MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com, and one critical link to a known malicious redirector at ttraff.ru. The ML classifier strongly indicated maliciousness. The document body, though heavily obfuscated, contains the target URL and appears to be a lure for educational 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.ru/pify?keyword=math+worksheets+on+slope+and+y+intercept
- http://gepivapet.rodmellfund.org/uploads/1/3/1/4/131453329/8382f275bab2.pdf
- http://files.crystallizationspa.com/uploads/1/3/0/7/130739810/59261d314.pdf
- http://files.asaswallhangers.com/uploads/1/3/2/7/132712093/3206857.pdf
- https://cdn.shopify.com/s/files/1/0440/1351/9006/files/how_to_clear_cache_on_macbook_pro.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fakuwonilojovaxibudebu.pdf
- https://cdn.shopify.com/s/files/1/0432/8770/7804/files/26344541532.pdf
- https://cdn.shopify.com/s/files/1/0450/4292/5726/files/open_file_in_browser_js.pdf
- https://cdn.shopify.com/s/files/1/0438/1956/5216/files/american_college_of_obstetricians_and_gynecologists_guidelines_preeclampsia.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13977314479.pdf
- https://cdn.shopify.com/s/files/1/0431/7259/3820/files/77436556976.pdf
- https://cdn.shopify.com/s/files/1/0429/2398/3001/files/83743007291.pdf
- https://cdn.shopify.com/s/files/1/0429/0979/4463/files/36334100467.pdf
- https://cdn.shopify.com/s/files/1/0434/2353/1158/files/garafekagiwex.pdf
- https://cdn.shopify.com/s/files/1/0429/5488/3231/files/37954078275.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_off000063f1.bin7796e9e5e974be9a9c8b2d165e4e35a2a9cf2b9621b8235961224b81eb48df31 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x63F1 | 5424 bytes |
font_01_sfnt_off00007679.bin3eba35fb67cd2289c4e7984922e1442a81a1fbf23bd31894e4defce01b8c24fb |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7679 | 10276 bytes |
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