Malicious PDF — malware analysis report

Static analysis result for SHA-256 9670d80813ead028…

MALICIOUS

PDF

70.9 KB Created: 2020-11-13 09:43:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 50572efe420456bed9c569cbe81c4cf4 SHA-1: 9d340bbf978196ee221b047737439e39b43f4ee6 SHA-256: 9670d80813ead0288560a8c7356efb1acb87f345224f8db551ee518b400df00c
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://cctraff.ru/strik?utm_term=ai+r%25E1%25BB%2593i+c%25C5%25A9ng+kh%25C3%25A1c+h%25E1%25BB%2593+quang+hi%25E1%25BA%25BFu In PDF document text
    • https://cdn-cms.f-static.net/uploads/4379984/normal_5fa3692593fb9.pdfIn PDF document text
    • https://fotejisatowonu.weebly.com/uploads/1/3/2/3/132302873/xigizozumig_bojen_bevewariwaj_jevaxax.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409796/normal_5faa80039704c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450728/normal_5fa87f79848f3.pdfIn PDF document text
    • https://jiwedizuku.weebly.com/uploads/1/3/4/3/134310564/33dbc5513.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369334/normal_5fa8ae47f38f3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4394062/normal_5f9abbcab2c99.pdfIn PDF document text
    • https://nizesuvijeva.weebly.com/uploads/1/3/1/6/131607023/vilawedalote.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/5c7dfb84-b8af-4e8b-b3e7-6b5a0b784966/wuvepaba.pdfIn PDF document text
    • https://s3.amazonaws.com/rijaliwiguvex/lego_skull_island_instructions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe05c440-a977-473b-947f-5b72ddc94c11/transformers_list_of_autobots_and_de.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000be1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE1C 5368 bytes
SHA-256: e5bad232e32f5221d5af0eb311fbb4bce2e3faeec9bea170d0edc449e2838b5a
font_01_sfnt_off0000cf87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF87 21372 bytes
SHA-256: 13959288a87ba3a62b67a00b46463c271499e8438ab448645cf6f6a4608e4a78
font_02_sfnt_off0000fe9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE9A 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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