Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f559625efdf1f42…

MALICIOUS

PDF

70.0 KB Created: 2020-12-18 11:09:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 1d18f1ff6580631d053cf60115bfd612 SHA-1: 9b8b639be94944f72f64baa7f31e2dd6e1b91231 SHA-256: 8f559625efdf1f423ff1be3a4987e2cc62d8c665194fcabc81007d35c52fd7ff
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, which is likely used for phishing or to download a secondary payload. The document's metadata and body also contain references to this URL, reinforcing the phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffnew.ru/123?utm_term=the+negro+mother+langston+hughes PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366400/normal_5f87a446d01ae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480598/normal_5fbe892eb32ee.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc5a3c8ab79f442f249d338/t/5fca17ad41142a3c4b45e1e6/1607079853884/kobewonivemepedutakav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a4fc68c-5245-43a1-bbb9-80589920e718/tk_maxx_spain_valencia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bcaa2ab7-f734-480e-9747-cdd95f5f7714/18433858330.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41536734-9d86-4d78-99af-123cb7d34a43/kujuf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66efcde6-a480-4698-b6f7-90e0edd9723f/expresion_y_apreciacion_artistica_ju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6245127a-e969-40b1-b228-04cba3d28c6d/sahuarita_high_school_enrollment.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1bff2594-023f-4604-b075-8f250fc075da/mab_graves_real_name.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96943b6d-5fb5-48f8-8b00-ea6fe19a177d/soda_dungeon_poison_shroom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5efd7ac8-a478-4235-bf7c-f520440266e7/first_quarter_storm.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82f0e5ad-557d-4823-a82e-7deae31edcc4/the_alchemyst_michael_scott.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f38c69b4-767f-49dd-b3dd-b8e17b33dc01/3110492520.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2aad3ab79f442f234ede7/t/5fcc83926f0099009e5d100e/1607238547330/tekonav.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_off0000d16b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD16B 5048 bytes
SHA-256: f4589b1f35e112e1e67bcc981d4a0d52c0bca2a77e23ee3e3aca3d183330490e
font_01_sfnt_off0000e267.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE267 11696 bytes
SHA-256: 96057a29e0d372ee1361290572097cdb88e1b7215d06009e1013cd20293af563

Open this report in the interactive analyzer, or submit your own file for analysis.