MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous embedded URLs, many of which point to disposable domains and are associated with link farms, indicating a phishing or malicious redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. The document body, though heavily obfuscated, contains text related to 'Cambridge english proficiency masterclass answer key', suggesting a lure to trick users into visiting a malicious site.
Machine Learning
- Nyx PDF Classifier malicious score 0.9980
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://pelibifir.ru/123?utm_term=cambridge+english+proficiency+masterclass+answer+key PDF link annotation
- http://mx50off.pro/nostalgia_electrics_popcorn_maker_assembly_instructionsre2ox.pdfIn PDF document text
- http://eeuuurrrrr.space/79129580145w6q8z.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4417145/normal_5fde81143e76c.pdfIn PDF document text
- http://inostrana.com/what_is_the_difference_between_slt_1_and_slt_2ncxbp.pdfIn PDF document text
- http://rawitotizoxuk.scienceontheweb.net/91516303555.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4375086/normal_5fcc2de823d1c.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4467030/normal_60080a42bbc40.pdfIn PDF document text
- http://sutovuresas.mygamesonline.org/maxi_dress_2_day_shipping.pdfIn PDF document text
- http://rivepozepuxar.mywebcommunity.org/what_are_some_good_lab_safety_slogans_that_rhyme.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4394061/normal_5fc727e60bfd0.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4489596/normal_5feec8b1542f5.pdfIn PDF document text
- http://natur-bio.space/3030709981v7oq4.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4452381/normal_60164fc0b1263.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4470553/normal_602310b60d33c.pdfIn PDF document text
- http://wersita.fun/27253186731oawm9.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- http://tizexazebubo.atwebpages.com/pubelol.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/adfe3ced-a9ed-4204-bd7a-da9f0a744ad1/hp_laserjet_pro_400_m401dne_specs.pdfIn PDF document text
- https://s3.amazonaws.com/xezonijida/incident_at_absalom_station.pdfIn PDF document text
- https://s3.amazonaws.com/kozewuposoridil/elk_guided_hunts_montana.pdfIn PDF document text
- https://s3.amazonaws.com/vabedafozo/xokex.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/65d75bba-7948-4646-a2da-9d8fab978082/drawing_portraits_for_the_absolute_beginner.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/21690019-a630-44b3-9246-a00569d42215/kuduror.pdfIn PDF document text
- http://zakefuki.myartsonline.com/technical_drawing_basics.pdfIn PDF document text
- https://s3.amazonaws.com/bubodeliza/cydia_ipa_ios_11.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/24b276b9-3f53-4e47-86ed-2347a8ba03d3/47581267432.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00011343.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11343 | 5776 bytes |
SHA-256: 581bab6a197dd2aa5527c6d0901053ab03c395f4a4db53deea7621511bded1c4 |
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font_01_sfnt_off000126d1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x126D1 | 16276 bytes |
SHA-256: d98237143f09f29661390956e6d8a4c16c7d22c341ae3e3e78ece14d941707b3 |
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font_02_sfnt_off000155f4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x155F4 | 16060 bytes |
SHA-256: d8a1a34de14a7b8fce5e51635835121d353d188f9ac9ce1e11538509fd4c5cdc |
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font_03_sfnt_off00016a8c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x16A8C | 4324 bytes |
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2 |
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