Malicious PDF — malware analysis report

Static analysis result for SHA-256 96c5e02ce1570b92…

MALICIOUS

PDF

69.7 KB Created: 2021-02-24 04:39:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 2b63060ad0a2de3e0505a9ec5d124641 SHA-1: a225f4e7e49a28604974582aee4d99727a973cf8 SHA-256: 96c5e02ce1570b9278312cd0f44ffad54dc4e65cb2975882c7a0db67f383b8af
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://bologen.ru/wix?keyword=google+certified+educator+level+1+exam+tips PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4382948/normal_6008d83e60491.pdfIn PDF document text
    • https://vabuxijipureg.weebly.com/uploads/1/3/4/4/134476882/4756246.pdfIn PDF document text
    • https://pasezarovatif.weebly.com/uploads/1/3/4/8/134858127/mekopari_lotutolafimaxi.pdfIn PDF document text
    • http://arfesopt.com/bepixevofijamodnshhw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476152/normal_600ae3b228e66.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428341/normal_602ad62752c49.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496592/normal_602050eb4644a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381730/normal_600e0a0176022.pdfIn PDF document text
    • https://kaperimivegorew.weebly.com/uploads/1/3/4/3/134371305/3ca933c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415951/normal_5fccb92d49a3f.pdfIn PDF document text
    • https://nafuxiba.weebly.com/uploads/1/3/4/0/134097784/53690b74cfa23.pdfIn PDF document text
    • https://litisenos.weebly.com/uploads/1/3/1/0/131071047/9970735.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469378/normal_5fe3b7d06eebb.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/lepefi/39343302818.pdfIn PDF document text
    • https://s3.amazonaws.com/safenalavojuwu/agent_vinod_480p_hd_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/salosibejodod/set_button_border_color_android.pdfIn PDF document text
    • https://s3.amazonaws.com/novifamigot/foburufetixuvajuwuduro.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_off0000d2e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2E5 5684 bytes
SHA-256: a8befd7d1a8bfd8f716b42800fba98d61a69ac53197eb929d2dbb4e310ca659f
font_01_sfnt_off0000e643.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE643 10476 bytes
SHA-256: 32834b2f6ac757fef4e321c71407d85c9218cb9f2eae0bdcdbd1db351233e392