MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF file was flagged as malicious by an ML classifier and contains a critical heuristic firing for a malicious redirector link. The document body, though heavily obfuscated, contains the same malicious URL. The presence of numerous other links, many pointing to benign Shopify PDFs, suggests a link farm or SEO poisoning tactic to disguise the malicious redirector. The primary intent appears to be directing users to the malicious 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.club/pify?keyword=vo+tuyet+voi+nhat+rap
- http://files.belviderestar.org/uploads/1/3/1/3/131398236/182428.pdf
- http://files.klutchcuisine.com/uploads/1/3/1/3/131380342/9328449637.pdf
- https://cdn.shopify.com/s/files/1/0436/6719/4021/files/cutnell_and_johnson_physics_5th_edition.pdf
- https://cdn.shopify.com/s/files/1/0433/8424/2334/files/signs_and_symptoms_of_pregnancy_induced_hypertension.pdf
- https://cdn.shopify.com/s/files/1/0431/8917/4432/files/28051875081.pdf
- https://cdn.shopify.com/s/files/1/0431/4251/2802/files/lean_six_sigma_yellow_belt_exam_answers.pdf
- https://cdn.shopify.com/s/files/1/0429/2752/1948/files/tenunimepipewuta.pdf
- https://cdn.shopify.com/s/files/1/0430/6105/1546/files/carb_cycling_diet_meal_plan.pdf
- https://cdn.shopify.com/s/files/1/0430/5872/5018/files/65120430314.pdf
- https://cdn.shopify.com/s/files/1/0429/7926/2623/files/10505128835.pdf
- https://cdn.shopify.com/s/files/1/0434/0508/2780/files/gakonali.pdf
- https://cdn.shopify.com/s/files/1/0427/8288/4006/files/81268585196.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_off00004559.binbc3acdc5d4eabbc95381a62c9ac8356cf69d482af7f4212a8cdda61e0da825f0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4559 | 4824 bytes |
font_01_sfnt_off000055c9.bin575f715cf120b9f5be48194ffc691699b3ebc23c341991bae2c2d2f25512837e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x55C9 | 9840 bytes |
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