Malicious PDF — malware analysis report

Static analysis result for SHA-256 df4f22cb323a4dce…

MALICIOUS

PDF

69.0 KB Created: 2020-12-20 06:25:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 43723ead019f02510e3002e0004514d1 SHA-1: b819edadab9e41fd20d5091f282838af01856631 SHA-256: df4f22cb323a4dce42b1b5e9eccbf08f24563496b146f5c5dc7fb8c7d9a7d82a
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 0.9998

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
  • 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://traffmen.ru/strik?utm_term=right+triangle+trig+answers In PDF document text
    • https://static.s123-cdn-static.com/uploads/4417537/normal_5fc5d37dd15d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450003/normal_5f9f16452f408.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421039/normal_5fc1575654ac5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384820/normal_5fa581ca98654.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453326/normal_5fdb0b634e6ee.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/kabisebax/sigma_509_bicycle_computer_manual.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5c4d3c30a162e0c73ef94/t/5fd167d1871f8c6e594f963f/1607559124770/automatic_photo_background_change_software_online.pdfIn PDF document text
    • https://s3.amazonaws.com/tokudapele/vagabijujebaxafaval.pdfIn PDF document text
    • https://s3.amazonaws.com/xewamejixolefaj/smart_voice_recorder_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/jenisozazewubo/luwasebewaxutazolole.pdfIn PDF document text
    • https://s3.amazonaws.com/fonazuzixagizir/selujafejowufumoliniwe.pdfIn PDF document text
    • https://s3.amazonaws.com/xedewofuretujo/firefox_old_version_51.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0dfe77d0c8f249d40ab54/t/5fc11403cb3e0f577175b349/1606489092185/susix.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_off0000d13e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD13E 5044 bytes
SHA-256: 86b889a3b76173c40d02591013e4776f78bdf57624b940e72fb70013d4d4a5f2
font_01_sfnt_off0000e276.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE276 10284 bytes
SHA-256: c1b988500688e8bab631c1034474241057fbe7067673f95b8c53d9d834615a92

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