Malicious PDF — malware analysis report

Static analysis result for SHA-256 96f758beac3093b2…

MALICIOUS

PDF

82.0 KB Created: 2020-12-10 22:07:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 8adb72ce495926a8d5b37394db29af0f SHA-1: b1b4c8631bd853f776108c1916a2e10ae46b343a SHA-256: 96f758beac3093b275918e1c386a4ed10f26b9de8ec8cf5c0ae9de99b3cece63
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL that, when analyzed, appears to be part of a phishing lure related to 'Adblock chrome free windows 7'. The presence of this URL suggests the document is designed to redirect users to a potentially harmful site for further exploitation or information gathering.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffi.ru/wb?keyword=adblock%20chrome%20free%20%20windows%207%20%CE%B5%CE%BB%CE%BB%CE%B7%CE%BD%CE%B9%CE%BA%CE%B1 PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9934755-e6f4-4ee3-a6dc-7650779768b3/togisoniwidedederoteb.pdfIn PDF document text
    • https://s3.amazonaws.com/dogazisuze/psychology_101_study_guide_chapter_1.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/080b6a86-df0e-4723-b583-29599ae82103/bekeresobutesugasoxin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a09c2ed-f41c-4320-8d59-0390474cda6d/sims_mobile_apk_hub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/256af53f-644b-4d39-b8b0-a225c36975cc/survey_method.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2d5ce82-cc79-418a-b44f-24c7a74f8d07/running_horned_woman_tassili_najjer_algeria.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6be035a3-bcfc-44f6-9528-1d8342fa6950/39787731786.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5ed8c98-6ced-4811-8c0e-1f3ac3fd7d49/myers_psychology_for_ap_download.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc3624192c50b1a1e875bab/t/5fce48b26f0099009e9274bf/1607354546791/bijekebuwaveviguzilafobew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/334f74e1-d7e1-4c97-ae8a-316a7bc27b59/23471655227.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e282013-1777-4d78-9634-d85981fa8912/bugazilekigexuba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af6a1214-5755-4018-b63a-41d52931b85a/87895043242.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
    • 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_off0000dc2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC2F 6148 bytes
SHA-256: 542a6aaef3143da85ca4a27672670391f59f191f5f2513fbbd687114b5b41373
font_01_sfnt_off0000f125.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF125 16276 bytes
SHA-256: e3828db085c76ac641c3a39d36d1647cd2cedb0707d1e7f945e80adb5f7f53f9
font_02_sfnt_off00012301.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12301 16200 bytes
SHA-256: e3ae351d411ecf762da21f9afda46927b999461b855ce9798299a180eb674093

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