MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The PDF contains numerous embedded URLs, with one specifically pointing to 'synerhu.ru', suggesting it functions as a link farm or phishing lure. The presence of PDF_SEO_DISPOSABLE_LINK_FARM heuristic further supports the idea that this document is designed to redirect users to potentially harmful sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9989
Heuristics 5
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://synerhu.ru/pbw?utm_term=rsos+admission+form+pdf PDF link annotation
- https://cdn-cms.f-static.net/uploads/4369933/normal_6041196188c63.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4454545/normal_5fc6b0135db8b.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4384831/normal_601d23171fd2a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4481275/normal_60c51f92221eb.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4450631/normal_5fe1726403653.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4418973/normal_6048c1bee21e4.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4451047/normal_60b85dfa154cf.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4382408/normal_600157ac844b4.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4482860/normal_6015d7fbcff8a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4386076/normal_602049a53d661.pdfIn PDF document text
- http://fedorahosted.org/lohitIn 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/f2ae253b-553c-4b09-ae34-f426625831d1/how_to_prove_two_lines_are_parallel_in_a_quadrilateral.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/304f1bb9-09dd-472b-82c6-f9cef73efed6/madebulo.pdfIn PDF document text
- http://pajinap.pbworks.com/f/50355894006.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/48c31bf8-1127-4b91-b958-935b9a694bd4/55055231968.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/1fbb2436-5534-44bc-a36e-b5cffd9f9499/42883151535.pdfIn PDF document text
- http://pigedigasexu.pbworks.com/f/gutot.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e43f7440-fa22-4ceb-9e3c-43acd7f94846/pebedusaz.pdfIn PDF document text
- http://tezalef.pbworks.com/w/file/fetch/144825291/vemobenax.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/9545e440-fa81-4584-b9f3-782bd15362bb/introduction_to_political_science_by_muhammad_sarwar_download.pdfIn PDF document text
- http://togiwuvoze.pbworks.com/w/file/fetch/144447879/diccionario_espaol_gratis_descargar.pdfIn PDF document text
- http://devemidu.pbworks.com/w/file/fetch/145206204/zutavuloboz.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/33821687-6c88-4010-8a40-b5305f5f6418/kamipofo.pdfIn PDF document text
- http://jajafad.pbworks.com/w/file/fetch/144419181/23214501596.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c7ff2828-84b0-4a48-949e-8f7af8ff7655/mossberg_590_magpul_stock_canada.pdfIn PDF document text
- http://ziduzobif.pbworks.com/f/76576020467.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
stream_004_off00012181.bin |
decompressed-pdf-stream | PDF FlateDecoded stream at offset 0x12181 | 13496 bytes |
SHA-256: 83ffccbff9140c9b604f3895681db7c0f04bbdeb38c4ca03c2226de1759fa339 |
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font_00_sfnt_off0000eb8f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEB8F | 5160 bytes |
SHA-256: 8cf0e81501a1271bce9e5738b4ffea4fc45f4790dbf8d877b29681c864b7be5d |
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font_01_sfnt_off0000fd0a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFD0A | 10700 bytes |
SHA-256: b1d337742c2d67c25b37d0d046b2670c401a73992baddee2aee09baf659c0976 |
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