MALICIOUS
244
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
T1059.007 JavaScript
This PDF file was flagged by multiple heuristics as malicious, including a redirector link to dafemum.ru and a large number of links to disposable hosting sites. The document body, though heavily obfuscated, contains text related to reverse engineering, suggesting a lure to draw users to malicious content. The ML classifier and ClamAV detection further support its malicious nature, indicating it likely serves as a dropper or phishing document.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
Heuristics 6
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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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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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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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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://dafemum.ru/strik?utm_term=how+to+reverse+engineer+a+software+using+ollydbg In PDF document text
- https://cdn-cms.f-static.net/uploads/4417648/normal_5fd1b7382ecdb.pdfIn PDF document text
- https://rogaturo.weebly.com/uploads/1/3/1/0/131069781/vubozekatugawi.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4443598/normal_5fcce9e1233b0.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4500669/normal_6001cc31328ea.pdfIn PDF document text
- https://cdn.sqhk.co/josurowelimu/jjahcha/28449287327.pdfIn PDF document text
- https://gobitinu.weebly.com/uploads/1/3/4/9/134902795/bekuwitir.pdfIn PDF document text
- https://cdn.sqhk.co/delotijuw/2RghHnP/famous_quotes_about_love_and_friendship.pdfIn PDF document text
- https://vuwapelenepaje.weebly.com/uploads/1/3/4/7/134705438/4184581.pdfIn PDF document text
- https://dejutuzalusabi.weebly.com/uploads/1/3/4/8/134869317/wekom.pdfIn PDF document text
- https://cdn.sqhk.co/fujotojaxob/rmuS9jf/youtube_r_b_music_videos_2017.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4393637/normal_6013efc28de69.pdfIn PDF document text
- https://gobufitiribe.weebly.com/uploads/1/3/5/3/135321776/nejetemi.pdfIn PDF document text
- https://lomofoxagut.weebly.com/uploads/1/3/4/5/134524577/wivutik-gawototi-sosesilefupamav-vadipa.pdfIn PDF document text
- https://devigejijakefu.weebly.com/uploads/1/3/2/7/132740662/biwekoti-dipulalirumid-bekixupuduvudi-vefav.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4474998/normal_603cfbad156aa.pdfIn PDF document text
- https://jegofedakosufe.weebly.com/uploads/1/3/5/3/135320490/2641657.pdfIn PDF document text
- https://cdn.sqhk.co/nuwalimo/hRjgIjf/zodosasidugaz.pdfIn PDF document text
- https://cdn.sqhk.co/liripudeb/vjiWWgi/planets_at_war.pdfIn PDF document text
- https://cdn.sqhk.co/nasanoroge/3Kmpjif/milobupawefinex.pdfIn PDF document text
- https://muwubuzegutan.weebly.com/uploads/1/3/4/6/134649477/6308960.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
- 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_off0000f8b2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF8B2 | 5428 bytes |
SHA-256: 0f503e4124881079958408fc797f7aac2cd1c1892c6ffe324eaedeecd4460d74 |
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font_01_sfnt_off00010b54.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10B54 | 10772 bytes |
SHA-256: b7f0992c5306b7486bfb6fb004ff186cb7a6b701a850c771986e07dcbac94379 |
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