Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a169250dfcce794…

MALICIOUS

PDF

72.8 KB Created: 2020-12-16 22:52:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 56d2987448d0abf401f3e8a60da0d145 SHA-1: b93c6e0d764186a659e7932cbe736b06e9f17b75 SHA-256: 3a169250dfcce794839c5daf0d3ad1b0a44636123a8e4849b8c1918e8744cf72
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains embedded URLs that redirect to known malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though partially corrupted, suggests a lure related to job postings, aligning with phishing tactics. The ML classifier and ClamAV detection further confirm the malicious nature of the file, likely serving as a phishing document to redirect users to malicious sites.

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://traffking.ru/123?utm_term=puestos+de+trabajo+en+un+hotel In PDF document text
    • https://xijoxamapapi.weebly.com/uploads/1/3/4/3/134337958/somavaliratat_fasozemu_jinonejekavegu_kezagozuvow.pdfIn PDF document text
    • https://voxapinave.weebly.com/uploads/1/3/2/7/132740917/4221391.pdfIn PDF document text
    • https://zuxubemusaf.weebly.com/uploads/1/3/1/4/131453996/fanuf.pdfIn PDF document text
    • https://tuvekowemenizog.weebly.com/uploads/1/3/4/3/134350361/gegijotodefubal.pdfIn PDF document text
    • https://wobusaxumezi.weebly.com/uploads/1/3/4/8/134881220/3498555.pdfIn PDF document text
    • https://nadunala.weebly.com/uploads/1/3/4/8/134877180/96e6e10bf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/243607f7-9e24-4c65-ab32-b7bac1e695ee/19212628615.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc28ce3085bf90c0e07a8cb/t/5fd228f587bef85997f7ed86/1607608566082/4249856022.pdfIn PDF document text
    • https://s3.amazonaws.com/vuraradaso/balixitebikopikinukixet.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdf98f4e98326c02d5f678/1606285712225/nilogatujoxikalavave.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0ed4f1452f90b7fe57e24/t/5fc0f980f3de5e49b587226f/1606482304108/banajisop.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6a41824b06a7eb327987d/t/5fd6571596ed101a3e3e7e53/1607882518071/grammar_practice_worksheets_high_school.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77555022-5947-49c1-a358-12c7463b5b20/pageant_wagons_medieval_theatre.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1d4aac30a162e0c590d7d/t/5fcd44860ab5d62febffef3d/1607287943025/ionic_element_style.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fce984ae57e2d6c64338818/t/5fd0c735ab2d482295e66bff/1607518007593/construction_project_management_methodology_examples.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f2f6c89e1c4b8fbea157/t/5fc3b0fdcb3e0f5771c0c834/1606660350408/88093250074.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_off0000dda8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDA8 5132 bytes
SHA-256: cabca9aa81c4043ee8073baefc87116069fbe2745752bf1795bcad7488cdd442
font_01_sfnt_off0000ef10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF10 11608 bytes
SHA-256: 573bbb5ab0ed8f3e461b813eac443d164dacfde9c0b4e52fede1678eaf18756e

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