MALICIOUS
184
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 external PDF files hosted on various domains. One prominent link, 'https://ttraff.ru/wb?keyword=today%20is%20monday%20free%20worksheets', is identified as a malicious redirector. The document body, though partially corrupted, also contains this URL and other PDF links, suggesting a lure to download potentially malicious content or visit phishing sites. The ML classifier strongly supports the malicious nature of this PDF.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 5
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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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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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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/wb?keyword=today%20is%20monday%20free%20worksheets In PDF document text
- http://files.professorwillis.com/uploads/1/3/0/9/130969819/3536095.pdfIn PDF document text
- http://files.grundmeyerleadersearch.com/uploads/1/3/1/6/131636990/sifixoj_jutixepipi_bevasagipaxuja_sivosukisozi.pdfIn PDF document text
- http://files.jewellhjohnson.com/uploads/1/3/2/8/132816158/252b1d3f634b0.pdfIn PDF document text
- http://files.vivagreb.com/uploads/1/3/1/6/131637034/kimab-sugala.pdfIn PDF document text
- http://files.birnamwoodlabs.com/uploads/1/3/1/4/131438448/zeruzuf.pdfIn PDF document text
- http://files.studioviemen.com/uploads/1/3/0/7/130739315/berafoxi.pdfIn PDF document text
- http://files.fsumarinemegafauna.com/uploads/1/3/0/7/130739830/baludurelupidafevuk.pdfIn PDF document text
- http://files.salemtownneighbors.org/uploads/1/3/2/7/132712163/770419a3265b44.pdfIn PDF document text
- http://files.myfaithfulcatholicjourney.com/uploads/1/3/2/6/132695660/3893591.pdfIn PDF document text
- http://files.largscolumba.org/uploads/1/3/1/4/131438839/kumodagowadokex-dogukajumurus-wozizid-zexipu.pdfIn PDF document text
- http://files.weednwenches.net/uploads/1/3/1/3/131380482/9657223.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://puxekagoduse.files.wordpress.com/2020/06/nuvodazenapuxujelozetanem.pdfIn PDF document text
- https://zizugulavak.files.wordpress.com/2020/07/2979813946.pdfIn PDF document text
- https://ligeveg.files.wordpress.com/2020/07/43507558431.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tobilefoseparavako.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/35535883354.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/welilavuruwad.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/42778697636.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/juxumadebamapetutorobegew.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tunamowari.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00006452.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6452 | 5112 bytes |
SHA-256: 6aa2a9ccfc6eceb826c267b4ec13cfe2a39bf1ec0fc24ded76718020f81887a5 |
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font_01_sfnt_off0000759e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x759E | 10756 bytes |
SHA-256: dcae2d742540d9a94e7ddc22bff135ee3eb89de6c1dac6ce0de4a6d9bbf0ab88 |
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