Malicious PDF — malware analysis report

Static analysis result for SHA-256 83eda94f29d29184…

MALICIOUS

PDF

71.6 KB Created: 2021-03-01 00:40:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: e365a982ace316502538c33342d98b56 SHA-1: b1efeaab2f753b2decff9dc26dfa18bde5e5a2ee SHA-256: 83eda94f29d2918497108015d04d7f3e2ff7bfbbc998417dff5183271e774199
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://kuzutuzo.ru/award?keyword=irobot+roomba+880+specs PDF link annotation
    • https://rokojilezel.weebly.com/uploads/1/3/2/3/132302907/8765146.pdfIn PDF document text
    • https://wiwufupa.weebly.com/uploads/1/3/2/8/132814928/b7579bb2eb.pdfIn PDF document text
    • https://cdn.sqhk.co/vopovaroxamo/Vgcxy6d/lonuzesarajufeg.pdfIn PDF document text
    • https://nonesuwenuvav.weebly.com/uploads/1/3/4/4/134400251/54a0c38759c.pdfIn PDF document text
    • https://gupobotinifetex.weebly.com/uploads/1/3/4/3/134338345/1a75167.pdfIn PDF document text
    • https://sozatoma.weebly.com/uploads/1/3/4/4/134484551/mefegitasekepa.pdfIn PDF document text
    • https://xanowiporak.weebly.com/uploads/1/3/0/8/130814060/07a2d72f2.pdfIn PDF document text
    • http://verifybadgesbusiness.com/digital_marketing_certificate_programs_usa4kvzt.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480732/normal_6014ca5db49b5.pdfIn PDF document text
    • https://nililuwuta.weebly.com/uploads/1/3/0/7/130775375/2655266.pdfIn PDF document text
    • https://tofukoluto.weebly.com/uploads/1/3/0/7/130775982/nunijekisubikavisef.pdfIn PDF document text
    • http://kolomata.ru/cambridge_ket_exam_sample_papers3fzbq.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471996/normal_603a8900ea0c6.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/tikoweravisixu/borg_warner_t5_gearbox_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/limewub/itunes_cho_laptop.pdfIn PDF document text
    • https://s3.amazonaws.com/mubefula/new_c_diff_treatment_guidelines_2018.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_off0000dbe5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBE5 5460 bytes
SHA-256: 8605e08fd050e5e05c6375cdf9850272e8b0fa3d0afb715dce27131bb9bd05a2
font_01_sfnt_off0000ee51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE51 10276 bytes
SHA-256: 907cfa44ec1af3d1750c11dba058cf5b141751679871787fa5112a022f002e81

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