MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ggtraff.ru/123?utm_term=harrison+bergeron+assessment+answers'. This URL is likely used to redirect the user to a phishing or malware distribution site. The ML classifier also flagged the PDF with a high probability of maliciousness, and ClamAV detected it as 'Pdf.Phishing.Trojan-d2568dad23a94d95-10044375-0'. The document body, though heavily obfuscated, suggests a lure related to 'Harrison Bergeron assessment answers'.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
Heuristics 4
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PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINKPDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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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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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://ggtraff.ru/123?utm_term=harrison+bergeron+assessment+answers
- https://cdn-cms.f-static.net/uploads/4367310/normal_5f87566dacbbe.pdf
- https://static.s123-cdn-static.com/uploads/4369174/normal_5fc85f34870e1.pdf
- https://cdn-cms.f-static.net/uploads/4378618/normal_5fbbb1d3e9f08.pdf
- https://cdn-cms.f-static.net/uploads/4468827/normal_5fabe048b9050.pdf
- https://cdn-cms.f-static.net/uploads/4391907/normal_5fa378ade0008.pdf
- https://cdn-cms.f-static.net/uploads/4388162/normal_5f9671dcccd07.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/tetofamuxulil/67177323926.pdf
- https://uploads.strikinglycdn.com/files/32b809cc-d1ea-45ba-80b8-6ffcaac93b6f/60187417039.pdf
- https://uploads.strikinglycdn.com/files/1644bb05-f8af-4b36-9681-6896cac40adc/cps_stemscience_fair_2020.pdf
- https://uploads.strikinglycdn.com/files/db63074b-4560-41c7-afea-53cf56b45d4b/92776359940.pdf
- https://uploads.strikinglycdn.com/files/4226c869-2f70-41d7-94d3-dda087a3ba36/4862821542.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000d27f.bin410132a0d18b7124b7600e25013e6312394deccffe95d56ab47549667c45db24 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD27F | 3068 bytes |
font_01_sfnt_off0000dd7a.bin9a0203e40329ca82c637c9fdd4352b95ccd47afe97e760dc2caab9b49dea34b2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDD7A | 5164 bytes |
font_02_sfnt_off0000ef06.bin4fd906c808b1616085e2ef62e7da8da16fcc8a261a9dcbc8beaf503101bbe22f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEF06 | 10568 bytes |
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