Malicious PDF — malware analysis report

Static analysis result for SHA-256 690be6fccdf82603…

MALICIOUS

PDF

68.4 KB Created: 2021-02-11 09:31:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: db0859044f94fdc01d234ace6e58989c SHA-1: 2856065cde3c2ab4c7e928557539dcb05391eb4c SHA-256: 690be6fccdf82603dbad199435661cf97fb584e761c132b791c548c37385cda9
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded URLs and is flagged by multiple heuristics as malicious, including a critical alert for linking to known malicious redirector infrastructure. The document body, though partially corrupted, suggests a lure related to an examination date sheet, aiming to trick users into visiting the malicious URL. The presence of embedded URLs and the ML classifier's high confidence score indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://yafferge.ru/aws?utm_term=fbise+date+sheet+supplementary+2019+hssc In PDF document text
    • http://damodudajipofem.22web.org/carrello_elevatore_usato_manuale.pdfIn PDF document text
    • https://cdn.sqhk.co/vimerokil/jf9Ihdg/vawurizevolititufupitarut.pdfIn PDF document text
    • https://cdn.sqhk.co/tutabalero/fdStkal/crew_clothing_sale_discount_code.pdfIn PDF document text
    • https://cdn.sqhk.co/tivuzofep/Ixjdfhh/helicopter_for_sale_texas.pdfIn PDF document text
    • http://gedoviduge.iblogger.org/ryobi_door_hinge_template_reviews.pdfIn PDF document text
    • http://detonic-official.website/sokilejavuzufobomadawudvt5k.pdfIn PDF document text
    • https://cdn.sqhk.co/zenekukera/idih0E8/73190951187.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/zuxime/nexotufuxipibefi.pdfIn PDF document text
    • https://s3.amazonaws.com/dinigugaxej/88978412866.pdfIn PDF document text
    • https://s3.amazonaws.com/bevarolimesale/guxokifojusar.pdfIn PDF document text
    • https://s3.amazonaws.com/bezorito/6462794474.pdfIn PDF document text
    • https://s3.amazonaws.com/suzujewa/ranabolirag.pdfIn PDF document text
    • https://s3.amazonaws.com/fazujo/74669362581.pdfIn PDF document text
    • https://s3.amazonaws.com/jagux/69462183216.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

Related samples 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cbc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBC6 5992 bytes
SHA-256: 768b70cd7234d0db23aca4472f4aac6418f2ebf90c76c2343157b6d17717e912
font_01_sfnt_off0000e004.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE004 10688 bytes
SHA-256: 96aab9a439c4b053e6f347d34e96367e88dc8c00e9ab151759ceaeab57b0b4d5

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