Malicious PDF — malware analysis report

Static analysis result for SHA-256 f714bd0279269cf1…

MALICIOUS

PDF

66.1 KB Created: 2020-11-11 21:46:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: b42f1af0634351946ffae98ebfcde2a4 SHA-1: 24543e208ba9daee183a974bb546fd35ba104f37 SHA-256: f714bd0279269cf1c9143a501b394247ba72c1f2993e94dd657196b9e3ffa6fa
154 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 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://gettraff.ru/123?utm_term=leapfrog+toys+for+1+year+old In PDF document text
    • https://cdn-cms.f-static.net/uploads/4372085/normal_5f8c080b56fc5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370059/normal_5fa4370162e70.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/davawina/atresia_pulmonar_con_civ.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed9c3d71-7d11-4f1b-8323-8a807b61e956/xemorebifovijuwas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fdbb64dc-6fcd-4a0e-818a-b2600042e072/northland_family_planning_sterling_heights_mi.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/17237036534.pdfIn PDF document text
    • https://s3.amazonaws.com/pisedij/home_maintenance_for_dummies.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1e8f316-1e7d-4f9c-9a42-d0fe96d9449c/vupuxokozal.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwenoxuzasila/wugelarefepesutokev.pdfIn PDF document text
    • https://s3.amazonaws.com/jufowokedunod/the_sediment-_hosted_stratiform_copper_ore_system.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9de423a9-ef98-4d07-b9e6-6c283cf913d6/lazy_boy_parts_amazon.pdfIn PDF document text
    • https://s3.amazonaws.com/nuruvapozixix/40483678788.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_off0000c6b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6B5 5304 bytes
SHA-256: 49c5b50682b74f9f5e4fac15fd2232b676c81c429420b15d7fd1989a8e355804
font_01_sfnt_off0000d8e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8E4 10164 bytes
SHA-256: a23aba4e9cf6558b8e47bfa7e8a9627b78d7b72537146054a176e09b69bd0ad0