Malicious PDF — malware analysis report

Static analysis result for SHA-256 9425a04e1e957e95…

MALICIOUS

PDF

65.9 KB Created: 2021-03-06 09:51:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 57d80470aa4379a7953f26b51fd71183 SHA-1: 5c9cb2505155f26db7974da0dfd6a3e682952979 SHA-256: 9425a04e1e957e95c5629ef148d13a00cd61d1e40b0a44fbd390bc7896fc965b
96 Risk Score

Malware Insights

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

The PDF file contains an external URI pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The document body, though heavily obfuscated, suggests a lure related to a book review. The presence of embedded URLs and the ML classifier's high confidence indicate a malicious intent, likely to redirect the user to a phishing site or download further malicious content.

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://soxebez.ru/strik?utm_term=the+power+of+now+book+review PDF link annotation
    • http://nejevefivi.mypressonline.com/71121726853.pdfIn PDF document text
    • https://munuteme.weebly.com/uploads/1/3/4/8/134862418/welonuwotid.pdfIn PDF document text
    • https://dowibowaxetejoz.weebly.com/uploads/1/3/0/7/130740522/xadomevefoxazuv_xajuwo_xowerogu_rizetuke.pdfIn PDF document text
    • https://xuredetinumimo.weebly.com/uploads/1/3/4/6/134630251/0ac7dd.pdfIn PDF document text
    • https://nalovitifa.weebly.com/uploads/1/3/4/6/134600698/sufev.pdfIn PDF document text
    • http://penafur.scienceontheweb.net/international_journal_of_research_in_marketing_ranking.pdfIn PDF document text
    • https://nojufetabug.weebly.com/uploads/1/3/4/7/134748112/wumujowuxixete.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/nefunupu/crash_course_gastrointestinal_system.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9756bd82-9d3a-4367-9d8d-96d126d639ea/33480198682.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0f93168-21f3-4945-8d45-74b4ee15c30a/pemejux.pdfIn PDF document text
    • https://s3.amazonaws.com/tidigudetefumof/kingkiller_chronicles_wikipedia.pdfIn PDF document text
    • http://logasexa.epizy.com/soxifewifeziwowu.pdfIn PDF document text
    • http://jubogaju.atwebpages.com/why_is_seeing_color_important.pdfIn PDF document text
    • https://s3.amazonaws.com/silubebebefuju/blank_certificate_of_authenticity_template.pdfIn PDF document text
    • https://s3.amazonaws.com/xarojapi/76983773236.pdfIn PDF document text
    • http://ledolabufimo.epizy.com/xogadazesijunu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62c21ac0-f053-433a-a26f-b452d1ccd029/1995_jeep_wrangler_repair_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9651d20-2568-4510-909a-a10e5526f2ef/kenwood_dnx5120_software_update.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_off0000c6df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6DF 4876 bytes
SHA-256: 7b4b4436c8a875a981c0a4bf247b9b68cedd19131cb4ebd682016127e17acf44
font_01_sfnt_off0000d785.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD785 10284 bytes
SHA-256: bb70c5ae0fcc5f8eb6e60063ff866df89acb75fb5006189869eeec3df58f2aa6

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