Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1e3f2a3d4ff34e2…

MALICIOUS

PDF

81.1 KB Created: 2021-02-20 15:44:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 9c2f39a7df0fb95bd8c816b4ada15054 SHA-1: a7e42e265a93138ff7983d1bc0639533c9fab7df SHA-256: e1e3f2a3d4ff34e2c9d36a544134c67d2bd6329a61a80c59ae2a06c7004d360d
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a URL that appears to be a lure for downloading an application. ClamAV detection and ML classification strongly indicate maliciousness, consistent with a phishing or trojan distribution attempt. The presence of an external URI suggests an attempt to redirect the user to a malicious site.

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://druttle.ru/strik?utm_term=learn+to+draw+anime+app+free+download PDF link annotation
    • https://cdn.sqhk.co/fapetemiji/DL4phbw/10702460963.pdfIn PDF document text
    • https://nusevusigafub.weebly.com/uploads/1/3/1/3/131398220/7883927.pdfIn PDF document text
    • http://mkr-olimp.info/juvuzejafuzopuzujujudhy8n.pdfIn PDF document text
    • http://the-glow.ru/64187486767630k3.pdfIn PDF document text
    • https://vusexojepaxeva.weebly.com/uploads/1/3/4/0/134096357/21b61f1da9cd32f.pdfIn PDF document text
    • https://cdn.sqhk.co/fekawifen/zWhajdV/running_on_empty_food_review_intro.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444626/normal_602d9fa6d7c4c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390069/normal_602b697c9e948.pdfIn PDF document text
    • https://cdn.sqhk.co/kofelejezem/giRz6if/carespot_sunrise_fl.pdfIn PDF document text
    • http://koteyarn.moscow/chase_mobile_checkout_plusppumk.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/jubiferekaka/25507166956.pdfIn PDF document text
    • http://verepuremi.rf.gd/bell_hooks_the_will_to_change_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/ponivotigegepub/carers_allowance_application_form_ni.pdfIn PDF document text
    • https://s3.amazonaws.com/jedadokuti/greedy_cave_nightmare_guide.pdfIn PDF document text
    • http://kafopazam.epizy.com/29785230443.pdfIn PDF document text
    • https://s3.amazonaws.com/pizivurapab/declaration_of_trust_template_property.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_off00010194.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10194 5044 bytes
SHA-256: 7af2bdc2de7b1809a2f25a518d22ba337e34b850cd2aef19b89f60902e6ce39c
font_01_sfnt_off000112c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112C0 10640 bytes
SHA-256: 4810ccb7b8ad8479ae9978ab13f52688276db89dc644d1c98307879042ed5c16