Malicious PDF — malware analysis report

Static analysis result for SHA-256 0460b5b657c21b9d…

MALICIOUS

PDF

40.6 KB Created: 2020-11-06 14:37:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 44860259fbb8db661ab669b815519e6f SHA-1: 2ce98f32529dfc71d71a7dc0995af1e8444a11b3 SHA-256: 0460b5b657c21b9ddb0654ade406b2d0fb50743f0eef49fe16e5875108656095
94 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by 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 1.0000

Heuristics 3

  • 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://traffmen.ru/strik?keyword=c%252B%252B+turbo+app+download In PDF document text
    • https://cdn-cms.f-static.net/uploads/4404299/normal_5f920440a1eda.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387218/normal_5f9c731568b08.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378152/normal_5f90bbd9bd77c.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/32e063a95e.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/matogapibelifiv/piwaxozesokuzi.pdfIn PDF document text
    • https://s3.amazonaws.com/levovod/car_racing_games_unblocked_games.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/2185744643.pdfIn PDF document text
    • https://s3.amazonaws.com/dedinavesute/hotmail_sign_in_outlook_live_mail_inbox.pdfIn PDF document text
    • https://s3.amazonaws.com/nitirew/69693943620.pdfIn PDF document text
    • https://s3.amazonaws.com/napejaxosinages/twilight_zone_escape_clause_script.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa462341-6b44-4e2c-b408-e11bb0eaab84/sfusd_calendar_2020.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_off0000612f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x612F 4912 bytes
SHA-256: 90645e2a9747067c3323b6e3f547c1f1771f9db83ae94ceb2328ed5f0d2948f1
font_01_sfnt_off000071f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71F8 10532 bytes
SHA-256: f9bd61858971ec676feaa06a86f90768faabb6eb2c27cd7fad1be64a7f6ccaf1