Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f0a0f48cd27fdb6…

MALICIOUS

PDF

67.3 KB Created: 2020-12-08 18:48:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 0d524d06037cb202157aaa8745348ac2 SHA-1: dabbac0d3e08bab3859a60cdebbeb92cabfd56aa SHA-256: 9f0a0f48cd27fdb66b4b229a6c0c32ffb4e32822ad8802627b9b4ab801e67a03
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-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/123?utm_term=go+math+grade+3+chapter+2+extra+practice+answers In PDF document text
    • https://cdn-cms.f-static.net/uploads/4393044/normal_5fa0853d59949.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/muxozuvalubi/jojuzegunonedewozukifo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31e0e7b9-6adb-4d10-a478-6d592ee26de2/nidoxurazu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc11f477848ba205d19dcca/t/5fcf7bedba7003536ead10e9/1607433197766/20776733027.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5529df7cf8c7540481feb/t/5fc81ec7b0f45b2a3d18e217/1606950601925/mulexipuwirugofimoso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9904fef1-80fa-48f2-bc9c-564d07a9c159/85405479691.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d42c3fe1-f6f3-47cf-a6b4-03d76e15d3f0/new_york_coffee_guide_2012.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50fed076-a475-49d4-aa7c-d9f055d7d3f7/framaroot_1.9_1_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d387d86-f235-4753-88a3-c13fa3b96f44/xupagomo.pdfIn PDF document text
    • https://s3.amazonaws.com/wuzalugiseto/present_tense_worksheet_grade_4.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82125d91-8095-4e8f-859a-c785bc1aabb2/cumulative_review_chapters_1_10_answers_algebra_1.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_off0000c6e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6E0 5940 bytes
SHA-256: 0d70c749b6520e405af20cf54276f9ae7dfcbacdd819b2993ef011181e021457
font_01_sfnt_off0000db08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB08 11020 bytes
SHA-256: 8d7071d95fb7909803675a1afd5d6342ac271ceb748e208453c255e6471b65cc

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