MALICIOUS
204
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains embedded JavaScript and a critical heuristic firing for a malicious redirector link. The document body, though heavily obfuscated, contains text related to 'types of chemical reactions webquest answer key' and a URL that matches the malicious redirector. This indicates a social engineering lure to trick users into visiting a malicious site. The PDF also contains a link farm, suggesting an attempt to manipulate search engine results or distribute further malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 6
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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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Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTHA PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
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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.club/wix?keyword=types+of+chemical+reactions+webquest+answer+key In PDF document text
- http://zivapezas.theriftny.com/uploads/1/3/1/4/131407178/8374232.pdfIn PDF document text
- http://gavason.jh-porcelain.com/uploads/1/3/1/3/131381787/pagabefejubilewezor.pdfIn PDF document text
- http://files.friederikeluisekelle.com/uploads/1/3/2/6/132683181/6947924.pdfIn PDF document text
- http://files.polishedspurtackco.com/uploads/1/3/2/6/132695530/kamoxufifovij.pdfIn PDF document text
- http://somateke.drmelissacordero.com/uploads/1/3/0/7/130739024/9372686.pdfIn PDF document text
- http://files.asapartcentre.com/uploads/1/3/0/9/130969735/furunolelob-dakalajipuwel-mebufomasufol-reluk.pdfIn PDF document text
- http://redabit.thetriptheater.net/uploads/1/3/1/4/131408984/7f04a52a1.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/7506/7297/files/aha_bls_questions_and_answers_2017.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/1624/1831/files/bokuvidabefuwisipiletu.pdfIn PDF document text
- https://0bacdd8f-b0d8-4d6a-a2d3-a79cb025f890.filesusr.com/ugd/89c6ad_aa525468fb4f488c96c0264ea4db0fd4.pdf?index=trueIn PDF document text
- https://0271539a-8c4f-49ba-bb93-eb446802c771.filesusr.com/ugd/4bb894_092e56dbc23b469e8a5a2f2edf3fb246.pdf?index=trueIn PDF document text
- https://36ba66f7-5dba-43b6-8197-ba1bf37b65a2.filesusr.com/ugd/4e977a_ff5b36f7f7a04bb88d556c3fee4e8953.pdf?index=trueIn PDF document text
- https://7cf8ac05-3ebf-4dc1-9e6f-43150784079e.filesusr.com/ugd/a43ec6_f82b1bcb1c1e4e35b845be2d254d949f.pdf?index=trueIn PDF document text
- https://0ad33f1d-d02c-4aef-aece-ca19206bbf19.filesusr.com/ugd/e42c35_21d5753a80504d46b6b83d666a6fee5f.pdf?index=trueIn 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_off0000676a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x676A | 5728 bytes |
SHA-256: 4f4f087edb1d168039a3d007f4ff055f6110e8fd06fc69a5d1b1e5f9e235b60d |
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font_01_sfnt_off00007ad9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7AD9 | 10308 bytes |
SHA-256: b862d07ee42f0f3a42597de88b0940f8631bc5213a8637365ea0d2b3fae07e96 |
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