1/3/1/3/131384635/kurawobalugemusi.pdf
- https://cdn.shopify.com/s/files/1/0429/3551/7337/files/kesilepevutikitajawaje.pdf
- https://cdn.shopify.com/s/files/1/0435/6639/9647/files/lovebak.pdf
- https://cdn.shopify.com/s/files/1/0432/0657/4240/files/sogipadetedop.pdf
- https://cdn.shopify.com/s/files/1/0435/3448/3605/files/buku_sejarah_dinasti_abbasiyah.pdf
- https://cdn.shopify.com/s/files/1/0428/8725/0087/files/55562751230.pdf
- https://cdn.shopify.com/s/files/1/0431/9684/2142/files/11686413758.pdf
- https://cdn.shopify.com/s/files/1/0433/2732/4310/files/67429599319.pdf
- https://cdn.shopify.com/s/files/1/0429/9423/7589/files/free_vin_report.pdf
- https://cdn.shopify.com/s/files/1/0436/5592/1822/files/2017485091.pdf
- https://cdn.shopify.com/s/files/1/0432/8092/4837/files/94506026723.pdf
- https://cdn.shopify.com/s/files/1/0430/8588/9689/files/77112807972.pdf
- https://cdn.shopify.com/s/files/1/0433/4492/0734/files/36925584754.pdf
- https://cdn.shopify.com/s/files/1/0431/6495/8879/files/interview_questions_and_answers_for_banks.pdf
- https://cdn.shopify.com/s/files/1/0431/0564/8807/files/elternbrgschaft_miete_vorlage.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00005f2e.bin53b06fc49365a4fdb1d10fa540075c0aaaf7bcdb9f0fa7a422f56ffdadf66607 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5F2E | 4988 bytes |
font_01_sfnt_off0000703c.bin9fb7522bec81fa05d6fcf81147bdc84bc6224a6c795fa969bc0ac091ebedbb05 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x703C | 10052 bytes |
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