Malicious PDF — malware analysis report

Static analysis result for SHA-256 02a49683beef6bc3…

MALICIOUS

PDF

71.8 KB Created: 2020-12-20 23:39:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: dd46df718558b27b4b21316ac82317c8 SHA-1: b639c108c1409815c57062517673d1c3777db7e0 SHA-256: 02a49683beef6bc34cc0014b5275df4e867bf3b147ca726974da6d0bf1320bd2
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a critical heuristic firing for Pdf.Phishing.Trojan. An embedded URI points to a suspicious domain, suggesting a phishing or malware distribution attempt. No scripts were extracted, but the PDF structure and embedded URI indicate a malicious intent to redirect the user.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/123?utm_term=d%2526d+tremorsense+5e PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369516/normal_5f8b2b743539b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378606/normal_5f968609563f1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450440/normal_5f9f046c9391b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412151/normal_5f93fc2b61a6e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471704/normal_5fa780c08aab7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447098/normal_5fca2825cef26.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/susopuzupure/national_action_plan_points.pdfIn PDF document text
    • https://s3.amazonaws.com/sanekufiwumafo/que_son_cualidades_de_una_persona.pdfIn PDF document text
    • https://s3.amazonaws.com/zesotat/tokoliburugitoxi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e53bdf2f-9b70-46ac-99e8-1828f788e911/trader_joes_argan_oil_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6e948e6-9a6b-44b5-bd4b-ce1368460bf7/1692363885.pdfIn PDF document text
    • https://s3.amazonaws.com/sagotomagin/adobe_creative_cloud_cleaner_tool._exe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b252feaa-0895-41dd-8d63-838cc22d8ca2/apache_flink_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2fc4cccf-741b-492e-96a4-f464e31d2178/stormblood_pre_order_bonus.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_off0000e0d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0D7 4156 bytes
SHA-256: bb1702a9e9b617346157f9ea6f36cc14559c37d4a4a2cf683ebd57dce9d2c082
font_01_sfnt_off0000ef06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF06 10536 bytes
SHA-256: f978fb1db30b13d9cfce78c5580d2478d0c62348ec65974b9834e682fbdd7fb5