Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf8f0a183543c602…

MALICIOUS

PDF

79.3 KB Created: 2021-05-26 03:44:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 626c4944bfa77b1159c395ec78ea8eb1 SHA-1: 4793c5d81a3fcd2974868f496d4707f7bdeb74c2 SHA-256: bf8f0a183543c60269f4e2400f3a4cccb28e6f54f5a34a6ba7bd34846b6dc73f
96 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 embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://baarspo.ru/strik?utm_term=new+criticism+literary+theory+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4450724/normal_5fde7bd25eca6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410216/normal_5fc7ca8149197.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387698/normal_602509732dccd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475580/normal_5ff793f34722e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500911/normal_602f13a78ec87.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/lusabifef/poisson_probability_distribution_examples_and_solutions.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxefemebidaz/40589021847.pdfIn PDF document text
    • https://s3.amazonaws.com/jemazejodep/battlefield_5_apk_obb_free.pdfIn PDF document text
    • https://s3.amazonaws.com/genijusemu/tutamodawabevijez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6db54797-4436-42af-b691-a74a6187140e/50865083211.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62e5867f-94ff-45fb-8c15-c6805e592ad9/the_wave_movie_trailer_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/zubata/automated_manual_transmission_amt_wiki.pdfIn PDF document text
    • https://s3.amazonaws.com/tawosutosuxi/good_food_guide_voucher_list.pdfIn PDF document text
    • https://s3.amazonaws.com/vavabi/financial_reporting_and_analysis_charles_h_gibson.pdfIn PDF document text
    • https://s3.amazonaws.com/gusule/different_types_of_cricut_machines.pdfIn PDF document text
    • https://s3.amazonaws.com/zagapaxa/boketufun.pdfIn PDF document text
    • https://s3.amazonaws.com/simujix/how_much_do_street_cleaners_make.pdfIn PDF document text
    • https://s3.amazonaws.com/takebemanijewok/14850174438.pdfIn PDF document text
    • https://s3.amazonaws.com/xafaxotaful/passport_application_form_2018.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f797b8e-fc2d-40dd-aa94-594cfc7b6f2a/seralefaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dcf2feb5-17f9-4c92-ba76-b65e96d2efa0/sas_ods_rtf_text_options.pdfIn PDF document text
    • https://s3.amazonaws.com/remavuj/zeguwobafatolumos.pdfIn PDF document text
    • https://s3.amazonaws.com/pogolo/79220933368.pdfIn PDF document text
    • https://s3.amazonaws.com/metakibeme/healthy_boundaries_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/89154912208.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_off0000f7a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7A6 5560 bytes
SHA-256: 83cc9eb5fe0630cad0d37a35149eafae99529a5914e3b41396cd647b4d24e77c
font_01_sfnt_off00010a82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A82 11112 bytes
SHA-256: 88037344c5b81eb78f00e61bf8a7cc3641b09891f38a3ff1615732e62a8828be

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