Malicious PDF — malware analysis report

Static analysis result for SHA-256 115fb8a645c67f6b…

MALICIOUS

PDF

65.5 KB Created: 2020-12-03 12:32:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 7d74987a2807fff72efc03c17055ab79 SHA-1: 960dd4f06d15842eb4d116a20bd1eec03ffea096 SHA-256: 115fb8a645c67f6bf470d9895cfeb31d8d533ac245dbda8c68c5d57996ad8d6c
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://traffnew.ru/123?utm_term=welcome+meme+funny PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/38f047ef-8667-4b12-b610-adc48b4a4fb2/64212445835.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0b4e4c89e1c4b8fbd626a/t/5fc1ef7e173fb5383be81d42/1606545280463/6356763655.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7540b8bc-cc81-4574-97d4-dd57b1ebf047/58323450152.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd158af6f5f91feb7033cc/1606227339928/pawuborevowopaja.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf6c2e18e72e5fdbd04ce1/1606380596547/69324971180.pdfIn PDF document text
    • https://s3.amazonaws.com/gomakobez/aceable_parent_taught_drivers_ed_answers.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf52f8145a8629dca7c05e/1606374137971/sonography_near_me_lady_doctor.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0c3cd92c50b1a1e76da16/t/5fc4e6509b1ed0353876b5d4/1606739537711/81287163529.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4d1c52cf09257bd84ca4b/t/5fc78f6c5fecd2174b632f47/1606913901843/cartoon_sounds_mp3_download.pdfIn PDF document text
    • https://s3.amazonaws.com/wobuzisibal/advocacy_journalism.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/refraction_of_light_in_lenses.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_off0000c700.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC700 4656 bytes
SHA-256: b2399f73d86e571d89b8b0cd214a9d65f0f9d3e2a305c690e427ed590ddc1106
font_01_sfnt_off0000d6e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6E6 10224 bytes
SHA-256: 4641c5c7f4bd461d5d1d1d78bc7885ec90c00e91962c06e3b504ebc65040a922