Malicious PDF — malware analysis report

Static analysis result for SHA-256 55e05b05cb556686…

MALICIOUS

PDF

78.5 KB Created: 2021-06-11 03:41:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 116edf2252751ccb028d3946dc7d8246 SHA-1: 0acae431ef5e21000ea6fde74d383770d1b1990f SHA-256: 55e05b05cb556686437f7629f8bde868038ed0436ce21ee267243de115fff767
104 Risk Score
Tags
free-cdn-ebook-manual-lure

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 presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://drafthe.ru/pbw?utm_term=license+key+smadav PDF link annotation
    • https://static.s123-cdn-static-d.com/uploads/4393029/normal_60b3267dd3eea.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483836/normal_5ff22d590a44f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484804/normal_5fce8b93069c2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368488/normal_5fe599d23d36d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426085/normal_606a46234fb65.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4498868/normal_5fdfcb606eb04.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485695/normal_603f92feb41a0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392207/normal_6040a04078bac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459185/normal_601ad810904ff.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368976/normal_5fcc0894ee649.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e74ad91-aed6-466d-9ea0-2e1ec2fb2ed4/vurutefunan.pdfIn PDF document text
    • http://junerew.pbworks.com/w/file/fetch/144683817/do_all_keurigs_have_a_charcoal_filter.pdfIn PDF document text
    • http://gatasulupu.pbworks.com/f/compound_effect_meaning_in_tamil.pdfIn PDF document text
    • http://vulazojab.pbworks.com/f/dihybrid_crosses_worksheet_answers_unit_3.pdfIn PDF document text
    • http://marutipug.pbworks.com/f/hulu_free_trial_hbo_max.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67d2d0ce-1d40-4f66-8dab-bf9e1d3dad12/what_is_fertility_transition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/499f577f-967c-4789-92e5-abd40ed1ba7a/ar-15_parts_diagram_mat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/163de35d-208a-4213-9aa4-a5900bef620d/mesa_boogie_dual_rectifier_tremoverb_schematic.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_off0000f652.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF652 5124 bytes
SHA-256: 9978b361c028c708f31ca2150f1a5d5233bb5f32a02de3da89494adbb8205808
font_01_sfnt_off000107c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107C5 10976 bytes
SHA-256: bced0131fc887ed3e2e9747c0142e7c52a43511bb2fbfbc48ba9d15dbb8dcb86

Open this report in the interactive analyzer, or submit your own file for analysis.