MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high probability of malicious intent. It contains numerous external links, many pointing to disposable hosting, suggesting a link farm or phishing operation. The document body, though heavily obfuscated, contains text related to 'Anatomy and physiology lab manual exercise 10 answers', likely a lure to entice users to click on the embedded malicious URLs.
Machine Learning
- Nyx PDF Classifier malicious score 0.9992
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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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://nipisod.ru/strik?utm_term=anatomy+and+physiology+lab+manual+exercise+10+answers PDF link annotation
- http://creditscoretracking.info/jakiw0vpup.pdfIn PDF document text
- https://cdn.sqhk.co/ketejeti/ibkidQb/dr_david_davenport_dds.pdfIn PDF document text
- http://medemukiduba.sportsontheweb.net/82165007957.pdfIn PDF document text
- http://piwofoterif.sportsontheweb.net/lost_girl_show_cast.pdfIn PDF document text
- https://cdn.sqhk.co/tunaluvum/jcijVFD/wavunogezufuxaguniwokiki.pdfIn PDF document text
- https://cdn.sqhk.co/zuxifobiro/hHYhbCL/rational_expressions_worksheet_3_simplifying.pdfIn PDF document text
- https://cdn.sqhk.co/rizavoxaje/hA90uF8/7728640350.pdfIn PDF document text
- https://cdn.sqhk.co/wuwosexed/hgiahhd/xodaxijiradoni.pdfIn PDF document text
- http://japancar-sib.ru/88392490442wkpgw.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://d54d55f4-8004-4613-9f19-7b96cbed0ae7.filesusr.com/ugd/ce4b32_693246488de14ec0b7bc333be3db5cf1.pdf?index=trueIn PDF document text
- http://zilisidojaze.myartsonline.com/scanned_to_word_converter_freeware_download.pdfIn PDF document text
- https://8ab1a2d5-e5b1-44c5-a28c-e09959565f0d.filesusr.com/ugd/eb712c_c326476e000c444cbc8a79c7acc7f416.pdf?index=trueIn PDF document text
- http://fuvarijes.atwebpages.com/gufub.pdfIn PDF document text
- https://dedb376b-efc3-4528-ac10-fc65d12f866c.filesusr.com/ugd/5f6074_bdfa95761d7743c78a2ca52ae534bb65.pdf?index=trueIn PDF document text
- https://1e438cd7-6f3b-42ac-a97b-d13a75fa135b.filesusr.com/ugd/0c268c_6737a5040a8747d5befd00c728732776.pdf?index=trueIn PDF document text
- https://6cda4dd4-8aac-43e7-8003-7c0eea9f7907.filesusr.com/ugd/34e26e_ff21ba2a8102455fb7fce30e863aee5b.pdf?index=trueIn PDF document text
- https://e082b6be-64c0-45f6-a8ff-82b9c6f476f0.filesusr.com/ugd/1479de_2c0658e180c2453794d36cc21f6f159d.pdf?index=trueIn PDF document text
- https://0eb00d84-361a-45dc-b346-1af5c8eb785c.filesusr.com/ugd/d79848_eba7c462e2194a50b1703c9a924451a3.pdf?index=trueIn PDF document text
- http://nukivamo.myartsonline.com/taber_s_cyclopedic_medical_dictionary_22nd_edition_free_download.pdfIn PDF document text
- http://muliwavanebebo.onlinewebshop.net/32878936009.pdfIn PDF document text
- https://b615eccc-4413-4b1d-8109-ede925130a83.filesusr.com/ugd/0994f9_fa2832ca54374060b4984b54a2208778.pdf?index=trueIn PDF document text
- http://luxupovokajaf.onlinewebshop.net/vukuvonadowizugudenewoj.pdfIn PDF document text
- https://45f91bdd-2b68-4e60-ae2c-b14373ae5332.filesusr.com/ugd/0d089b_25988d1bdfde45b19247f239da423bcf.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_off0000fdfb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFDFB | 6072 bytes |
SHA-256: a407a04b15773607a8c35b35b0a956b96df80ad4d41b9c067eabaae9cb4d2413 |
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font_01_sfnt_off0001129b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1129B | 11068 bytes |
SHA-256: 3d97dad489e290cad5f2d5982d2ba5deb00e89e101bea22d1e7487d2bbf7e343 |
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