Malicious PDF — malware analysis report

Static analysis result for SHA-256 08dbfbf935394e95…

MALICIOUS

PDF

72.4 KB Created: 2020-11-13 02:39:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: e33e7c846c81f1bcb6a173617c2f9333 SHA-1: 90809282148e3933f659479b0f830f30f059e359 SHA-256: 08dbfbf935394e95565240674f69b0124a74dc166f6f0177da5b5b7da83184ec
154 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://gettraff.ru/123?utm_term=nelco+sewing+machine+models In PDF document text
    • https://junovolosexev.weebly.com/uploads/1/3/4/4/134467690/74a9d8927.pdfIn PDF document text
    • https://kawewadibuporak.weebly.com/uploads/1/3/4/3/134371142/6418513.pdfIn PDF document text
    • https://josugonu.weebly.com/uploads/1/3/4/4/134488469/kiburuzasibebun.pdfIn PDF document text
    • https://buvojitode.weebly.com/uploads/1/3/4/6/134630820/0cb6195a9a43e5a.pdfIn PDF document text
    • https://mepefukuwipo.weebly.com/uploads/1/3/4/5/134523025/0b6570a077ed.pdfIn PDF document text
    • https://tunomofezu.weebly.com/uploads/1/3/2/3/132303147/3106057.pdfIn PDF document text
    • https://fofumugu.weebly.com/uploads/1/3/4/4/134445246/7198826.pdfIn PDF document text
    • https://bupiwuzisulim.weebly.com/uploads/1/3/0/8/130874125/fubizubowilibuk.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/tobaziw/natural_resources_in_new_jersey.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/atomic_structure_and_bonding_download.pdfIn PDF document text
    • https://s3.amazonaws.com/jarawaxanivu/17.2_fossil_fuels_answers_strip_mining.pdfIn PDF document text
    • https://s3.amazonaws.com/lopadivupudexa/2015_subaru_forester_maintenance_schedule.pdfIn PDF document text
    • https://s3.amazonaws.com/sukedil/el_buen_pastor.pdfIn PDF document text
    • https://s3.amazonaws.com/suximawo/bescherelle_la_conjugaison.pdfIn PDF document text
    • https://s3.amazonaws.com/labitajaxatufib/justia_docket_search.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_off0000df32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF32 5316 bytes
SHA-256: df2bdde0e3d50d6d88dbaa344c214c9e7adc5f9d4db449650649610917f1e296
font_01_sfnt_off0000f138.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF138 10416 bytes
SHA-256: 14f46906e0d4725a2a0db4c9999bb8a56813ea8346685270369c99e1c9fc0264

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