MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file was identified as malicious by multiple heuristics and a machine learning classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many pointing to disposable domains, suggesting a link farm or SEO spam operation. The embedded URL `https://jacksth.ru/wix?keyword=chapter+4+systems+of+linear+equations+and+inequalities+answers` is likely part of this scheme, aiming to redirect users to potentially harmful content. No scripts were extracted, but the overall structure and link farm behavior are indicative of a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
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://jacksth.ru/wix?keyword=chapter+4+systems+of+linear+equations+and+inequalities+answers PDF link annotation
- https://beritugemob.weebly.com/uploads/1/3/4/3/134332724/6305596.pdfIn PDF document text
- https://sarejazaxixosib.weebly.com/uploads/1/3/4/6/134633098/113f2c33814c727.pdfIn PDF document text
- https://welomutulek.weebly.com/uploads/1/3/4/8/134873792/negigofafesix.pdfIn PDF document text
- https://lafuxekezijunu.weebly.com/uploads/1/3/1/4/131406487/229b7fd0463.pdfIn PDF document text
- https://generixa.weebly.com/uploads/1/3/5/3/135350481/petapo.pdfIn PDF document text
- https://dubitofux.weebly.com/uploads/1/3/4/4/134458445/2269575.pdfIn PDF document text
- https://gagegopered.weebly.com/uploads/1/3/4/8/134880179/javizebinuwilarep.pdfIn PDF document text
- https://letotanuvimipe.weebly.com/uploads/1/3/4/5/134598603/kifumu.pdfIn PDF document text
- http://pakirekugep.scienceontheweb.net/ccna_book_free_download.pdfIn PDF document text
- https://malugula.weebly.com/uploads/1/3/2/6/132695531/8408028.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/096a3e64-cb53-4b12-aa72-b29f911c1cb8/toro_recycler_20334_reviews.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/881f19ec-8f28-4915-8fe3-09d5939b02fa/13279650477.pdfIn PDF document text
- http://zenakezogutomu.onlinewebshop.net/gomavanodatupifuse.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/22421cf3-9781-4d3f-bd5d-c33cb607fb73/70069812018.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/dd7604dd-0779-4496-bb55-298878cc919b/tegazasaba.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/47553030-d56b-4721-b829-2f95881a217e/53668184075.pdfIn PDF document text
- https://aefb6378-f3ca-470a-b9d2-22936542d087.filesusr.com/ugd/fe129c_911853553eec4ee3ac9565edb821b54c.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/7954dbf6-9b0a-43fc-baaa-570a4657701d/86532401758.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/9fdcb1fc-81a8-47c8-9c92-4c082f408892/9810550702.pdfIn PDF document text
- https://065b66ee-25d8-4381-b309-094abc4d823c.filesusr.com/ugd/2703e6_3721edac6665403c8389b9a14b41fd62.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/829daf40-26f3-4829-afcf-ab6d5df62908/what_is_the_difference_between_samsung_galaxy_s9_and_s10.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_off0000cb52.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCB52 | 5596 bytes |
SHA-256: c294fcaffe5f93b816b67cbc772855c1bde61e34ca5190d459da4d8f17e485a4 |
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font_01_sfnt_off0000de41.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDE41 | 10748 bytes |
SHA-256: c50d683d7118bce5eb85d79aee5a5d19ad688e8fc67fac62409fcdf6cef01a27 |
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