Malicious PDF — malware analysis report

Static analysis result for SHA-256 33392c7cac8946b2…

MALICIOUS

PDF

69.4 KB Created: 2021-03-01 11:13:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 09b130f2ef9e22d2cdf8d840a0c96ba5 SHA-1: 02a9ab07b3fca58349999f98c6d9df95471e46ca SHA-256: 33392c7cac8946b2c576faccad7f33c83a94e666e45721080fb46153b9edc93a
96 Risk Score

Malware Insights

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

The file is a PDF document detected as malicious by ClamAV and an ML classifier. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, appears to contain product-related keywords, suggesting a lure to entice clicks on the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/award?keyword=weber+grill+cover+genesis+ii+e-310 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4370054/normal_600885b0ab6c7.pdfIn PDF document text
    • https://vedakevuvapi.weebly.com/uploads/1/3/4/0/134013486/sivakegipidorusad.pdfIn PDF document text
    • https://mufajagirudul.weebly.com/uploads/1/3/1/4/131452858/9f43c7f8f253.pdfIn PDF document text
    • http://naturagrush.space/popexupanetupugasagyvcdo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455176/normal_5fe26431bfe1e.pdfIn PDF document text
    • http://cooldomen.space/84704842951hiuoq.pdfIn PDF document text
    • https://wunovolal.weebly.com/uploads/1/3/5/3/135311751/545f613d3aabc.pdfIn PDF document text
    • http://creditscorerepair.info/48906749250sc695.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411001/normal_6035f157579a7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471464/normal_601ba89b5225f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403260/normal_601c71a5b14b7.pdfIn PDF document text
    • http://cardioactiveitalia.site/bad_grandpa_full_movie_download_in_hindi_dubbed5om4m.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/simujix/xovoti.pdfIn PDF document text
    • https://s3.amazonaws.com/numegubowalonan/21337054072.pdfIn PDF document text
    • https://s3.amazonaws.com/kisimujuk/kala_bhairava_video_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/busutafitufe/pbs_frontline_podcast.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_off0000cf33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF33 5360 bytes
SHA-256: 00466f36593d0ba7ad45e6ecb8de639d682df8567f9b7eb4ef26b4e304ba962b
font_01_sfnt_off0000e1a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1A6 11104 bytes
SHA-256: a6e1c1758f6a68f97b708ae1230cebdd818b4c43fca23da11d1af1dc03f7e079

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