Malicious PDF — malware analysis report

Static analysis result for SHA-256 2555fca832d99dba…

MALICIOUS

PDF

71.7 KB Created: 2021-03-25 04:48:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 30d408ad0e09b59fb90ba9d1bd0c0c74 SHA-1: 029da87a97c707d46e5b2f6ebfcc41f7a9375242 SHA-256: 2555fca832d99dba9d94d712955a4e2c7e119dab4f42930055caa48962c0b80d
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ClamAV and an ML classifier. It contains an embedded URL that directs users to a domain associated with phishing, disguised as a health guide. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, likely for credential harvesting or further malware delivery.

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
  • 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/wix?keyword=blood+collection+tube+color+guide+nsw+health PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4416504/normal_604b55835714b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484814/normal_5fd1709f0ac62.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365549/normal_600f4c2d704ab.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4428335/normal_5fcb60da5ee08.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420039/normal_602a4d520d547.pdfIn PDF document text
    • https://cdn.sqhk.co/kerutadit/hehcifH/85839664984.pdfIn PDF document text
    • https://cdn.sqhk.co/sobexofap/iNSMtTK/islands_of_adventure_sit_down_restaurants.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453906/normal_6010e60da0717.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379602/normal_602601fc5ad61.pdfIn PDF document text
    • https://cdn.sqhk.co/gejixoneku/jhPhjaX/tezubanusow.pdfIn PDF document text
    • https://cdn.sqhk.co/jotapepikota/UgemCKi/idle_car_factory_mod_apk_hack.pdfIn PDF document text
    • http://fofakowusagafo.22web.org/icai_exam_hall_ticket.pdfIn PDF document text
    • https://cdn.sqhk.co/gorusuvu/RGlYnzn/44545336878.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443342/normal_60421f35b785e.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/0c9e1547-766c-402e-be7d-5129bf141018/pezitemefalabikixugavug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d94f6535-f889-4521-bde2-d5a1f92bf5a4/xolejojurumelo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/668c063c-b8c7-4a30-939a-0518a1fb8086/tedevaxudi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/988e1887-9d91-4965-9e59-314ef5142c48/kuvojozotimejepagel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/775bc975-7859-4b63-93e7-4325c9ecefaa/my_phone_guardian_claim_affidavit.pdfIn PDF document text
    • http://tujefozumuresul.epizy.com/give_direction_worksheet.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_off0000d9f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9F4 5484 bytes
SHA-256: 89b82fdddc0e09a0a3800b989a0653325d4276617cab9e35899b3f608d250d75
font_01_sfnt_off0000eca1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECA1 10652 bytes
SHA-256: d108e07262b8a8b40db9c18dc6246d99b82a6f24e354880fa7f9a92678bac27c

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