MALICIOUS
194
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 document body, though partially corrupted, suggests a lure related to payment acknowledgements. The presence of numerous external links, many hosted on disposable domains and Weebly, points to a link farm strategy designed to redirect users to potentially malicious content. The heuristic 'PDF_SEO_LINK_FARM' specifically highlights the mass of external PDF links, suggesting a phishing or malware distribution scheme.
Machine Learning
- Nyx PDF Classifier malicious score 0.9992
Heuristics 7
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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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Fake invoice / payment lure low SE_INVOICE_LUREDocument contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
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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://midufefew.ru/123?utm_term=letter+format+for+payment+acknowledgement PDF link annotation
- https://xadonuxezi.weebly.com/uploads/1/3/4/1/134131919/5632d0ef804750.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4478148/normal_5fd7cba70405e.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4390069/normal_5fd8f59f4ce54.pdfIn PDF document text
- https://dubobovutorikug.weebly.com/uploads/1/3/5/3/135332124/4316573.pdfIn PDF document text
- https://roxejane.weebly.com/uploads/1/3/4/4/134486752/8927066.pdfIn PDF document text
- http://naxuvazexipok.sportsontheweb.net/captured_by_a_better_vision.pdfIn PDF document text
- https://bonopabugo.weebly.com/uploads/1/3/4/5/134581776/fukaxodip-fagig.pdfIn PDF document text
- https://gojemafofapuvog.weebly.com/uploads/1/3/2/6/132681271/jipovesotewo-tiwuxufupi.pdfIn PDF document text
- https://kibimibenafozo.weebly.com/uploads/1/3/5/9/135979164/79f4f.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4402501/normal_60470e34bdfb7.pdfIn PDF document text
- http://xevusezes.medianewsonline.com/rawogarirefiwilesuzinivux.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4379859/normal_602dc9b45cf9c.pdfIn PDF document text
- https://gabavogafev.weebly.com/uploads/1/3/4/0/134000006/tulodepomagiras.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4449014/normal_5fe25f049b956.pdfIn PDF document text
- https://sewatebemadog.weebly.com/uploads/1/3/1/1/131164437/b22c4e.pdfIn PDF document text
- http://xorabawik.medianewsonline.com/wamivuvezabozikikan.pdfIn PDF document text
- http://gimogorox.22web.org/4279897682.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4388165/normal_5fe6061535fdf.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4492897/normal_600244b37c080.pdfIn PDF document text
- https://munefetuwavebif.weebly.com/uploads/1/3/2/6/132683017/47a1d02b3bd.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://jupanadipi.rf.gd/kusub.pdfIn PDF document text
- http://sobikunukozi.rf.gd/waste_disposal_management.pdfIn PDF document text
- http://fazafowunop.epizy.com/re2_chess_puzzle_claire_2nd_run.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_off0000ed79.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xED79 | 5496 bytes |
SHA-256: 8e04c61c8946ef8effdce4293e4dab0c5ee6d03b493bca3cba194cc354143a7a |
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font_01_sfnt_off0001003a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1003A | 11160 bytes |
SHA-256: 5d7e612f187a8957c57b2e049bee1264c6035768ad93e03c5ae5c7b1c62fd3d5 |
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