MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URI pointing to a suspicious domain, pelibifir.ru, which is likely intended to host a malicious payload or redirect to a phishing site. The document body, though heavily obfuscated, contains text related to Leo Tolstoy's "Three questions" and the wkhtmltopdf tool, suggesting a lure to disguise the malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9950
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/strik?utm_term=three+questions+by+leo+tolstoy+questions+and+answers+pdf PDF link annotation
- http://runolive.com/27454490672p7krp.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4391898/normal_603f3440ede99.pdfIn PDF document text
- http://gerda-msk.ru/which_printer_is_better_for_home_use_inkjet_or_laser75s0b.pdfIn PDF document text
- http://wekifojedopike.22web.org/corporation_bank_rtgs_neft_form_download.pdfIn PDF document text
- http://gupirod.iblogger.org/storm_front_2_wood_duck_decoys.pdfIn PDF document text
- https://cdn.sqhk.co/kufiremikaf/jhjO2BQ/57405712125.pdfIn PDF document text
- https://cdn.sqhk.co/zatejurix/XMHMif8/greenland_movie_2020_release_date.pdfIn PDF document text
- http://powerpoint4you.ru/blended_retirement_system_jko_pretest_answers1zwej.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4447267/normal_5fe9ef1990a46.pdfIn PDF document text
- https://cdn.sqhk.co/jezaziritav/JTJNiee/sazesulidudokogebin.pdfIn PDF document text
- http://1offpark.xyz/mivevebusimonuvawu4ftgl.pdfIn PDF document text
- http://senaxemuj.iblogger.org/74745060139.pdfIn PDF document text
- http://flowerport.market/magisterium_vol_2vdsu9.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4527237/normal_5fdbe32a62473.pdfIn PDF document text
- http://vasetar.iblogger.org/43254051786.pdfIn PDF document text
- https://cdn.sqhk.co/vugomupuzisa/jcnkPPt/ultimate_car_driving_classics_mod_apk_rexdl.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4405186/normal_5fe875698cfee.pdfIn PDF document text
- http://yandex-delivery.cc/note_papergvlsi.pdfIn PDF document text
- https://cdn.sqhk.co/nasubivapu/gfYifzc/weather_live_app_not_working.pdfIn PDF document text
- http://nerroba.info/68175118533ej3y2.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4454286/normal_6017c552bba4f.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
- https://uploads.strikinglycdn.com/files/1cf0f80c-60ec-495f-8044-aa3d7a3103ef/tebufizora.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/d6313ef3-81c6-4e7a-a814-b8ea9f19754b/96080165196.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/67b380d9-72fd-491b-9933-d72eaf92394f/tevekazipideriwalutokubid.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3cec78f8-68de-4048-b756-3427dbaa0910/triangle_congruence_worksheet_2_answer_key.pdfIn PDF document text
- http://lijaros.rf.gd/what_does_l_mean_on_ear_thermometer.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/acc0386a-4afe-4234-94ce-58496a6a8e8a/3848388850.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 |
|---|---|---|---|
font_00_sfnt_off0000f95a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF95A | 5420 bytes |
SHA-256: 9c6f609fa8610efe90b26dbc10ebd93fb33c9ab19ea29fa1d94bde45e50459ee |
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font_01_sfnt_off00010bc9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10BC9 | 10752 bytes |
SHA-256: 2019a977e268f8e66dee8568b2c6adad054d9ac2dac30235e373b195d8ea4a11 |
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font_02_sfnt_off0001307c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1307C | 4324 bytes |
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3 |
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