MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a large number of embedded links, with a critical heuristic firing indicating it's a malicious redirector link farm. The primary URL, https://ttraff.ru/wix?keyword=friendly+letter+writing+worksheets+for+grade+3, is identified as a malicious redirector. The document body, though heavily obfuscated, contains this URL and other benign-looking PDF links, suggesting a lure to disguise malicious activity.
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/wix?keyword=friendly+letter+writing+worksheets+for+grade+3
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://static.usrfiles.com/ugd/33a16d_b5446bed6d68492bbfa85e0303b1b879.pdf
- https://static.usrfiles.com/ugd/7ff653_0ea39945353c4cd79977918aee5683f3.pdf
- https://static.usrfiles.com/ugd/b8c837_c69bbc6839a4483286f90113381a2ba4.pdf
- https://cdn.shopify.com/s/files/1/0434/8307/0630/files/bluecoat_academy_uniform.pdf
- https://cdn.shopify.com/s/files/1/0432/1945/2072/files/camera_lucida_microscope.pdf
- https://cdn.shopify.com/s/files/1/0430/8136/7701/files/meladavarazibuvebi.pdf
- https://cdn.shopify.com/s/files/1/0430/7465/0261/files/15671139975.pdf
- https://cdn.shopify.com/s/files/1/0434/0360/8216/files/fun_activities_for_esl_students.pdf
- https://cdn.shopify.com/s/files/1/0438/1959/7981/files/89523553735.pdf
- https://cdn.shopify.com/s/files/1/0430/5305/6149/files/nibir.pdf
- https://cdn.shopify.com/s/files/1/0432/3010/1668/files/avalon_hill_midway_rules.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/
- http://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00004e89.binf43dfe18221cd348941aa9022bf5ca0ff4ca8dbdd7ad4e8fa67e1b69b0f16f84 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4E89 | 5548 bytes |
font_01_sfnt_off00006181.binc14750fa73284bc5625efa44fafc7d505194446a8fc417538cd268895a31d2b0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6181 | 10348 bytes |
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