Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e94dbeaa9bcaaa9…

MALICIOUS

PDF

40.4 KB Created: 2020-11-08 03:11:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 46d83d9a217521cf4fb44521a5bb67a0 SHA-1: d1b327227814fc3e6b47c05ec69ca83226617fc6 SHA-256: 3e94dbeaa9bcaaa91d6f66da192331a4ce6001a525193ffa982f4ecc62d9eebd
154 Risk Score

Malware Insights

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

The PDF contains embedded links, with one pointing to a known malicious redirector at 'https://traffine.ru/aws?keyword=compton+police+shooting+news'. The document body, though heavily obfuscated, appears to contain this URL and other links, suggesting a phishing or redirection attempt. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to lead users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://traffine.ru/aws?keyword=compton+police+shooting+news In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/geradi/33552804849.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b33b4a19-1ccd-4805-8348-10081c771e19/79013314000.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc7c122a-45f3-458d-89a0-297712d2d0d4/61716125464.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/423a926c-0a6e-4ed7-89a6-39184d22cec8/goodnites_coupons_de_matelas_jetable.pdfIn PDF document text
    • https://s3.amazonaws.com/vuzufexarevima/self_employment_income_statement_template.pdfIn PDF document text
    • https://tirutijupez.files.wordpress.com/2020/11/87397976515.pdfIn PDF document text
    • https://s3.amazonaws.com/rokuwapesu/journal_star_obituaries_peoria_il.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a02762e6-1236-40c7-a1d5-1f287fff81ab/zotolawisusute.pdfIn PDF document text
    • https://s3.amazonaws.com/xisefowu/7775957101.pdfIn PDF document text
    • https://xomujunu.files.wordpress.com/2020/11/56143571898.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f82c349-08f8-43fc-b449-12bae09384c2/34355964922.pdfIn PDF document text
    • https://direpupiwabe248790905.files.wordpress.com/2020/11/jaluzuredod.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_off00006022.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6022 5036 bytes
SHA-256: e0c7b72905c3d148499417d4d57e31c466d65e3e24d3f1cece73a3a8237abd10
font_01_sfnt_off00007132.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7132 10512 bytes
SHA-256: f65ebefe3c2f553f4741b6b73dbb42e6c7420b6c82d39f9871875179f8898faf

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