MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a critical heuristic firing for a malicious redirector link, disguised with text suggesting a free book download. The document body, though heavily obfuscated, contains the same malicious URL. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external resources, some of which are hosted on potentially compromised Shopify domains. The primary malicious URL is https://ttraff.com/wb?keyword=class%2011%20python%20book%20pdf%20download, which likely leads to further malicious content.
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/wb?keyword=class%2011%20python%20book%20pdf%20download
- http://tugoxe.bourkeysblog.net/uploads/1/3/0/9/130969600/aefae71f.pdf
- http://vifus.mandrcatering.com/uploads/1/3/0/7/130776407/pinab-wufalepop-nuxavut.pdf
- http://riwabepi.timsbikeshop.com/uploads/1/3/0/8/130814526/f8f592e527e066.pdf
- https://cdn.shopify.com/s/files/1/0432/5038/5051/files/lutifobalakifogupijew.pdf
- https://cdn.shopify.com/s/files/1/0431/7567/4012/files/black_boy_chapter_2.pdf
- https://cdn.shopify.com/s/files/1/0431/3337/0529/files/school_calendar_2020_20_ireland.pdf
- https://cdn.shopify.com/s/files/1/0434/8359/4917/files/45107527940.pdf
- https://cdn.shopify.com/s/files/1/0429/8607/8369/files/12511494738.pdf
- https://cdn.shopify.com/s/files/1/0434/3287/0037/files/32920250516.pdf
- https://cdn.shopify.com/s/files/1/0435/6715/3313/files/tubadevufanojamirabapo.pdf
- https://cdn.shopify.com/s/files/1/0435/3848/1320/files/approaches_to_social_research_5th.pdf
- https://cdn.shopify.com/s/files/1/0433/8227/6257/files/module_8_basic_aerodynamics_questions.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_off00004bc4.bin7c9f7155d5311bc33749fe91d05f10eb0d505c31533ff6ae88733361b4555282 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4BC4 | 5388 bytes |
font_01_sfnt_off00005e30.bin989feb3f35688704937f951165c62dc65aee53459bf2511a34cfd43d59ad45cb |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5E30 | 9932 bytes |
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