MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file contains numerous external links, with a critical heuristic identifying it as a PDF SEO link farm. One prominent URL, 'https://golowaki.ru/strik?utm_term=chicago+manual+of+style+bibliography+generator', is flagged as a redirector for a 'free-download phishing' lure. While no scripts were explicitly extracted, the PDF structure and the nature of the links suggest an attempt to drive traffic to malicious or manipulative content, aligning with spearphishing tactics.
Machine Learning
- Nyx PDF Classifier malicious score 0.9995
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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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://golowaki.ru/strik?utm_term=chicago+manual+of+style+bibliography+generator PDF link annotation
- http://xoguralelufilo.iblogger.org/87901278473.pdfIn PDF document text
- http://widonatozeg.mypressonline.com/85295881848.pdfIn PDF document text
- http://gukiduwonaxinef.getenjoyment.net/11780436750.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/tuxenipup/boiler_efficiency_calculation_example.pdfIn PDF document text
- http://sidepojedava.myartsonline.com/marine_corps_physical_fitness_program_mco.pdfIn PDF document text
- https://40e214c1-1950-44e8-a195-e2c6eeb23253.filesusr.com/ugd/a517f4_9efbdf765fc546faa02db9892fa26f88.pdf?index=trueIn PDF document text
- https://14864a69-2465-45da-a912-c6f78a3f99b9.filesusr.com/ugd/409ca8_d3937c4e462f4c36aedb0911ec955e0a.pdf?index=trueIn PDF document text
- https://466f9527-ada3-48b4-ac0c-4ba5546996ca.filesusr.com/ugd/a4b6b9_1ed0d3ee76a04a0cafd35641e386927d.pdf?index=trueIn PDF document text
- https://178fd8f3-986e-459b-a431-83c1f58eadb8.filesusr.com/ugd/7a8e82_41333ad28dc84033b9e26db372e523e8.pdf?index=trueIn PDF document text
- https://3a5aa097-47f9-475f-9992-83bceef25cc3.filesusr.com/ugd/f55bec_af741425231e4aa285611e9d489bbf11.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/jujadodedaruxix/ahpra_registration_form_overseas_nurses.pdfIn PDF document text
- https://s3.amazonaws.com/mokamoba/70223755965.pdfIn PDF document text
- https://8458b573-1d6d-478c-912c-b10a972f31df.filesusr.com/ugd/150112_49fcdb7eb9bb4e348e92a42e45055e7c.pdf?index=trueIn PDF document text
- http://xuzatazuji.epizy.com/transition_words_paragraph_worksheet.pdfIn PDF document text
- https://s3.amazonaws.com/nezanurugega/16183076221.pdfIn PDF document text
- https://720c7b34-a033-4bf0-83ea-6be17de98aa2.filesusr.com/ugd/03ef8e_f933b938a9c84e50a755a8cffb5f560b.pdf?index=trueIn PDF document text
- http://serefelotu.epizy.com/qurana_afaan_oromo.pdfIn PDF document text
- https://2ed821ec-8078-4e74-b11b-c5cec6a88262.filesusr.com/ugd/65e777_95555815745045308253a7684bfcac8f.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/jifedefujodu/98863836123.pdfIn PDF document text
- https://s3.amazonaws.com/gebukil/ey_indirect_tax_guide_2017.pdfIn PDF document text
- https://s3.amazonaws.com/muwomapotumugi/8987692811.pdfIn 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_off0001413c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1413C | 5576 bytes |
SHA-256: 3b5354093f74bef4088b9704c1fe15d223d8aa7c4d8c4214adced347e38e8e6e |
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font_01_sfnt_off0001540e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1540E | 11200 bytes |
SHA-256: f96232495dfe6778f0bb094768036fe2bd75d626f78cada25d2587d775a55402 |
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