MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though partially corrupted, contains text suggesting it is an 'answer key' for a 'test booklet', likely a lure to entice users to click the malicious link. The ML classifier strongly supports the malicious nature of this PDF.
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=upstream+test+booklet+answers
- http://files.natalieasport.com/uploads/1/3/2/8/132814505/dulufele_danotizipa_xabulonomo.pdf
- https://cdn.shopify.com/s/files/1/0432/8646/2620/files/aluminum_alloys_structure_properties_mondolfo.pdf
- https://cdn.shopify.com/s/files/1/0435/6826/7423/files/between_shades_of_gray.pdf
- https://cdn.shopify.com/s/files/1/0429/2512/9891/files/79557649604.pdf
- https://cdn.shopify.com/s/files/1/0433/1631/4277/files/17753333112.pdf
- https://cdn.shopify.com/s/files/1/0433/9787/3831/files/conjuntivite_bacteriana.pdf
- https://cdn.shopify.com/s/files/1/0440/2728/1558/files/apparel_industry.pdf
- https://cdn.shopify.com/s/files/1/0440/5864/0534/files/89518128271.pdf
- https://cdn.shopify.com/s/files/1/0434/1334/0312/files/dufokakovoviriru.pdf
- https://cdn.shopify.com/s/files/1/0433/7978/5886/files/tokilafezuroguk.pdf
- https://cdn.shopify.com/s/files/1/0434/0970/3061/files/drdo_answer_key.pdf
- https://cdn.shopify.com/s/files/1/0437/0441/8455/files/college_lecturer_interview_questions_and_answers_uk.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000041f1.bin40d038b7645809607f799cfe7a12da021a588b99c13be0f55ee8a27693fe51aa |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x41F1 | 4992 bytes |
font_01_sfnt_off000052d8.binb7b3bd4788683c8a07a403f2f8be65971feee2df484381fe16ddf7c440d449fc |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x52D8 | 9136 bytes |
font_02_sfnt_off0000722a.bina542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x722A | 4324 bytes |
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