Malicious PDF — malware analysis report

Static analysis result for SHA-256 8640e524fcbd6b64…

MALICIOUS

PDF

60.2 KB Created: 2020-12-01 15:38:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 85d6c240a374f6156a61193cb3908992 SHA-1: 929648dafb66bc2caffb69e723d174439d2c08ab SHA-256: 8640e524fcbd6b64e8d18c90eda33ceb904874e8f3d9b6af3ea5b742e72a59a3
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9995

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://trafffe.ru/123?utm_term=venus+corps+worksheet+for+calculating PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4374715/normal_5f895fb964bdb.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/muvemasoxaji/2012_audi_s5_manual_for_sale.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcfa1fedabee7b4407371a/1606220319638/25677568721.pdfIn PDF document text
    • https://s3.amazonaws.com/jejulurowev/dell_latitude_5490_datasheet.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4d725147b14804298c71/1606372727715/universidades_de_washington_d_c.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisigetizoxif/iron_deficiency_anemia_thesis.pdfIn PDF document text
    • https://s3.amazonaws.com/kezemiradigu/tabedudekitavutirifowud.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe33fc3f75b166439fe9af/1606300674282/la_crosse_wifi_projection_alarm_clock_setup.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/91189297268.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe15fae6d49a06bb594ff3/1606292986687/49287484484.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0ed4f1452f90b7fe57e24/t/5fc185fe7acac6192afa841f/1606518270985/54603663748.pdfIn PDF document text
    • https://s3.amazonaws.com/jadudusujuje/when_is_disneyland_grad_night_2020.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_off0000afb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAFB4 5396 bytes
SHA-256: d389821a7f70eac0c0373c72ca4502cbb7e3bdee7885b04912e07be283d2533e
font_01_sfnt_off0000c227.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC227 9888 bytes
SHA-256: 987ef1f343c0cdc6b67cdb6a67034f3938190bc68fe5b05efbc5ede065e83f68

Open this report in the interactive analyzer, or submit your own file for analysis.