Malicious PDF — malware analysis report

Static analysis result for SHA-256 e69904944e3e8be8…

MALICIOUS

PDF

62.1 KB Created: 2020-11-26 04:57:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 3bbb2becc94f73d9d29accee2b13fdae SHA-1: 15e7870d2393d994fde57e2fd9c25c78d7b4b289 SHA-256: e69904944e3e8be8321854a23c01e59ff97d83aa4cc0533df4de1fa4550ae4b0
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that leads to a suspicious domain, identified by heuristics and a machine learning classifier as malicious. The document body, though heavily obfuscated, appears to reference a luxury cream product, likely as a lure. No scripts were extracted, but the presence of an external URI and the ML/ClamAV detections strongly indicate a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://trafffe.ru/strik?utm_term=la+prairie+skin+caviar+luxe+cream PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4388289/normal_5fb82a0e4e578.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423772/normal_5fbbc11a558e7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382613/normal_5f8fc35771461.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492573/normal_5faecba0958c7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459324/normal_5fb4e457b5211.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368223/normal_5fa002197fc58.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/8eba6b6d-e7e6-482f-ada0-8e3d6ead5edc/how_to_get_to_cinnabar_island_gym.pdfIn PDF document text
    • https://s3.amazonaws.com/nisoxow/attack_of_mumbai_26_11_full_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/sanekufiwumafo/google_certified_educator_test_platform.pdfIn PDF document text
    • https://s3.amazonaws.com/kalanejaxutilif/gorakitunerewif.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabisura/patofisiologi_rheumatoid_arthritis_adalah.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/vafibupazosorisorapo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50c0caba-f2b1-412d-bfaf-1d7bb8aad093/alphabet_sequencing_worksheets_free_printable.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_off0000b635.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB635 5212 bytes
SHA-256: 78f5ed173c23a1b0ce91b95f9ee87de4adeabaca25f472c5fe1029cc55f3d293
font_01_sfnt_off0000c7f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7F0 10560 bytes
SHA-256: 7af02eadd77b08e72040901015338d2469ef1d92f34227ae9dadcc3ebe32627e

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