Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa5f8d439fb38ca3…

MALICIOUS

PDF

71.7 KB Created: 2021-03-05 12:04:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 3bfe8faae403a9699ba4cda85a2a6319 SHA-1: 2b5df51299b370b7f6cf973d86ffc2548b5d7a7a SHA-256: fa5f8d439fb38ca35185d6c22cc39a19e960ac8c2b124cd62aae00b9cc7ea15d
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The 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.
  • Embedded URL info EMBEDDED_URL
    One 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://resalured.ru/wix?keyword=algebra+2+with+trigonometry+textbook+prentice+hall PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4447089/normal_6030ee4d406a3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379856/normal_600848f47030e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488322/normal_5fdafd81b65f5.pdfIn PDF document text
    • https://sunivisoxeban.weebly.com/uploads/1/3/4/4/134493344/rilore-zefamoxif-gizegezat.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486772/normal_60246f926523a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388820/normal_60220e1562f2a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459054/normal_5fe9854382aad.pdfIn PDF document text
    • https://xitolomeka.weebly.com/uploads/1/3/4/0/134012462/bolalimilosokusigi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472200/normal_600ec0cfa890c.pdfIn PDF document text
    • https://rofosuvobatijam.weebly.com/uploads/1/3/4/6/134661532/xerorodifazarer.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/2b8d5111-037d-42e9-9cea-954424e78140/convertir_de_pulgadas_a_cms.pdfIn PDF document text
    • http://zubiluwetij.myartsonline.com/python_programming_book_in_hindi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1dc92b1c-7b31-471d-8c6d-31137af670ac/ensayo_del_libro_el_arte_de_la_guerra_sun_tzu.pdfIn PDF document text
    • https://e22e8d81-f41f-4d51-abb1-39b19d2d32bb.filesusr.com/ugd/96bf9d_5b419e6f9b1a4f2cbe075b109938acfc.pdf?index=trueIn PDF document text
    • http://bavotuvezomevi.myartsonline.com/kofevifajawumekezofa.pdfIn PDF document text
    • https://42e65457-ec34-4553-8979-78b6e302f774.filesusr.com/ugd/f1976d_cffa74ff51c94c31a2e5572dad29efe5.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ec04f1e-fb36-48f7-8866-2bc3c8ad83bb/excel_functions_cheat_sheet_2016.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d9c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9C8 5756 bytes
SHA-256: 7b4d05fcd0b0df51259ae6d988930f28849cbc3fd27023e7befdfba45ea3b9b6
font_01_sfnt_off0000ed55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED55 10460 bytes
SHA-256: a1af1d0fcd0ecf9758fa63ab30c5110bbbcff29c60d20bdf1d07d2b1597605b6

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