MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a significant number of embedded links, with one identified as a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains URLs that are part of a link farm, suggesting an attempt to manipulate search engine results or lure users to malicious content. The primary malicious IOC is the redirector URL.
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/wb?keyword=primary%20structure%20of%20rna%20pdf
- http://files.creativconcepts.studio/uploads/1/3/0/9/130969896/c3825eb23c178f.pdf
- http://files.bibliognostic.com/uploads/1/3/1/3/131379042/26e46c2.pdf
- http://files.danamalart.com/uploads/1/3/1/6/131607331/vipinu-dafadekefopuxod.pdf
- https://cdn.shopify.com/s/files/1/0432/0044/6626/files/adobe_cc_2018_trial_reset.pdf
- https://cdn.shopify.com/s/files/1/0430/6993/1671/files/90234632379.pdf
- https://cdn.shopify.com/s/files/1/0428/9599/9129/files/ginixi.pdf
- https://cdn.shopify.com/s/files/1/0434/3519/6568/files/88077086848.pdf
- https://cdn.shopify.com/s/files/1/0432/5107/3174/files/16010166272.pdf
- https://cdn.shopify.com/s/files/1/0430/9309/8660/files/college_chemistry_experiments.pdf
- https://cdn.shopify.com/s/files/1/0440/8537/9237/files/39216543890.pdf
- https://cdn.shopify.com/s/files/1/0430/0223/2983/files/xupunigaviwupuwebuji.pdf
- https://cdn.shopify.com/s/files/1/0434/8857/5638/files/bumogipupareku.pdf
- https://cdn.shopify.com/s/files/1/0432/6719/5040/files/karomobilozidipil.pdf
- https://cdn.shopify.com/s/files/1/0432/2784/0669/files/98006799231.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_off00005c61.bin252fc73d1d738fb1dc37d1e1fec4c99adb78ca8094492e2551c36e10b155fd53 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5C61 | 5372 bytes |
font_01_sfnt_off00006e9b.bin1b036b80730cbd5c863ab84d884afc997b42d5c180f3028b8da62b7cbd570708 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6E9B | 10060 bytes |
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