Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca411be2aff476bc…

MALICIOUS

PDF

75.5 KB Created: 2020-12-25 20:14:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: f191687d433a83fafa7fd6778b72f45e SHA-1: 9b5523e20824831d71d86fba0eef475c8c6b308f SHA-256: ca411be2aff476bc7e173dcf5e85c48791093e90a99a2cfeac04038e978114a8
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URL pointing to 'traffking.ru', which is likely used to deliver a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to SharePoint and Excel, aligning with common phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffking.ru/aws?utm_term=create+list+in+sharepoint+from+excel+spreadsheet PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4504791/normal_5fb9773b3315b.pdfIn PDF document text
    • https://jilukixewe.weebly.com/uploads/1/3/4/0/134042659/vuzef_gebusezol.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464523/normal_5fbd457d81eea.pdfIn PDF document text
    • https://joxenawofin.weebly.com/uploads/1/3/4/3/134342561/xutozas.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385647/normal_5fe4e8dcd8a02.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366661/normal_5f8840fc18c22.pdfIn PDF document text
    • https://levevuwakute.weebly.com/uploads/1/3/4/9/134904524/pupemivov_xuxiseg_nevawes.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wefadep/sajuxibabojomunezip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63d349a7-9ce0-4ef8-945f-03d770f24eb6/gupodonitabaki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3f1472d-6f76-4a51-a477-43042ccf4fa0/7876680136.pdfIn PDF document text
    • https://s3.amazonaws.com/pozokimepe/fortnitemares_part_3_challenges_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/juliziwojatige/97951103159.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_off0000ea61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA61 5368 bytes
SHA-256: 6b7d366c86558bec6f3c2687c63eef1aa3b0103b9ae51b2981d250fc976266ac
font_01_sfnt_off0000fc76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC76 10716 bytes
SHA-256: b3e0aab92d497cef7dd4961f56a39b5c6632be92fa891ad96e965f9e65ed3f90