Malicious PDF — malware analysis report

Static analysis result for SHA-256 0dad62f0b3ad9f3a…

MALICIOUS

PDF

68.7 KB Created: 2020-12-02 19:58:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 43de4297c7df562e38d4ac9121d7526f SHA-1: df899c132f39a082c003f434e547ae79913d2d52 SHA-256: 0dad62f0b3ad9f3a2524c92039f8c86017de466b50fa6c26e38f08337f070e24
174 Risk Score

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. It uses a callback-phone (TOAD) lure. 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 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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=ws+10.7+ph+and+poh+answers In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wavunot/electrostatics_questions_with_answers.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf505df3de5e49b55ad7cb/1606373469922/koxerudixir.pdfIn PDF document text
    • https://s3.amazonaws.com/zonivezada/nenaguz.pdfIn PDF document text
    • https://s3.amazonaws.com/fizufapu/83413174021.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd57c942-d617-44f4-a2e3-5a9cf4fb4f20/ss_income_tax_table_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/lebaxa/apocalypsis_noctis_piano_sheet_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32d804a0-1784-4d23-b8aa-0d33f4dacae9/8421061296.pdfIn PDF document text
    • https://s3.amazonaws.com/xoferuzu/formal_charge_of_chlorate.pdfIn PDF document text
    • https://s3.amazonaws.com/tawovojo/get_unofficial_transcript_uc_davis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38111e91-aaa9-42e0-9520-a85183ffdaf5/series_numericas_ejercicios_resueltos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d35ca0d-3623-4582-8a48-f9979debf159/45222724941.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18e4914a-2785-449b-97a0-1e730b93f3dc/93487968415.pdfIn PDF document text
    • https://s3.amazonaws.com/xoxaneral/41727262062.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_off0000cc71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC71 5424 bytes
SHA-256: 702d334220f8bb8612a2b7e93bdedd9cebaa4ab72eb0ed6b4dc5ca628ec1cb62
font_01_sfnt_off0000df09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF09 11768 bytes
SHA-256: 51153248dbd4b5ce1204d0c92968230a8f7af499ebf630b81836c90a87a811cd