Malicious PDF — malware analysis report

Static analysis result for SHA-256 0584e635c5d478bf…

MALICIOUS

PDF

84.0 KB Created: 2020-11-16 21:50:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 763f5118af4df058bc650785f554e6d4 SHA-1: 2b1a4e690374a0a6bc9dc01fbc8397bb5e845d6f SHA-256: 0584e635c5d478bf70fe079f40c7772a7c67b30e08f59574e7e12699d1de7eb3
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/123?utm_term=self+reliance+and+nature+worksheet In PDF document text
    • https://cdn-cms.f-static.net/uploads/4402262/normal_5fab342f036c4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500201/normal_5fac4008e125b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372384/normal_5f998b1955926.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404503/normal_5faa02c1f0c35.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373516/normal_5f95aa8078463.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369158/normal_5f95259836734.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/dovulavavo/kadoduxujix.pdfIn PDF document text
    • https://s3.amazonaws.com/bitajemisajoz/31205619326.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5c082ef-c43d-4e5b-97ac-fe03fac852d6/princess_lideta_zera_yacob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/099bfa32-4b00-46c8-89b5-dd3bc0b36058/20198921163.pdfIn PDF document text
    • https://s3.amazonaws.com/womirofop/76874736606.pdfIn PDF document text
    • https://s3.amazonaws.com/dejolavubukugeb/translate_to_spanish_fat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b03ec8fd-3e6b-4398-8b34-f9537e9e1bea/tiper.pdfIn PDF document text
    • https://s3.amazonaws.com/mizeteb/tifetetenelutopumadaw.pdfIn PDF document text
    • http://www.readwritethink.org/classroom-resources/lesson-plans/examining-transcendentalism-through-pIn 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f64d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF64D 5368 bytes
SHA-256: 6d39e789f5d03d400a22ce0a0f063e9ebbf8eadfa82047c1cd01b3aca8730764
font_01_sfnt_off0001089e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1089E 10836 bytes
SHA-256: 4616415e763b19670c4d84251b66d7469ef1ba396e43b49f5bb0890238e85256
font_02_sfnt_off00012dc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DC7 16176 bytes
SHA-256: fb09c764af2da29dcd1400a6d7077e59cbae054cb92185a2e15c15daf89e4388

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