Malicious PDF — malware analysis report

Static analysis result for SHA-256 f08b337842407952…

MALICIOUS

PDF

160.0 KB Created: 2020-12-17 20:22:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 8244a64034cc5cdea89c8183299d88ab SHA-1: 980ccccc36874e6e2d9f16eee9183a66bca7bb67 SHA-256: f08b3378424079529113df77dbfab476b331dfa5f909ca71011a83e695d911c9
154 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 routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://gettraff.ru/123?utm_term=footloose+on+any+sunday+sheet+music In PDF document text
    • https://giwuvapelefawi.weebly.com/uploads/1/3/4/8/134869604/kuxuveretu.pdfIn PDF document text
    • https://jeponiruwapin.weebly.com/uploads/1/3/0/7/130776483/pugavurepisuxo.pdfIn PDF document text
    • https://taburexil.weebly.com/uploads/1/3/4/3/134374137/3267358.pdfIn PDF document text
    • https://wiruwopifezub.weebly.com/uploads/1/3/4/3/134345133/9711c053cc99.pdfIn PDF document text
    • https://josuriwomevopi.weebly.com/uploads/1/3/4/7/134769094/c06cc3739188179.pdfIn PDF document text
    • https://suzokixuvajix.weebly.com/uploads/1/3/0/7/130776208/8920772.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/rebesudanolo/34654771565.pdfIn PDF document text
    • https://s3.amazonaws.com/sezebepit/fanivitofapubodekowokoxom.pdfIn PDF document text
    • https://s3.amazonaws.com/tobobowu/roregob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f3f27bc-272a-4362-96b4-ee72eff2abe9/givorekosolaled.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc50c986b97992eb5766a10/t/5fc6775b145a8629dc90b910/1606842204515/plane_tickets_to_colorado_from_chicago.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a276636d-1cbb-4709-b492-50799f9b7d9a/sovarigowom.pdfIn PDF document text
    • https://s3.amazonaws.com/fizup/jusemejatap.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc7a17303f04e270fe5ae5c/t/5fcc7130eb18547f4b7ceb75/1607233841591/78480903070.pdfIn PDF document text
    • https://s3.amazonaws.com/lonozote/canada_visa_application_online_form.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_off00023b76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x23B76 5140 bytes
SHA-256: 9dc28b1dd3be6faf218f9a486480f5b2cbda09f3c94fd58635eea98995feab59
font_01_sfnt_off00024cdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24CDB 11240 bytes
SHA-256: 669ba263f9977f53eb2fa7168e0a9ea88e5a90607e2f77869990919d8a7122ca

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