Malicious PDF — malware analysis report

Static analysis result for SHA-256 1418e1b638d523a8…

MALICIOUS

PDF

68.5 KB Created: 2021-01-12 00:18:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 832fc573106b042bf515c38576ba90f3 SHA-1: 5e01c8d295f9d289f0a0d0266904b0de00ddad3c SHA-256: 1418e1b638d523a8ee506bc65e2769660a8dd8fd73dae8479002b54a03f51282
154 Risk Score

Malware Insights

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

The PDF contains embedded links that point to known malicious redirector infrastructure, specifically 'ggtraff.ru'. The ML classifier and ClamAV detection strongly indicate malicious intent. The primary attack pattern involves redirecting the user to a potentially malicious site, likely to deliver a second-stage payload or conduct a phishing operation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://ggtraff.ru/aws?utm_term=basic+maths+questions+and+answers+for+interview In PDF document text
    • https://najijufo.weebly.com/uploads/1/3/4/7/134714833/rizawunawipofivovuz.pdfIn PDF document text
    • https://wudajelenap.weebly.com/uploads/1/3/4/4/134470879/garalinaz_xixabatokipeget_mizigetu.pdfIn PDF document text
    • https://darenufu.weebly.com/uploads/1/3/1/4/131438483/d94bb65ffd82566.pdfIn PDF document text
    • https://site-1166620.mozfiles.com/files/1166620/swamp_people_cast_2020.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487007/normal_5fbe6d0298419.pdfIn PDF document text
    • https://mefapepuj.weebly.com/uploads/1/3/4/3/134310437/8631318.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503578/normal_5fdbd87f1b09a.pdfIn PDF document text
    • https://kilesikawagex.weebly.com/uploads/1/3/4/3/134372597/pibobana.pdfIn PDF document text
    • https://site-1166625.mozfiles.com/files/1166625/vetax.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_off0000cc98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC98 5556 bytes
SHA-256: 56369e29ee4ae03dfa7fd3daa1d37c783bd2c4bf4927f586f9f4398a2979a22b
font_01_sfnt_off0000df69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF69 11248 bytes
SHA-256: b900b69b49b2fe4b277d955e50103879a1a3d0ee0636722c678d1c672ddafb30