Malicious PDF — malware analysis report

Static analysis result for SHA-256 88e32c585d27385e…

MALICIOUS

PDF

70.6 KB Created: 2021-01-01 14:49:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 4d832a1682ccaa328a537d6030321369 SHA-1: 60c3ed368b8a067b618b21c7bf6c8ab7d9d5aa4e SHA-256: 88e32c585d27385e4108e07ab0defc5db480b0aaf727e079ae83f7e27dd140d8
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 0.9976

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://trafffe.ru/aws?utm_term=lagu+terdiam+sepi+dj+remix+metrolagu PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4450870/normal_5fa5f82e506e7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408702/normal_5fd30fa42ad10.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/nowokil/84160021562.pdfIn PDF document text
    • https://s3.amazonaws.com/pozokimepe/wow_classic_leveling_guide_dwarf_hunter.pdfIn PDF document text
    • https://s3.amazonaws.com/jupudizadid/rang_barse_bhige_chunar_video_song.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8211344-77ac-4242-9ff9-e8d0bdafa41e/spaceflight_simulator_1._5_download_pc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d40ad15-a0c5-4d85-bb05-ba9018d2eb76/10500179534.pdfIn PDF document text
    • https://s3.amazonaws.com/gowebabuxogiro/sutazevufavani.pdfIn PDF document text
    • https://s3.amazonaws.com/xasovewipeje/3544860520.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_off0000d702.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD702 5364 bytes
SHA-256: 70274edb9a4beba9df562670e3361c3768a3ca599c85fd169abff45be5224a05
font_01_sfnt_off0000e938.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE938 10760 bytes
SHA-256: 02f17ca1bfd0179240402a034630095a21087bb9c08521cbdd213d9e5a64da26

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