Malicious PDF — malware analysis report

Static analysis result for SHA-256 27dd58807c94e61c…

MALICIOUS

PDF

66.8 KB Created: 2021-01-03 07:40:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 69f7d24a5365d8e533ed4420afe65f60 SHA-1: ebe78297ff74f0386dacef0ceba9e62322ba8cd8 SHA-256: 27dd58807c94e61cd7e43decc6b3464167f3380d11d068263c77c5cd3d570f04
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, and a high ML classifier score along with ClamAV detection indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to a product search, likely to trick users into clicking the malicious link.

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=euro+pro+toaster+oven+black PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4464995/normal_5fecbe05b05e2.pdfIn PDF document text
    • https://zabaparadasikid.weebly.com/uploads/1/3/4/3/134317604/walidawujofitam-gerajawaredenuk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454803/normal_5fd072017c5b5.pdfIn PDF document text
    • https://cdn.sqhk.co/kedilexele/jaJ4Dhg/walmart_home_delivery_pharmacy_prices.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387699/normal_5fc3bc373d0ac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368964/normal_5f8ae93ad372c.pdfIn PDF document text
    • https://cdn.sqhk.co/zupisopad/hiCEhj7/giant_robot_cartoon_90s.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424632/normal_5f9f3a9e0e4c1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/6e80c02d-f6c7-4eff-8c79-1c13c88a87dd/virmax_diabetes_reviews.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d92e23c-038a-404f-b405-bdf900453dce/70820695176.pdfIn PDF document text
    • https://s3.amazonaws.com/geradi/powerpoint_hierarchy_template.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bdcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDCF 4980 bytes
SHA-256: b69d40ad8c299f4cbbbf9fe242f1915c33b8893bd07bebdbe78dc5d277497525
font_01_sfnt_off0000ced2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCED2 9724 bytes
SHA-256: 06d07982e790fbeff57af84901477be4a0544c48e60bc0cb1b64d2d34f8b353e
font_02_sfnt_off0000f01a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF01A 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34