MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
This PDF document was flagged as malicious by a machine learning classifier and contains numerous embedded links. One critical heuristic identified a link to a known malicious redirector service, ttraff.ru, which is likely used to obscure the ultimate destination of the attack. The document also exhibits characteristics of a link farm, with many URLs pointing to PDF files hosted on Shopify domains, suggesting a coordinated effort to distribute malicious content or SEO spam.
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=cxl+roman+numerals
- http://files.lifecoachkoreen.com/uploads/1/3/1/3/131384211/wibofelib.pdf
- http://files.bluemoonportraits.com/uploads/1/3/0/8/130813821/4518496.pdf
- http://files.woolseyacademy.com/uploads/1/3/2/6/132681517/kukabujaxa_kutasinuza_fikuza.pdf
- https://cdn.shopify.com/s/files/1/0432/3177/2835/files/31362264403.pdf
- https://cdn.shopify.com/s/files/1/0431/4896/8090/files/xutujokuvev.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/42539854631.pdf
- https://cdn.shopify.com/s/files/1/0430/7668/1882/files/62990144693.pdf
- https://cdn.shopify.com/s/files/1/0428/7194/7430/files/mepinodojarapagim.pdf
- https://cdn.shopify.com/s/files/1/0431/9238/5700/files/4640349210.pdf
- https://cdn.shopify.com/s/files/1/0435/2986/3320/files/76196194770.pdf
- https://cdn.shopify.com/s/files/1/0431/5312/9640/files/73207085616.pdf
- https://cdn.shopify.com/s/files/1/0430/2353/2195/files/65833000844.pdf
- https://cdn.shopify.com/s/files/1/0436/4750/0448/files/paxuzes.pdf
- https://cdn.shopify.com/s/files/1/0437/6916/8021/files/nclex_trick_2015.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_off0000619a.bin2d402d2ad2355c7394309488d94a325c19b9637f689ad0f6a3fb5e13ce2d9ac0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x619A | 4804 bytes |
font_01_sfnt_off000071ce.binb33e39bfc60a956068d85d0fd80d778b80a7b8e36b4d249e18bf679bcc1761cd |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x71CE | 13280 bytes |
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