MALICIOUS
166
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1566.002 Spearphishing Link
T1059.007 JavaScript
The PDF file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing lure. The heuristic 'SE_BRAND_CREDENTIAL_PHISH' indicates an attempt to impersonate UPS and directs users to a malicious URL for credential harvesting. The presence of numerous external URIs, many on disposable hosting, further supports the phishing campaign objective.
Machine Learning
- Nyx PDF Classifier malicious score 0.9996
Heuristics 6
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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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Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISHDocument impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://pelibifir.ru/123?utm_term=altium+designer+schematic+tutorial+pdf.
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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=altium+designer+schematic+tutorial+pdf PDF link annotation
- http://fodelogutejamit.getenjoyment.net/airtel_digital_tv_packages.pdfIn PDF document text
- http://jevafurevozu.mygamesonline.org/kelorebewegililefif.pdfIn PDF document text
- http://instapriz.online/accounting_cycle_problems_and_solutionsj388z.pdfIn PDF document text
- http://ital-tess.space/protein_structure_powerpoint_templates_freex541g.pdfIn PDF document text
- https://s3.amazonaws.com/boxalewijim/79325176763.pdfIn PDF document text
- http://auto-fishing-rods1.club/magic_coloring_coloring_pages_color_by_number_hardea7nb.pdfIn PDF document text
- http://momezalomakejo.22web.org/xegupomura.pdfIn PDF document text
- http://gelchlen.fun/what_are_the_rgb_values_for_goldm2b0b.pdfIn PDF document text
- https://s3.amazonaws.com/kizugokofo/jifepamagoguvoxila.pdfIn PDF document text
- https://s3.amazonaws.com/varolexexus/la_lala_la_song_neha_kakkar.pdfIn PDF document text
- http://labiosdewonda.com/uber_driver_account_deactivatedvrm3m.pdfIn PDF document text
- https://s3.amazonaws.com/kufazete/chain_mail_full_movie.pdfIn PDF document text
- http://gakagebir.mypressonline.com/banuxozovuzaziwutag.pdfIn PDF document text
- https://s3.amazonaws.com/rafiralexezol/nipol.pdfIn 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/d4e58ab4-e03f-49ca-8284-0b21dae985a8/swaddle_blanket_with_zip.pdfIn PDF document text
- http://mefomoximene.rf.gd/hd_movies_online_free_apk.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/97d675b3-a0f9-48c2-b875-b80b954395b5/32063752838.pdfIn PDF document text
- http://sesoxevanadike.epizy.com/community_service_log_template_word.pdfIn PDF document text
- http://welojorolepone.rf.gd/25287142088.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/47c0e3cd-3930-4ca1-9620-28109282d9e6/organizaciones_que_defienden_los_derechos_humanos_en_estados_unidos.pdfIn PDF document text
- http://tagifevada.rf.gd/canon_dslr_camera_price_list.pdfIn PDF document text
- http://mapegolirij.epizy.com/kegadidepezene.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_off0000f4aa.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF4AA | 5556 bytes |
SHA-256: f53d44a8dc9259de7278e868eba8aecf1b5099bd8def2cd0623a6c8259c9f433 |
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font_01_sfnt_off00010769.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10769 | 10492 bytes |
SHA-256: c4b26ba9f1af4223bec92f2bdb2dbb171e10c5a2dbc633db140dc2771634f584 |
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