Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed483d82530c22ae…

MALICIOUS

PDF

79.8 KB Created: 2020-12-08 07:46:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 8535bbabcb3bda303367b0d5e457dd03 SHA-1: 6d44e4bb10879ebeaa18ae1b465c440d87a304ee SHA-256: ed483d82530c22aec3bb40341457b900640b3dc29e6a3cb78a84c250af6fcd8c
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 0.9995

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://trafffe.ru/123?utm_term=mathematical+notation+a+guide+for+engineers+and+scientists+pdf PDF link annotation
    • https://vaferomesab.weebly.com/uploads/1/3/4/3/134351928/0c62e155a0bc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365661/normal_5f86f87aee7d4.pdfIn PDF document text
    • https://nolalitikobuno.weebly.com/uploads/1/3/4/7/134768790/tozejixew-faluronanomur-felujepa-zojuzuxuwagerox.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385636/normal_5fcac9ad6051b.pdfIn PDF document text
    • https://ranalugepileli.weebly.com/uploads/1/3/4/7/134735155/gororipaxamukalo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368251/normal_5f9d01711224b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408346/normal_5f9a800075f42.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/62bbd7a0-59ba-4514-a511-8e5345ce2153/34257167223.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc527e6403f5353fdb14542/t/5fcb3cb56e74d26c6ffbf7f4/1607154870745/classworks_hoke_county.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48e11bf8-d0a9-42a2-b2cd-0198d222ee4d/93962911107.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_off0000f7fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7FB 5572 bytes
SHA-256: d419a37c0d01c97ac74131affbac8c8140f4ab6d1610a17fef96ee9d78751b0f
font_01_sfnt_off00010ad6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AD6 11708 bytes
SHA-256: 645296b8cd09ebb593b988563e5b27cb9b713bb7d14daca36556e78986e32c35