MALICIOUS
192
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The sample is a PDF file flagged as malicious by multiple heuristics, including a critical finding for linking to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool often used to create PDFs from web content. The numerous embedded URLs, many pointing to disposable or suspicious domains, strongly indicate a phishing or malware distribution attempt, likely delivered as a spearphishing attachment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
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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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 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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://crophysi.ru/award?keyword=generally+accepted+accounting+principles+with+examples+pdf In PDF document text
- https://cdn.sqhk.co/xakelafu/boMjfhc/syllabus_gh.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4374696/normal_5fea07fe30e6f.pdfIn PDF document text
- https://cdn.sqhk.co/ruvonusebex/ieifCl5/weekly_sales_deals_coupons_i_heart_publix.pdfIn PDF document text
- https://bolafuba.weebly.com/uploads/1/3/4/6/134668532/jafujo.pdfIn PDF document text
- https://cdn.sqhk.co/doporaba/5Ghfhaq/635546715.pdfIn PDF document text
- https://dadojunolibete.weebly.com/uploads/1/3/2/6/132683289/jenetulebulizizozafo.pdfIn PDF document text
- https://cdn.sqhk.co/visesefider/j8giHgi/my_mount_nittany_health_enroll_now.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4447437/normal_5fd90c1eb7dcc.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4385850/normal_602e3c90ddb70.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/5bc6b7f7-b92b-4c2b-87e5-3c66ead3e11a/soft_touch_also_easy_touch_meaning.pdfIn PDF document text
- https://s3.amazonaws.com/wewuxuviwar/diweveriletojufejeb.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/d786875a-b726-4889-ad10-d52f771ab136/30669336865.pdfIn PDF document text
- http://miwusox.rf.gd/al_ghazali_s_philosophical_theology.pdfIn PDF document text
- https://s3.amazonaws.com/ropuba/medical_authorisation_form_child_care.pdfIn PDF document text
- http://vofejobuvokare.rf.gd/learn_javascript.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/6292a6f2-4fe8-496e-89e3-c5eacdd47706/how_do_you_structure_a_poem.pdfIn PDF document text
- https://s3.amazonaws.com/mefovu/dna_structure_a_b_z_forms.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/785fc926-5704-41db-bcc7-61870f487f4b/professional_event_coordination_2nd_edition.pdfIn PDF document text
- https://s3.amazonaws.com/fadadedezeker/61565130261.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/9212bd27-5a55-4e62-a7cd-b4435690b556/what_questions_to_ask_in_networking_events.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_off0000eb5e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEB5E | 5864 bytes |
SHA-256: cfa1bb52158b6b889078b13026dbc688779303130f1e93a551752d6d5a0b57ce |
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font_01_sfnt_off0000ff4f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFF4F | 11252 bytes |
SHA-256: 12388d2dd1e0e54026061b25e4e3350c430c30977a6401b0f6c791c6b435fcef |
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