Malicious PDF — malware analysis report

Static analysis result for SHA-256 0315b9db01572df1…

MALICIOUS

PDF

60.6 KB Created: 2020-12-01 15:51:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 38333af4191fca9c465d305fc766a1e4 SHA-1: d5306c05c635090c64837f072a712f6e96f51507 SHA-256: 0315b9db01572df1bcb74754a313cd9cd98d26cd93ccf09e93e6590efb2e7cbd
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 0.9978

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://gettraff.ru/123?utm_term=this+is+the+only+level+unblocked+weebly In PDF document text
    • https://likuxosudiva.weebly.com/uploads/1/3/4/6/134603152/2136c3523.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388416/normal_5fc0a10399604.pdfIn PDF document text
    • https://wemibevufiwoseb.weebly.com/uploads/1/3/0/8/130813314/6660961.pdfIn PDF document text
    • https://wemavejuza.weebly.com/uploads/1/3/4/6/134689468/1813449.pdfIn PDF document text
    • https://muzavixoro.weebly.com/uploads/1/3/4/6/134647253/cd9215d7c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367313/normal_5fb25716741b3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/0922de87-8a4c-46f0-a60a-3c5fa1c6cdc1/jodesotugapuduz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/197e56f9-980e-41ab-bd23-8a629082be26/lufupurebu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f491e3e-3371-4a85-b21b-0360f10d88b9/minimum_wage_in_illinois_2019.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_off0000b0f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB0F7 5128 bytes
SHA-256: c402bb9ffb0b83e78157f09ff67649097ac43992a228c72cb287d9df111d13bb
font_01_sfnt_off0000c284.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC284 10340 bytes
SHA-256: 1e12ae71b1f83b220045c4145c2be7789298260bee45cab61b3fd34e4162d3c7