Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba922732312c1f37…

MALICIOUS

PDF

76.4 KB Created: 2021-02-28 03:33:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: d427b2c77344c16fa5efd49175954a49 SHA-1: 80e28d36abc4bc6eecdd5e77f534545d11ee7880 SHA-256: ba922732312c1f371ded9d19587056705707c75321a4d3d3fa9f3bf5084105d3
96 Risk Score

Malware Insights

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

The file is a PDF containing an embedded URL that leads to a suspicious domain, identified as malicious by ClamAV and ML classifiers. The document body, though heavily obfuscated, contains text that appears to be a lure. The presence of an external URI suggests an attempt to redirect the user to a malicious site, likely for phishing or malware delivery.

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://leonvi.ru/strik?utm_term=mr+nuts+and+mr+balls PDF link annotation
    • http://xejopegig.mypressonline.com/bissell_little_green_machine_replacement_hose.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459941/normal_5fc571188c625.pdfIn PDF document text
    • http://drive4mclaneaustell.com/544652387670f3q1.pdfIn PDF document text
    • http://fanisore.sportsontheweb.net/newisit.pdfIn PDF document text
    • http://hydra.moscow/google_sheets_importrange_vlookupz1j2h.pdfIn PDF document text
    • http://betijeduw.getenjoyment.net/30039107829.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/galinikagopit/asus_android_bootloader_interface.pdfIn PDF document text
    • https://s3.amazonaws.com/jovekus/24702645106.pdfIn PDF document text
    • https://s3.amazonaws.com/tigovatolis/94798118053.pdfIn PDF document text
    • https://s3.amazonaws.com/xoxaneral/32970152114.pdfIn PDF document text
    • http://desejole.myartsonline.com/wd_my_cloud_storage_4tb.pdfIn PDF document text
    • https://s3.amazonaws.com/xukanomarexumu/39287435102.pdfIn PDF document text
    • http://pelebirepopo.onlinewebshop.net/2007_6.0_powerstroke_turbo_back_exhaust.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d329.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD329 5116 bytes
SHA-256: c81e9dd294815f0f365195fc87f0e890772bb68977c170330a1c2688afc5b857
font_01_sfnt_off0000e47d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE47D 10644 bytes
SHA-256: e2a28983a3829bd69376bb76bcc8056a69ff7159a4411db950c23a6a12a147f3
font_02_sfnt_off0001092a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1092A 18012 bytes
SHA-256: f2f08ff580c9c509091eb8be77451aac8857bfc3f4258dea24d8e785c2ccbbff