Malicious PDF — malware analysis report

Static analysis result for SHA-256 32dc37c30aea78a1…

MALICIOUS

PDF

62.9 KB Created: 2020-11-25 11:56:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 60e1ee76ea9c2040325515387b946af9 SHA-1: e9ecc82800299707c696b139e2e6055ae0c94401 SHA-256: 32dc37c30aea78a1f813dd620252ad216263a6d24ce9c7b3f3ee788bc9f8c096
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 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafffi.ru/strik?utm_term=convert+mg+to+atomic+mass+units PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4416940/normal_5fbe2544354da.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4504788/normal_5fad87df1cc01.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/3ae4c889-51ac-4aa0-a37c-dce29cc5bff9/tagosutowunuxuv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/33035793-be5f-4ca3-82df-7b403cd50870/jozinoluduvedolukimoda.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/78bebca6-e73d-4680-bc4c-d7047efb3120/periodic_table_of_elements_color_coded.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/73ad7831-c6bd-45d9-8623-d9d1c8a1b096/10352987079.pdfIn PDF document text
    • https://s3.amazonaws.com/mamukawaxatali/vojapaxopafobefemigufabon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b875a7f9-23bf-484d-b286-a5c738651872/lesson_8.4_practice_a_geometry_answers_pages_480-487.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e76dc39a-120d-48f7-9191-053f79806ad4/juvef.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20aacad3-fc4c-46ed-8887-7b33d40f0804/winolaparebizuxewapejo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a16fe50-5feb-4c5b-b73c-e9c7373fc84d/teoria_del_delito_eduardo_lopez_betancourt.pdfIn PDF document text
    • https://s3.amazonaws.com/savukojubusum/90482505819.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.

FilenameKindSourceSize
font_00_sfnt_off0000b8fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB8FE 5052 bytes
SHA-256: abfd8f8a430be0ccdba9242d009f877cc51545cba538f124f147f4a022796e61
font_01_sfnt_off0000ca1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA1B 11128 bytes
SHA-256: 4a0bc69ba9437bb1f9a3fdc70a2e686e8a8bef8777f9ba551c94805b92885540