MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file contains heuristics indicating it is a phishing lure and hosts a large number of external links, some of which are SEO-related. The embedded URL 'https://leonvi.ru/wix?keyword=incomplete+and+codominance+practice+worksheet+answer+key' suggests a pretext of providing an answer key to entice clicks. While no scripts were explicitly extracted, the PDF structure and the presence of numerous external links, including one pointing to a potential payload at 'https://s3.amazonaws.com/zumezeviwiz/tuvugunexinug.pdf', indicate a likely attack pattern involving social engineering to download a secondary stage.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
Heuristics 6
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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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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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Fake invoice / payment lure low SE_INVOICE_LUREDocument contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
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External URI info PDF_URIPDF contains an external URL action
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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://leonvi.ru/wix?keyword=incomplete+and+codominance+practice+worksheet+answer+key
- http://makebugobiwuka.mypressonline.com/57488212322.pdf
- https://cdn-cms.f-static.net/uploads/4366036/normal_603e7bf3eb3ff.pdf
- https://cdn-cms.f-static.net/uploads/4402504/normal_5fd5f3061ec22.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/zumezeviwakiz/tuvugunexinug.pdf
- https://s3.amazonaws.com/xapota/silent_hill_4_endings_guide.pdf
- https://uploads.strikinglycdn.com/files/0e8bbda6-be98-4b04-85e6-83e696f1ebe5/calories_in_taco_bell_chicken_soft_taco.pdf
- https://uploads.strikinglycdn.com/files/6c9288b8-8f9a-4d0b-a53f-c25e45e7c4bd/what_does_it_mean_to_be_a_martha.pdf
- https://6762652a-e869-40f3-960d-1446d4066230.filesusr.com/ugd/55e6b1_65826f09e9ce42689183efffcb37ddee.pdf?index=true
- https://b5b764bc-4fc6-48d7-9a4b-423a4d05f225.filesusr.com/ugd/3f2390_cb124d1c8f414e48b8823ee9565b2900.pdf?index=true
- https://uploads.strikinglycdn.com/files/7e4d71de-118f-444f-8a31-a17ecd3fe70a/74628768073.pdf
- https://4465b75e-e642-4f53-8c89-e22f0b9d4994.filesusr.com/ugd/ecd213_b4ba2b3a45f243f9877c25f62be41ebe.pdf?index=true
- https://a5fc3680-5c08-4cda-bd6c-abaa3bdf25bc.filesusr.com/ugd/ea5d7b_67b4040c94a945e9b88cbf2e354a1a1e.pdf?index=true
- https://uploads.strikinglycdn.com/files/99f0bb3b-a327-4b57-8d02-8bd18c280453/42037644800.pdf
- https://uploads.strikinglycdn.com/files/9c31bb6b-15be-4eca-a086-45ddec997311/what_kind_of_habitat_does_a_komodo_dragon_live_in.pdf
- https://uploads.strikinglycdn.com/files/7771f358-49f8-425d-8a3b-ecf17cb5f0df/the_gospel_of_the_holy_twelve_online.pdf
- http://zesafemumibow.myartsonline.com/a_cuanto_equivale_150_gramos_de_azcar_en_una_taza.pdf
- https://uploads.strikinglycdn.com/files/76d0eec7-b2a0-4a15-b0bb-704373428f7e/35484871967.pdf
- http://tefetuzuzip.myartsonline.com/how_to_repair_windows_10_corrupted_system_files.pdf
- https://ec8c99fd-5413-4e38-b6a0-2ccbba71fc6f.filesusr.com/ugd/de02f3_148034551c564b368e5370388e73305d.pdf?index=true
- https://uploads.strikinglycdn.com/files/1ec56660-bfec-481b-a47d-c94ed5596d3a/there_is_there_are_worksheet_food.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000f681.bin10a07fc969e6c8cf41398fcfefa625e426b29a45b33f3716d0886db1405c0d2a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF681 | 2900 bytes |
font_01_sfnt_off000100c4.bin93eaf96024c9132b537e40ab94c7ae2fa4d255bf77654bb65cf0d7632a56908c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x100C4 | 5508 bytes |
font_02_sfnt_off0001136a.bin2de3b8823e8570cb2bb1e4088464f1db9b249827e0fc9145a5ab357e67def985 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1136A | 11048 bytes |
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