MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal a significant number of external links, many pointing to disposable hosting, suggesting a link farm used for phishing or malware distribution. The embedded URLs, such as 'https://coretry.ru/pbw?utm_term=ap+chemistry+multiple+choice+pdf+2018', are likely part of this scheme to redirect users to malicious sites.
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://coretry.ru/pbw?utm_term=ap+chemistry+multiple+choice+pdf+2018 PDF link annotation
- https://gimelukisisira.weebly.com/uploads/1/3/4/0/134040832/5928032.pdfIn PDF document text
- https://dotiduku.weebly.com/uploads/1/3/4/2/134234749/4166551.pdfIn PDF document text
- https://xozobiju.weebly.com/uploads/1/3/4/7/134740052/xozivu.pdfIn PDF document text
- https://luwidejike.weebly.com/uploads/1/3/4/8/134881341/bapev.pdfIn PDF document text
- https://jidisoluko.weebly.com/uploads/1/3/6/0/136097174/xapotexo.pdfIn PDF document text
- https://lonamoki.weebly.com/uploads/1/3/5/9/135964194/2833160.pdfIn PDF document text
- https://nimizinimaji.weebly.com/uploads/1/3/4/7/134703428/526b1cc4.pdfIn PDF document text
- https://gojefofowuf.weebly.com/uploads/1/3/4/5/134596001/lajagalaxap.pdfIn PDF document text
- https://static.s123-cdn-static-d.com/uploads/4384652/normal_60b49913cd455.pdfIn PDF document text
- https://zixavuxo.weebly.com/uploads/1/3/1/3/131398386/03a527f317c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4408004/normal_60122adecd90d.pdfIn PDF document text
- https://static.s123-cdn-static-d.com/uploads/4490547/normal_60b25d191959c.pdfIn PDF document text
- https://tagarimoruta.weebly.com/uploads/1/3/4/3/134320697/1665cd230a.pdfIn PDF document text
- https://delosixopefo.weebly.com/uploads/1/3/4/3/134344482/nizolubunulawonepofi.pdfIn PDF document text
- https://kalabuzamebuku.weebly.com/uploads/1/3/4/3/134339718/wewosepiveralokasitu.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://sazupamufode.pbworks.com/w/file/fetch/144477834/redugakajoxedof.pdfIn PDF document text
- http://veniwusuj.pbworks.com/f/best_polygel_nail_kit_for_beginners_2020.pdfIn PDF document text
- http://mukibilevejo.pbworks.com/w/file/fetch/144472257/how_to_connect_jbl_flip_5_speakers_together.pdfIn PDF document text
- http://lopofemusun.pbworks.com/w/file/fetch/144496536/what_does_it_mean_when_my_wireless_charger_is_blinking_yellow.pdfIn PDF document text
- http://jitijaloj.pbworks.com/f/grease_rizzo_and_kenickie_scenes.pdfIn PDF document text
- http://jujirafamena.pbworks.com/f/principe_de_fonctionnement_dun_bruleur_gaz.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_off0000e7a4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE7A4 | 5796 bytes |
SHA-256: ba875f26e4bb347ea86e34e76eb4db32432c474090a0d3cee3d32ed8a70dc4b3 |
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font_01_sfnt_off0000fb4c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFB4C | 11544 bytes |
SHA-256: 86a8f9337445374eaaadcd685f6a9e05c27d5b4f73d0e84266b53c3b3cc8f5d9 |
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