MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains embedded links that redirect to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains a URL that appears to be a lure for a 'Centos 7 linux server cookbook pdf'. The ML classifier also strongly flagged this PDF as malicious. The primary attack pattern involves redirecting the user to a malicious site via a seemingly benign link.
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.ru/pify?keyword=centos+7+linux+server+cookbook+pdf
- http://files.sydneymcneillwrites.com/uploads/1/3/1/3/131398076/texulagebum.pdf
- http://ziten.eleftherianoslab.org/uploads/1/3/1/3/131383613/1572214.pdf
- http://files.banaliabody.com/uploads/1/3/2/8/132814030/53c4017e2ff607.pdf
- http://kepopib.200westevents.com/uploads/1/3/1/4/131405965/294bdc03fa0acf1.pdf
- https://cdn.shopify.com/s/files/1/0431/7301/9808/files/35641191961.pdf
- https://cdn.shopify.com/s/files/1/0430/0088/9507/files/axis_bank_credit_card_cancellation_form.pdf
- https://cdn.shopify.com/s/files/1/0432/9160/7190/files/16717695476.pdf
- https://cdn.shopify.com/s/files/1/0435/1125/1099/files/rugadugivonuvawik.pdf
- https://cdn.shopify.com/s/files/1/0433/9607/1578/files/diversity_in_living_organisms_question_answers.pdf
- https://cdn.shopify.com/s/files/1/0435/3766/2103/files/monthly_budget_form.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/5866669006.pdf
- https://cdn.shopify.com/s/files/1/0431/4664/1570/files/85963568443.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_off0000d0ce.bin09e406ddac7a502dfe6eef5133c8d7cde40b8fd797fd5374ad1feb8ff2b07076 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD0CE | 5256 bytes |
font_01_sfnt_off0000e2ca.bin9dfd87605447094e5614f93f4c1f7cfb8efb41838537c53e74735b9aee2c2cfe |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE2CA | 12608 bytes |
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