Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd1bda07c8f57bc3…

MALICIOUS

PDF

82.0 KB Created: 2020-12-18 01:54:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 41b22891bd4f3a4480891ee36e367b12 SHA-1: 8e89641c72c190929f3e6fe26f34326a52933af4 SHA-256: dd1bda07c8f57bc3bac143183b16623110490b75fde530fec1cef862c05a2ca7
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier returned a high probability of maliciousness. The embedded URL points to a suspicious domain, likely serving a malicious payload or phishing content. The document body, though heavily obfuscated, contains text related to 'Music paradise pro old version', suggesting a lure to trick users into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://traffset.ru/strik?utm_term=music+paradise+pro+old+version PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4387427/normal_5fa56836bde22.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421339/normal_5f9ba77317499.pdfIn PDF document text
    • https://zazowabuk.weebly.com/uploads/1/3/4/6/134641257/5386862.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472776/normal_5fa4bf8ed26c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445326/normal_5fae34f183b8e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/bams_final_year_syllabus_download.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5dc63f7cf8c75404cc06f/t/5fc8b0d94b97230d0512f18c/1606987997017/rididagafitov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0bd466a2-e590-4677-88ab-2e07a2ef150d/42760913576.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87316999-3c63-4f24-bd72-0873c6166377/vubabofugof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3fa33813-07fd-4673-9c21-5571392dac59/baluxivokaraxoj.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fcf3d5fa1725102607b4313/t/5fd16e9c5e090321caa8089e/1607560862736/tagikekurunifisiveledajul.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc64e6c2e34347c70694bb4/t/5fd05a3012264b5dfdca0ffd/1607490098833/download_naval_storm_td_mod_apk.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://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cb8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB8C 3220 bytes
SHA-256: d79750bb2f20a3ba9bb930b6b4b31105ffbe3c34e59909da052283356c1a5161
font_01_sfnt_off0000d702.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD702 5132 bytes
SHA-256: 1db56c35e5d93f90e746e2a556658860ebc9f4220e73d0884da74a8f8f998830
font_02_sfnt_off0000e88d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE88D 5672 bytes
SHA-256: dbfa5413c1a9c227ff4952054b5b0b4ac96982f99bb483e8315c477d4481d2cf
font_03_sfnt_off0000f69c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF69C 10320 bytes
SHA-256: 507a8b3f6092f82a5f8d3d97a6e40a1a66880e6496e03a5b289a285a436dc271
font_04_sfnt_off00011a08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A08 19864 bytes
SHA-256: c99ab1c9d827599e98c5cae41973ef9f58c79d59d8076656e291b9adbb2464a2

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