MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users. The presence of a URL with a 'utm_term' parameter indicates an attempt to track user clicks, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent.
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://trafficel.ru/123?utm_term=distributed+systems+principles+and+paradigms+3rd+edition PDF link annotation
- https://nofakuxuwuxow.weebly.com/uploads/1/3/4/6/134684799/japeva_tojutur_pabiz.pdfIn PDF document text
- https://site-1245151.mozfiles.com/files/1245151/yisd_calendar_2018-_19.pdfIn PDF document text
- https://marizezibafive.weebly.com/uploads/1/3/4/8/134865590/8437245.pdfIn PDF document text
- https://luvalebasewe.weebly.com/uploads/1/3/5/3/135326782/fidafunibip.pdfIn PDF document text
- https://fuparududewon.weebly.com/uploads/1/3/1/8/131856041/gawewunigogorozeben.pdfIn PDF document text
- https://cdn.sqhk.co/bobimugura/jgthh4O/7524145477.pdfIn PDF document text
- https://muvanuxeb.weebly.com/uploads/1/3/4/0/134096654/jasuso.pdfIn PDF document text
- https://wigabededonekan.weebly.com/uploads/1/3/0/7/130740374/1319dafb7182.pdfIn PDF document text
- https://zusabave.weebly.com/uploads/1/3/1/4/131406295/280623.pdfIn PDF document text
- https://site-1171956.mozfiles.com/files/1171956/nosaga.pdfIn PDF document text
- https://gozobamo.weebly.com/uploads/1/3/4/7/134714837/4713a219c8.pdfIn PDF document text
- https://xitukamobem.weebly.com/uploads/1/3/4/6/134643312/xogepajuwuto.pdfIn PDF document text
- https://pudavupotel.weebly.com/uploads/1/3/5/3/135335197/8358219.pdfIn PDF document text
- https://site-1176306.mozfiles.com/files/1176306/divujixorenomerete.pdfIn PDF document text
- https://cdn.sqhk.co/zamepeja/gFmzhbS/56622060651.pdfIn PDF document text
- https://site-1179301.mozfiles.com/files/1179301/chopin_script_font_free_for_windows.pdfIn PDF document text
- https://xifanelisiwokof.weebly.com/uploads/1/3/0/8/130874433/a23e673dc55b43.pdfIn PDF document text
- https://cdn.sqhk.co/kitatoze/YfhawsM/vikejelizolinef.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4409118/normal_5ffece9539c01.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn 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
- https://savannah.gnu.org/projects/freefont/In PDF document text
- http://www.gnu.org/licenses/In PDF document text
- http://www.gnu.org/copyleft/gpl.htmlIn 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_off0001176c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1176C | 6744 bytes |
SHA-256: 127b44c9f93874c96d25eb7ddc4688780d8877ce931cf296363fb5748d8d514b |
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font_01_sfnt_off00012853.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12853 | 5800 bytes |
SHA-256: f8a9101fc95b5264b90ad2fd804b8289aa5fcf134dbf298e81ba5823346d0c63 |
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font_02_sfnt_off00013c03.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13C03 | 11000 bytes |
SHA-256: 846e5759e87f79424e661c425297bada42a029a5c3dfee41a33a42c431d6db24 |
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