MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous embedded links, many of which point to a link farm hosted on Shopify. One of these links, https://ttraff.com/pify?keyword=research+article+format+pdf, is identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'Research article format pdf' and the authoring application 'wkhtmltopdf', suggesting a lure to disguise malicious links as legitimate research materials. The ML classifier also strongly flagged this PDF as malicious.
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.com/pify?keyword=research+article+format+pdf
- http://files.richfielducc.com/uploads/1/3/0/7/130776265/kofaxe-zajasoleladize.pdf
- http://files.graico.com/uploads/1/3/2/7/132740234/fanulejuledevis.pdf
- http://files.emservicesus.com/uploads/1/3/0/8/130874201/jebamen.pdf
- https://cdn.shopify.com/s/files/1/0428/3426/4231/files/ibps_clerk_exam_syllabus_2020_download.pdf
- https://cdn.shopify.com/s/files/1/0428/2885/7503/files/binary_code_letters.pdf
- https://cdn.shopify.com/s/files/1/0428/0041/4883/files/sirosawapuxibodotudawo.pdf
- https://cdn.shopify.com/s/files/1/0435/6725/1615/files/alcoholismo_y_tabaquismo_en_adolescentes.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mozesuseb.pdf
- https://cdn.shopify.com/s/files/1/0436/2836/3939/files/hollywood_male_actors_names_list_with_photos.pdf
- https://cdn.shopify.com/s/files/1/0428/0044/7655/files/74314318170.pdf
- https://cdn.shopify.com/s/files/1/0430/7730/4484/files/fobus.pdf
- https://cdn.shopify.com/s/files/1/0430/5174/5442/files/17242032961.pdf
- https://cdn.shopify.com/s/files/1/0428/8564/4447/files/37773128989.pdf
- https://cdn.shopify.com/s/files/1/0427/4854/3142/files/55351356887.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_off0000614a.binf9d42f556a69ee33c1ddcdbb845c19f9e2226798bf4d6f5dddc4e243342b2eab |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x614A | 5404 bytes |
font_01_sfnt_off00007387.bin193d50d88ca4b5f68b2b3ea18d64fd81eaa4a1a398f3aa572e19e1978313941c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7387 | 10752 bytes |
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