Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4ae073b847cc7e4…

MALICIOUS

PDF

171.2 KB Created: 2021-03-03 09:07:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 96f2f38b3cee8c01a5fbfd5e80fde4d3 SHA-1: f3e312b17e7d7cc66781fc99a3fa729cc4b67c5f SHA-256: d4ae073b847cc7e49598692a3887066158a105992fe89fbd22b49c43e7012c02
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 0.9998

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://dafemum.ru/wix?keyword=cortland+elementary+school+supply+list PDF link annotation
    • https://cdn.sqhk.co/xinulezebi/hfcgjjg/78108179075.pdfIn PDF document text
    • http://siwivelijutore.medianewsonline.com/96255327091.pdfIn PDF document text
    • https://cdn.sqhk.co/zururodi/ejavOii/81442954778.pdfIn PDF document text
    • https://cdn.sqhk.co/matelasoguje/9haPJGR/balbharti_marathi_book_1984.pdfIn PDF document text
    • https://cdn.sqhk.co/sujubowip/jcGwe5P/60584327350.pdfIn PDF document text
    • https://cdn.sqhk.co/waxobakal/gFWhcR5/mipotumusofuw.pdfIn PDF document text
    • https://cdn.sqhk.co/mudonisogub/jg4hcij/sniper_combat_proficiencies.pdfIn PDF document text
    • https://cdn.sqhk.co/fusunejevawu/eiejfFc/gixubinutelefibes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416493/normal_60180683ed05b.pdfIn PDF document text
    • https://cdn.sqhk.co/bivuwusim/cidjdii/49366551416.pdfIn PDF document text
    • http://sitebomobegux.sportsontheweb.net/84946761708.pdfIn PDF document text
    • https://cdn.sqhk.co/turaxulefa/ojjX5jj/46421538526.pdfIn PDF document text
    • https://vawilateg.weebly.com/uploads/1/3/4/6/134697686/pavezawaxemedax_wonapenizesiwa_jusanuxepon.pdfIn PDF document text
    • https://cdn.sqhk.co/tevunufoba/ij0MUja/xikawukuw.pdfIn PDF document text
    • http://zugapuvu.mywebcommunity.org/55255404774.pdfIn PDF document text
    • https://cdn.sqhk.co/savunowudob/ghajdI9/virtual_piano_sheets_minecraft_sweden.pdfIn PDF document text
    • https://cdn.sqhk.co/vovusupa/bDv4hdO/53731854349.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410432/normal_5fcef73619036.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off00026a50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x26A50 5320 bytes
SHA-256: 665d71089573097da21a747af04a7104f4fa2bfec65b7fbf0c3d05a742e64c83
font_01_sfnt_off00027c3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x27C3D 10308 bytes
SHA-256: b7156f57010abefa1f292dbd42698d6e682a2126402642ff879937dbedd540a0

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