MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains a large number of external links, many pointing to disposable domains, suggesting a link farm or SEO spam operation. One notable URL is https://baarspo.ru/award?keyword=cardiotoxicidad+por+trastuzumab+pdf, which is likely part of this scheme. The document body is heavily obfuscated and contains metadata indicating it was generated by wkhtmltopdf.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
Heuristics 6
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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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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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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://baarspo.ru/award?keyword=cardiotoxicidad+por+trastuzumab+pdf PDF link annotation
- http://zujoxuxosaja.getenjoyment.net/86962991295.pdfIn PDF document text
- http://jisuwadizo.22web.org/latest_android_version_for_samsung_s6_edge.pdfIn PDF document text
- http://goworudubilit.iblogger.org/vuxilulizunavafisub.pdfIn PDF document text
- http://lelekelosutov.getenjoyment.net/13394913571.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://s3.amazonaws.com/lukepepe/multiplayer_survival_games_pc_2020.pdfIn PDF document text
- http://bolanid.epizy.com/ruzujutowoval.pdfIn PDF document text
- https://s3.amazonaws.com/gapuruxumeg/grammar_jeopardy_game_6th_grade.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3e780278-d45b-4962-8c71-793bf4144f28/why_wont_my_nook_hd_connect_to_wifi.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/5c5bf149-e8db-45d7-87ac-69cf9c5fae6e/what_is_practical_knowledge_in_philosophy.pdfIn PDF document text
- https://5b949be5-44ef-49af-96c7-0ebaa8fe632e.filesusr.com/ugd/3402b1_1e95e92ae43f4772a92865cf1663bd0f.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/20ddc8a2-857c-49f7-b575-970edf1852cc/36360571771.pdfIn PDF document text
- https://s3.amazonaws.com/metubevozisul/business_brochure_design_template.pdfIn PDF document text
- https://4647adb0-9c01-46a1-aef1-4380d5873f13.filesusr.com/ugd/edb4a7_042de898dc1a4c63895b702c9a429ee0.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/4c188f63-badc-4a0d-89de-11c305694a73/jvc_mini_dv_camcorder_to_computer.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/d2ae2f24-714f-4738-b771-2b4a8ff664ae/is_keurig_dr_pepper_a_good_investment.pdfIn PDF document text
- https://b4a3f2a4-2f34-4203-9133-4607a2e00ae8.filesusr.com/ugd/84a5c6_512fe5da9d36401d81dbba6242dd754d.pdf?index=trueIn PDF document text
- https://09ec9d85-9312-4337-94d0-b84080e05f2e.filesusr.com/ugd/ac0094_357b88f0a0264c94be262e85ed70f911.pdf?index=trueIn PDF document text
- https://6c8027e1-9878-41b3-a9ef-32ba2b6bcd02.filesusr.com/ugd/185811_985ed93932b94545b26b7d0513686500.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0001108e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1108E | 5208 bytes |
SHA-256: 141f36895042091a417c9864bff57e1cb010fdfcfd842d7a80f2fbbdfcefcb09 |
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font_01_sfnt_off00012255.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12255 | 12044 bytes |
SHA-256: af4bafc36b8addeff33178f03c15f1032a0882d462b25a9ccb8d3ec6e983f276 |
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font_02_sfnt_off00014970.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14970 | 4324 bytes |
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333 |
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