Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea1b8d9475c4b79e…

MALICIOUS

PDF

65.1 KB Created: 2020-12-24 10:46:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: e68336c3839b03af07547ec1d0f71c5b SHA-1: d407a0bf9d054d464fd7b563806ab31deca52149 SHA-256: ea1b8d9475c4b79e7f70787c629de8b2d2f5e01ef4316c2f64eca192478c08b1
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document contains an embedded URI pointing to a suspicious domain, identified by ClamAV as a phishing trojan. The document body, though heavily obfuscated, appears to be a lure related to product listings. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content.

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
  • 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://traffset.ru/strik?utm_term=drill+press+attachment+for+hand+drill+harbor+freight PDF link annotation
    • https://cdn.sqhk.co/wemegofuk/hibgd5n/automatic_tennis_ball_launcher_dog_toy.pdfIn PDF document text
    • https://cdn.sqhk.co/lotazoza/eihbjjg/career_exploration_projects_for_high_school_students.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420468/normal_5f9e390187454.pdfIn PDF document text
    • https://cdn.sqhk.co/sukurorezib/8fQjhgh/lorumotafasilelumad.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/51b8a1a8-92ac-4cc3-820c-1221d2c5f87b/bojima.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b816386-689a-4f21-8537-36cad1bdd38f/kaw_eb_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd79aa56-3c9a-45fe-9111-9db6b720a3ac/kia_sorento_manual_gear_stick_removal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/276639c2-cd3f-42eb-aac3-6e9c040f8dcd/nsca_study_guide_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/776667ea-c74d-44a3-aefe-caa834019e4a/25051319716.pdfIn PDF document text
    • https://s3.amazonaws.com/gupawupigawono/mavexakalonajaji.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3079fcae-805e-4411-972c-93944b45a6c1/xafefexepadinudopuginuve.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a06ef77-9b12-4c51-bb2c-df1fa81a54c7/govibowarasudagakarilas.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b488.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB488 5496 bytes
SHA-256: 92fbec678c502e453ce30feb2485de12da91010a1cef24ea6ac0302feaf54807
font_01_sfnt_off0000c705.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC705 9964 bytes
SHA-256: 57fd0f8cc03e2d21aecb3ad99eaa082c34a5dd8428b10537f31bc5b71608a6f7
font_02_sfnt_off0000e91d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE91D 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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