MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file contains numerous external links, many pointing to Weebly and other hosting services, suggesting a link farm or SEO poisoning tactic. The primary URL, 'https://zajinet.ru/award?keyword=bios+instant+notes+biochemistry+pdf', is identified as a redirector for free download phishing. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate a malicious intent to redirect users to potentially harmful content, likely for phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
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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Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINKPDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
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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://zajinet.ru/award?keyword=bios+instant+notes+biochemistry+pdf PDF link annotation
- https://pofefami.weebly.com/uploads/1/3/4/8/134884789/8926978.pdfIn PDF document text
- https://nifirasevaxo.weebly.com/uploads/1/3/4/7/134756957/4946730.pdfIn PDF document text
- https://kupifibadobibe.weebly.com/uploads/1/3/4/5/134512214/tedepodoxem-buwuwitozenovu.pdfIn PDF document text
- https://bifepafu.weebly.com/uploads/1/3/5/3/135315465/vedoraroxuwo_wunuzoxi.pdfIn PDF document text
- https://kuzirorox.weebly.com/uploads/1/3/0/7/130775715/825a8f4b0e.pdfIn PDF document text
- https://dapobirot.weebly.com/uploads/1/3/4/8/134888013/vogibajaleti.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://13a7c488-548c-4b48-b567-d2b0b9a3e1de.filesusr.com/ugd/85d67f_56b9348afcd14689ba0cae9431aa107c.pdf?index=trueIn PDF document text
- https://f8b57e9d-e272-4783-b6f5-6420e6b93425.filesusr.com/ugd/886b73_4b2ff3d3a3d54c2caa3d49243fc2f5e0.pdf?index=trueIn PDF document text
- https://e082b6be-64c0-45f6-a8ff-82b9c6f476f0.filesusr.com/ugd/1479de_aa25e1a795024b6cbce6769ba27f43c0.pdf?index=trueIn PDF document text
- https://0ecef3a8-5193-4df1-8dcb-1b7dd0f2be2a.filesusr.com/ugd/e6092c_cd6ed3ec85034b53a2a2f031fe7c0198.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/jajuzasalikirut/evh_5150_iii_50_watt_specs.pdfIn PDF document text
- https://f13dd0f9-fe0a-4257-a88d-d9af1a1cf0e3.filesusr.com/ugd/d954c5_7e3a1d5fcc364af7a745f657070d081c.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/kukupunopedon/chromium_for_macbook.pdfIn PDF document text
- https://s3.amazonaws.com/tixedujegibex/california_king_fitted_bed_sheets.pdfIn PDF document text
- https://s3.amazonaws.com/somisilegex/2_march_2019_amazon_quiz_answers.pdfIn PDF document text
- https://551f0ad2-75d1-4009-b90b-2f3e3e20230b.filesusr.com/ugd/c2bf0a_8e010e22a8364a379615924de0de5852.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/xapijifas/sobidexuzivefok.pdfIn PDF document text
- https://4b4b92a8-4ac5-4030-97d5-af0917f8c077.filesusr.com/ugd/0251f0_413a0335004542b681129cbdf53d0736.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_off0000e3df.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE3DF | 2828 bytes |
SHA-256: f1383d7cd59a6739427f7596f1165603adacbacc8f657d4e156367611f565abb |
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font_01_sfnt_off0000ede8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEDE8 | 5652 bytes |
SHA-256: f74df75c3fe0975ddbf71925bf7f5cd82ad07605c62dd30436fcad5706d07998 |
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font_02_sfnt_off000100fe.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x100FE | 10492 bytes |
SHA-256: 62c922abbef6dfa78418400c3e2285601f19eb70f832b26fe825253c0574ba2b |
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