MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains a link farm of numerous external PDF documents, many hosted on Shopify. One of the primary links, 'https://ttraff.ru/pify?keyword=salesforce+admin+maintenance+exam+spring+19+answers', is identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to Salesforce exams, suggesting a lure to trick users into clicking the malicious link. The ML classifier strongly indicated maliciousness.
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=salesforce+admin+maintenance+exam+spring+19+answers
- http://files.blacksheepdivision.org/uploads/1/3/0/9/130969831/0be36fb937.pdf
- http://files.iliasvasilos.com/uploads/1/3/0/7/130775286/c1502f.pdf
- http://files.sportworkschiro.com/uploads/1/3/0/7/130740458/9141824.pdf
- https://cdn.shopify.com/s/files/1/0429/5265/5002/files/76323017208.pdf
- https://cdn.shopify.com/s/files/1/0430/9201/7305/files/balotojokalopigijeweser.pdf
- https://cdn.shopify.com/s/files/1/0440/5588/8022/files/water_and_wastewater_treatment_technology.pdf
- https://cdn.shopify.com/s/files/1/0428/3393/6547/files/52856613639.pdf
- https://cdn.shopify.com/s/files/1/0434/3834/2311/files/el_federalismo_mexicano.pdf
- https://cdn.shopify.com/s/files/1/0427/5470/3526/files/zekemuz.pdf
- https://cdn.shopify.com/s/files/1/0434/3146/1016/files/24060938462.pdf
- https://cdn.shopify.com/s/files/1/0432/1073/5780/files/associativismo_rural.pdf
- https://cdn.shopify.com/s/files/1/0430/3529/5905/files/pemitoguwixijiwojixezubir.pdf
- https://cdn.shopify.com/s/files/1/0440/6162/2437/files/dawogogizovarerugebobej.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00005a52.bin36061c893b92dd86387c28c7fe0dd838ccda3865727e1e3d01c31a9f4255febc |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5A52 | 5948 bytes |
font_01_sfnt_off00006e84.bin13678a14b930e6d42e11b2ac41b13981c2c7f5938cc30cfb194ad51886f1f1dd |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6E84 | 2092 bytes |
font_02_sfnt_off00007829.bin54a21bdc97bcbbb3c475dd46023a73cd69067b730669f9730b12be6072c6eb83 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7829 | 10788 bytes |
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