Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac2500ba927e8a58…

MALICIOUS

PDF

163.7 KB Created: 2021-02-19 02:13:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 129413e0103e8997196b87b8733ae9ac SHA-1: 25286dc01172872c0d19ce27e7eae5d25754d653 SHA-256: ac2500ba927e8a58f028668be811e658b640e6ca5aa44d74fdd695f587a80558
96 Risk Score

Malware Insights

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

The PDF document contains a lure related to Xfinity internet setup, directing users to a suspicious URL. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest it's designed to exploit users through deceptive content and external links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://bologen.ru/strik?utm_term=how+to+hook+up+xfinity+cable+box+and+internet+with+splitter PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4392862/normal_5ff256a79a40b.pdfIn PDF document text
    • https://cdn.sqhk.co/kawonidoza/Zhdjbid/tubal_ligation_reversal_cost_in_mexico.pdfIn PDF document text
    • https://cdn.sqhk.co/bajafigotuvi/lCjhAoo/free_fonts_for_commercial_use_handwriting.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467005/normal_601c96f1e3560.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413735/normal_600300c0d3af4.pdfIn PDF document text
    • https://cdn.sqhk.co/gotakavapu/cigEjcl/redamipu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427097/normal_6023ead30ec21.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480182/normal_5fdc711aeeaed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466146/normal_601c7dcd286bb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382418/normal_5fc989c100828.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392857/normal_5fc8a03ba7044.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/lizuseguwix/telugu_love_feeling_songs_ringtones.pdfIn PDF document text
    • https://s3.amazonaws.com/lomogas/98966847372.pdfIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/battistero_degli_ariani.pdfIn PDF document text
    • https://s3.amazonaws.com/punurum/talking_tom_2_apk_apkpure.pdfIn PDF document text
    • https://s3.amazonaws.com/bupaxomu/chrome_extensions_android_ublock.pdfIn PDF document text
    • https://s3.amazonaws.com/taturi/nojixilunimunagumezeba.pdfIn PDF document text
    • https://s3.amazonaws.com/salade/student_absence_form_template.pdfIn PDF document text
    • https://s3.amazonaws.com/xiwevitox/waukon_equity_market_report.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002338a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2338A 5552 bytes
SHA-256: 7b0870f86c9a9b0381f53a44e4708cb5a13979c7aab446c2c5c7e4b15dcda38f
font_01_sfnt_off00024670.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24670 13132 bytes
SHA-256: fdc0fcc55cab8af75e8ea9cf17514ae94f969d5237068e48c2739dda8cdbf949
font_02_sfnt_off000271e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x271E6 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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