Malicious PDF — malware analysis report

Static analysis result for SHA-256 9470b0c9d9108b91…

MALICIOUS

PDF

73.1 KB Created: 2020-12-17 05:46:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 8957f83326c5d17255048bcdcc38590e SHA-1: bcbde5d154399c1545c4123a9feb55a181e5c5d9 SHA-256: 9470b0c9d9108b917ab265dac83337c2edbead21172afc0e5b6873e01c576e10
154 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 routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://gettraff.ru/strik?utm_term=big+bang+pegasus+ebay In PDF document text
    • https://cdn-cms.f-static.net/uploads/4462341/normal_5fa1a8836e1ab.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/bizamesuwepe/barack_obama_quotes_education.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b74c3c34-1399-4bbf-9350-ec437dc6fd1e/dr_spock_baby_and_child_care_9th_edi.pdfIn PDF document text
    • https://s3.amazonaws.com/wibadinavosunom/jejojapu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5a3e840f1034a5cc929d3/t/5fd1d32bac13f65f661518a4/1607586611873/tuxavatixitozekadira.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf5518bc8713fe6fd0c38/1606219090829/janajoviwa.pdfIn PDF document text
    • https://s3.amazonaws.com/wewuxuviwar/jugozejuwimowovosu.pdfIn PDF document text
    • https://s3.amazonaws.com/jenisozazewubo/83442991826.pdfIn PDF document text
    • https://s3.amazonaws.com/numunenoji/spanish_grammar_eric_v_greenfield.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1d9757848ba205d1f35f1/t/5fcc498e33187724c4e65c8f/1607223694445/navifewavexonusiv.pdfIn PDF document text
    • https://s3.amazonaws.com/bezegoluzose/suvoboketob.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/antenna_types_in_satellite_communication.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_off0000e18f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE18F 5152 bytes
SHA-256: d36e238b10c80b17638735da9e139551d02412d9a1d93e94859bcb779df978ee
font_01_sfnt_off0000f33a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF33A 10600 bytes
SHA-256: 2ab066f942d0b26f8ff9c1026c54d42ee93312a62cb14430b05eb96282d33361

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