Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc75291075ef5f2e…

MALICIOUS

PDF

90.6 KB Created: 2021-05-27 21:49:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: c1fcd66820910779cc9ab4c917fceae3 SHA-1: 82b7f90a567e6ad16d4d4cafab8099c9c6f7e2a0 SHA-256: bc75291075ef5f2e470d4a0bd6d1e3d4cdcd6f65282ad995ca2743d9c68c7872
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9966

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://leonvi.ru/strik?utm_term=what+does+dysphagia+mean+in+spanish PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4379355/normal_5fe1351e1c117.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417834/normal_5fe3f35240a0a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374853/normal_602b6fe2e92b3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486367/normal_600a791b3a039.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413851/normal_602e7c5f10586.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453729/normal_5fffbc361fe8b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424646/normal_601e881469c8f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374533/normal_5ff223be4d984.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490961/normal_6065c7b808923.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369168/normal_5fe9344801886.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414336/normal_6026ed22b00b3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483083/normal_602fa74e6b551.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501659/normal_5ff2041524ab1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476757/normal_5fe947e60d551.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478134/normal_601d781ddcb8e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374698/normal_6005433871fb4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492250/normal_600b0d3055f62.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad328a17-9d77-489c-b4df-854ef5bf1b79/tarowixonasabupesow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/abcca0f7-678e-4ae7-8461-79d1e28449aa/99658063771.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0b6c0a8-c18c-4d0e-bc7a-b8ae1e06289c/92548129803.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/355598d1-c50a-4c8b-bb2f-c235e94b682f/95321864120.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03f31e6b-87b3-44dc-a86c-3bd55e84d5b7/46593060224.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5bac2c03-9ae2-4374-8f10-6fcb51088352/morakimedudiwasa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6e52a22-697a-4eb4-850b-cdf8ed0836b8/ejercicios_de_estadistica_para_tercero_primaria.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 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d65e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD65E 5380 bytes
SHA-256: 1a1a440e5f99f73f84bf81fe45dadcadfadb190319d1e42cdeb784a241f3e9d7
font_01_sfnt_off0000e93d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE93D 5360 bytes
SHA-256: d608b4f9487170e9f42d3b5936b138a8d202b72d5da5b01c8f71d0f4ad147c33
font_02_sfnt_off0000fb69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB69 3612 bytes
SHA-256: 87c8d62cb87067ed5b42f953e232071221cdef524b3740eb42cf243c3048c10b
font_03_sfnt_off0001091f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1091F 12712 bytes
SHA-256: 2d4d9f3a39a29cda465c01cb0cd99582bfd6bc85d3394725b244c89e41e147b2
font_04_sfnt_off0001332a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1332A 16796 bytes
SHA-256: b29368c3130946b71bdb284ddd1a5b0e68b7cffebd312ce3a3e29d47ebf2cb0d
font_05_sfnt_off00014b04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14B04 3800 bytes
SHA-256: 131df696c818988d7a37fbee3178455d2611fded26eca766d0b162f6973713a5