Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f2df773f381d430…

MALICIOUS

PDF

69.3 KB Created: 2020-11-10 07:58:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: d3c88d17018df125847a06a53bffd84d SHA-1: bfca3457a7ada213adc501ae72056e29fe8679fb SHA-256: 2f2df773f381d4307331bdccb0c86c0400c9a2e65a55cc170f7a6cef537fa8a9
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. The document body contains a lure for a "free v buck generator 2020" which directs the user to a suspicious URL. This indicates a phishing attempt designed to trick users into visiting a malicious site.

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://trafficel.ru/strik?keyword=free+v+buck+generator+2020 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4373508/normal_5f88bc9794fa2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366306/normal_5f8828322eefc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389581/normal_5f8f337be9872.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388037/normal_5f9bd59540908.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415767/normal_5f99f59b9fc82.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418567/normal_5f9ff66220a97.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/7407edce-d86f-43d4-a7b7-e0c063768fc2/65200800073.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd9e8ab8-8509-415b-9868-d59ed583efe7/taneluvesazukitasowopadap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1692b9c3-f812-450b-b236-edd9c8803004/pumujezotes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1712ef8c-de39-4642-b1da-81e7f1c8792f/57126622411.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc1c9f90-c11f-4874-8107-51d5c5bc84ea/lodubavizugisabibesezigot.pdfIn PDF document text
    • https://s3.amazonaws.com/dazifozixawus/34994427868.pdfIn PDF document text
    • https://s3.amazonaws.com/zerepuzuze/43271832746.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13a1b788-cc0f-410c-a258-c7ac8ec66a3c/gewigotobogonila.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_off0000d220.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD220 5248 bytes
SHA-256: f701be3390c9822be833b204dd5555cd61fb88d0d4f392c7b93361eb7015b414
font_01_sfnt_off0000e41f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE41F 10948 bytes
SHA-256: 7a2fb430507c457429f6461fa96b8b1038b5090ba088eb5c4b06153d64e3742b