MALICIOUS
154
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 external PDF files hosted on various domains, including a large number on cdn.shopify.com. One of the primary links directs to a known malicious redirector at 'ttraff.ru' with a keyword suggesting a lure for a 'critical thinking test'. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the extensive link farm and redirector suggest a phishing or content-luring campaign.
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=critical+thinking+test+pdf
- http://files.lazuliliterarygroup.com/uploads/1/3/1/1/131164402/4831477.pdf
- http://files.jroseweddings.com/uploads/1/3/1/4/131406717/005b8e6508.pdf
- http://files.blmslibrary.org/uploads/1/3/1/6/131606644/ebdfe5.pdf
- http://files.readysportsstore.com/uploads/1/3/2/6/132681207/0248fcec.pdf
- https://cdn.shopify.com/s/files/1/0428/1440/6823/files/japewotifiworogeb.pdf
- https://cdn.shopify.com/s/files/1/0431/0863/0681/files/fubav.pdf
- https://cdn.shopify.com/s/files/1/0432/4586/3067/files/13574170078.pdf
- https://cdn.shopify.com/s/files/1/0438/4122/4861/files/vasopomigani.pdf
- https://cdn.shopify.com/s/files/1/0434/6331/1512/files/nixotobalaze.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wogol.pdf
- https://cdn.shopify.com/s/files/1/0429/1254/6975/files/oblivion_darnified_ui.pdf
- https://cdn.shopify.com/s/files/1/0430/0413/3525/files/86737930493.pdf
- https://cdn.shopify.com/s/files/1/0432/5661/0979/files/movuzofajipaj.pdf
- https://cdn.shopify.com/s/files/1/0429/3017/6159/files/longman_academic_writing_series_1_teacher_s_manual.pdf
- https://cdn.shopify.com/s/files/1/0436/3111/6448/files/nosulojegugojesirizupifab.pdf
- https://cdn.shopify.com/s/files/1/0431/3281/3473/files/pasope.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_off0000766e.bin78be072bb4bbd3bcbe66236e66abc509e1b04f2012096d6ea1bac90758f6d51a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x766E | 5388 bytes |
font_01_sfnt_off000088ab.binfbde1c9b4f5954fe7f4342b52223247b6d84141e75ed8ba74dd552702277c4ef |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x88AB | 9436 bytes |
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