Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a483cd2f8281f8c…

MALICIOUS

PDF

84.7 KB Created: 2020-11-29 02:38:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: fd35a99779f9b3e32b2c5714459bda9d SHA-1: 9d8ad9982da4e3313a7170e6e25f832b9614d90a SHA-256: 6a483cd2f8281f8c2a9380e08f6d7aaec53f3161f6d895c358aa92ddfd282337
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 0.9998

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/aws?utm_term=film+bioskop+3+dara+full+movie In PDF document text
    • https://cdn-cms.f-static.net/uploads/4391899/normal_5f9eda96966cd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426062/normal_5fadcb7e5e75b.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/91ffb6f3-31a4-4d7e-8b2b-c1667867d5ad/10890942441.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af209c4e-2304-4f25-8b7c-de77998074e8/46220996463.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a95e0a11-3469-4511-8779-f561c9139c7e/72726415912.pdfIn PDF document text
    • https://s3.amazonaws.com/tinezedu/vb6_date_format_sql.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c0649f8-5b2e-4cd4-891f-1aafd1e991d9/sex_for_dummies.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/778d8ceb-3789-4953-82f8-da81561e3ac9/98966065775.pdfIn PDF document text
    • https://s3.amazonaws.com/figugipopar/template_jmx_generic_zabbix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d00e751-95b1-4711-8a87-26c5f75e5f0f/wewijibuxezumusebogix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80aeed25-8fb9-4ab9-81ea-0a4c906bef61/leluledaj.pdfIn PDF document text
    • https://s3.amazonaws.com/zidosozawok/40002907689.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9893e440-8811-4d01-a3aa-3dbccac52368/bloodlust_metal_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2bb51a6-42a9-49de-8f19-c8156155e77e/24916277315.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_off00010bf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BF1 5572 bytes
SHA-256: 4086c4ab4d4cafd20fbddc11e9bf306bf73f668ade2f852b6b36ff3a4579530c
font_01_sfnt_off00011ecd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11ECD 11616 bytes
SHA-256: 6a135555563bae3c40f1978aca97685def7f6240df61b9e47d2de7c8e81540fd

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