Malicious PDF — malware analysis report

Static analysis result for SHA-256 45c5752bcc189412…

MALICIOUS

PDF

69.7 KB Created: 2021-02-25 18:34:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: fc9c11fe7bf4e43c13b8aea5bb97d7eb SHA-1: ff7e259e8913d93c07ffefc1179153f727ad2117 SHA-256: 45c5752bcc1894123e3388851423ba6d2116f41dd1858260cd4d8d8b971cdc99
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://druttle.ru/award?keyword=why+isn%2527t+my+hoover+steam+vac+pick+up+water PDF link annotation
    • http://zizodoroluxonaf.sportsontheweb.net/south_indian_wedding_vegetarian_food_menu_list.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420454/normal_5fcdce151e79e.pdfIn PDF document text
    • http://lizoguxumugef.mywebcommunity.org/27799961183.pdfIn PDF document text
    • http://femokotafi.66ghz.com/le_guide_du_routard_costa_rica.pdfIn PDF document text
    • http://monoga.space/jiwifibamew2aq1.pdfIn PDF document text
    • http://activa-fb.com/alnoor_diagnostic_lab_online_reportsrugg7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368972/normal_60267f1c9e624.pdfIn PDF document text
    • http://sevezor.scienceontheweb.net/49636746624.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464869/normal_60023b42929bd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zevesijuduma.atwebpages.com/seadoo_service_manual_free_download.pdfIn PDF document text
    • http://tafiwepamubov.atwebpages.com/bunker_hill_safe_45891_owners_manual.pdfIn PDF document text
    • http://xugivazule.rf.gd/android_save_bitmap_to_file.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_off0000d351.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD351 5508 bytes
SHA-256: f4c2657f1b0d96a28cbe1d04b1da69014c996e35dcb4b367d09405200a13ea14
font_01_sfnt_off0000e609.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE609 10536 bytes
SHA-256: 8771e4582fed758fd1da04676be97c7c263b8a5c0a15d74e7f1fdebe9991e9a4