Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6f6c233b467255d…

MALICIOUS

PDF

64.2 KB Created: 2020-12-07 22:40:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: f8c92208002ca9bf246da94b48814fce SHA-1: 2e37cd79ddc5455246f1388b41abfba0a80191cd SHA-256: e6f6c233b467255de3cfe695de77c43b3770797bb903b93c5eba43d7c3202002
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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://trafficel.ru/strik?utm_term=surface+area+rectangular+prism+nets+worksheet PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4384304/normal_5fa10369b3e76.pdfIn PDF document text
    • https://kawuloxegulul.weebly.com/uploads/1/3/4/3/134389306/ramalojonazo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366371/normal_5f9de03442ecb.pdfIn PDF document text
    • https://dazutogu.weebly.com/uploads/1/3/4/6/134649144/9418882.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483104/normal_5fbd72270cd18.pdfIn PDF document text
    • https://rosanibo.weebly.com/uploads/1/3/4/8/134873488/fulitavinenulewofan.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/cd6b2fe3-59a7-4216-a4c1-63b4f6743245/jugusipuk.pdfIn PDF document text
    • https://s3.amazonaws.com/sedimeraxufi/31737069111.pdfIn PDF document text
    • https://s3.amazonaws.com/dekogamik/java_jre_7_u51.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_off0000bd37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD37 5688 bytes
SHA-256: 6eeb6f82e0a7dc87247ebccc782bd941acd93dad100e676c6a5658c8481a3f3b
font_01_sfnt_off0000d07a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD07A 10384 bytes
SHA-256: 73deab4a130eed38ae0667cedbb0aaf379460ba5292ca3036dc934242e8eddb3

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