Malicious PDF — malware analysis report

Static analysis result for SHA-256 59189a908e5a2b0d…

MALICIOUS

PDF

172.1 KB Created: 2020-12-24 21:49:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: c33db587f4107b4eb5ff928292fa671b SHA-1: 80b1a0f463f72a58bda8afc8c6c771cf8fffa3ac SHA-256: 59189a908e5a2b0dc4000e0c209e9c7533f7ad380e4e9bfd87aa4bac63386b87
154 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. 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 0.9988

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
  • 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://cctraff.ru/123?utm_term=stamford+elementary+school+lottery In PDF document text
    • https://cdn.sqhk.co/pakuvesajuwo/Sohfqq3/fan_of_guns_hack_download_ios.pdfIn PDF document text
    • https://cdn.sqhk.co/zesunotu/Z3SBgji/unicorn_photo_shoot_dresses.pdfIn PDF document text
    • https://cdn.sqhk.co/xowuzaseku/njheHgg/archery_world_championships.pdfIn PDF document text
    • https://beserozufem.weebly.com/uploads/1/3/4/8/134864657/4b6b9.pdfIn PDF document text
    • https://cdn.sqhk.co/gopefovepagi/hgi89hi/mod_pizza_delivery_doordash.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/tetofamuxulil/sejojipijupeve.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/free_books_download_in_hindi.pdfIn PDF document text
    • https://s3.amazonaws.com/patotale/46301771784.pdfIn PDF document text
    • https://s3.amazonaws.com/pazovugal/78180107827.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/agenda_2030_del_desarrollo_sostenible.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_off00026c57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x26C57 5468 bytes
SHA-256: 00cd988172e6239640be1c3080ab5511e7676207bde99f73a49799f477518a81
font_01_sfnt_off00027ecc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x27ECC 10672 bytes
SHA-256: 96ea2065fcdf76812a444a4479a9e6b5e2e06fa0822f2ac19442167fbaad56f4