Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5c3121e710d4e3e…

MALICIOUS

PDF

67.9 KB Created: 2020-11-22 17:49:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 56eebadf351c57360783f2c74484dab8 SHA-1: 1f51b84f397faeea2e3386a3dc73824d8a1ae8f0 SHA-256: f5c3121e710d4e3e72ba60e6c73f5d032375313d6ee642ed168052497b596194
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 0.9997

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=sugar+chile+robinson+today In PDF document text
    • https://cdn-cms.f-static.net/uploads/4375197/normal_5f8bed23bef6b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383451/normal_5f96db6a7984f.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/9d0ad5b0-98d8-47ac-b742-c624dddb4a97/lekorisewisawebopivununob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bab04565-cfb2-467d-b819-d2389c1ca780/27934643776.pdfIn PDF document text
    • https://s3.amazonaws.com/bevarolimesale/zagivumajadokag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9b0cedd-c581-4e85-89e4-4327c15209e9/jiwepo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91dd9a7c-b42e-4cdb-b9f1-8403bc07bb28/zunixexosefifaxuwop.pdfIn PDF document text
    • https://s3.amazonaws.com/kisimujuk/tidehaven_isd_texas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57710c8b-9a68-4ca4-80ab-99f0420147b1/fogifoximoda.pdfIn PDF document text
    • https://s3.amazonaws.com/jaxesabi/apple_watch_instruction_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/faee73e5-b67a-4116-abf9-2cc3694bc15d/gofutomeve.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6bc0493c-529e-4e2e-88e2-55e899cdcf48/feselaledepaget.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_off0000cb74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB74 5548 bytes
SHA-256: 0a7261d4a60cfaf03ae56e1f7dc8ba9ac60b1da582725ea33554f569f965a158
font_01_sfnt_off0000de49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE49 10872 bytes
SHA-256: df7c379d805682e65bfac6e09091cd4cbcea060cbf6b9b9c0d1825c273fe60b8