Malicious PDF — malware analysis report

Static analysis result for SHA-256 de9301b590179a77…

MALICIOUS

PDF

68.5 KB Created: 2020-12-22 23:03:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 08b22a81f164a0e430adbbeae29a1d60 SHA-1: bc2a93082a8473d06ae672358845e45274da97f5 SHA-256: de9301b590179a770b244551fe6d6c4906b6c925e2d7a2220f23aee29e13cfe4
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File T1059.007 JavaScript

This PDF was flagged by ML classifiers and ClamAV as malicious, specifically indicating a credential phishing lure impersonating Apple. The embedded URL and the action link point to redirectors and a malicious PDF hosted on external domains, suggesting an attempt to trick users into downloading further malicious content. No scripts were extracted, but the overall pattern indicates a phishing campaign leveraging a malicious document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://fakuduvedutew.weebly.com/uploads/1/3/4/8/134866980/woxojut.pdf.
  • 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://traffnew.ru/strik?utm_term=zombie+frontier+3+hack+ios+2019 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4381289/normal_5f993a4499a73.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446643/normal_5fca2c2db9609.pdfIn PDF document text
    • https://fakuduvedutew.weebly.com/uploads/1/3/4/8/134866980/woxojut.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485572/normal_5fb64429ee90c.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/piradi/sanijufibaworaron.pdfIn PDF document text
    • https://s3.amazonaws.com/vukusa/english_tenses_for_dummies.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f230a8d1-e22d-4dc6-9d27-586f305c0bb7/rusch_baby_food_processor_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ceb3d411-c6d7-465d-b53b-77ae806b269d/charlie_parker_series_connie_shelton.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9d6bf77-38c8-4ab4-af51-31be83fa3ab2/173725553.pdfIn PDF document text
    • https://s3.amazonaws.com/kozibowisenatu/57784691462.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_off0000cdd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDD9 5896 bytes
SHA-256: eb49bebf85112a0fc036665c325fc900198063311d01c24172c8bd78979f904d
font_01_sfnt_off0000e1c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1C7 10396 bytes
SHA-256: e7a398c403d9a9ae9e8c5c12abebc2184cc06021733c11cf7876c3f520dc708a

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