Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a9b31662b365ca2…

MALICIOUS

PDF

75.4 KB Created: 2020-12-26 13:51:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 3385d93240bcf460262f7e5dbc40f4ad SHA-1: ef563b4ccbf74795abdb2dfdd05e9413baffca41 SHA-256: 3a9b31662b365ca2ba7a7f79cd8f08dc8968d57bc618fd984129122c992e37af
154 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link that is disguised as a passport application form. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded URL is a known malicious redirector, likely leading to a phishing page or further malware download.

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://traffking.ru/aws?utm_term=e+passport+application+form+uganda In PDF document text
    • https://cdn.sqhk.co/boxokozofe/ijPkZhj/dasofuwivo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373511/normal_5f8d62b33340f.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/dojonuta/honda_outboard_performance_bulletins.pdfIn PDF document text
    • https://s3.amazonaws.com/jarirotexab/oatey_pvc_cement_msds.pdfIn PDF document text
    • https://s3.amazonaws.com/xomepixo/short_english_story_books_free.pdfIn PDF document text
    • https://s3.amazonaws.com/gavexilatuvitaz/xorexuvinebunafunelo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51211a6b-ad3e-4682-93a4-3a42b3e41986/a_chinese_odyssey_part_two_cinderella_english_subtitle.pdfIn PDF document text
    • https://s3.amazonaws.com/rizezobabub/lucius_game_parents_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57fc50d5-ba47-49dd-b226-1b8238fff88c/backyard_grill_wireless_grilling_thermometer_instructions.pdfIn PDF document text
    • https://s3.amazonaws.com/legenapi/46880387911.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4105d450-fc3f-4329-a698-7c7f6c3ebca6/85714257029.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4d40d18-dbf5-4c8c-88fa-8e72af327dd8/anjaana_anjaani_movie_download_mp4.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_off0000e979.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE979 5432 bytes
SHA-256: a68ce9bcc15bc2e3b6bb1a6c9f4ba0dcce296598e3ac860a908902877d44ff5c
font_01_sfnt_off0000fbdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBDD 10852 bytes
SHA-256: 07aaca213eb389c554a652ae49386c23dee35e475f2adc90a9f3a09e1bb92774

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