Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fb1e33e07290f33…

MALICIOUS

PDF

32.9 KB Created: 2020-11-09 12:12:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 0d09723fcdfdf9a4e135cca278db5520 SHA-1: 1ee855d8113e56d86afb1a1c92750e4e422023ba SHA-256: 0fb1e33e07290f33930621a13c50de900b127ff14afbed5b432b77267d65d396
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/123?keyword=us+maps+quizzes In PDF document text
    • https://cdn-cms.f-static.net/uploads/4489994/normal_5fa905069381c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380887/normal_5f9cf24dadaac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403260/normal_5f948753d0e24.pdfIn PDF document text
    • https://bajusumuke.weebly.com/uploads/1/3/2/7/132741128/zatuzusesasola-nusigu-dewozukafiben.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373504/normal_5f89f1a27427e.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/bevarolimesale/phil_swift_flex_tape_wiki.pdfIn PDF document text
    • https://s3.amazonaws.com/bulikowexunepov/only_god_can_do_it_song.pdfIn PDF document text
    • https://s3.amazonaws.com/vidadaviwal/alphabet_phontique_pompier.pdfIn PDF document text
    • https://s3.amazonaws.com/fatikonavori/95409901780.pdfIn PDF document text
    • https://s3.amazonaws.com/wifozuxeku/27839907941.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/swing_trading_patterns.pdfIn PDF document text
    • https://s3.amazonaws.com/tunenijexe/greenway_shooting_range_bozeman.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_off00004528.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4528 5004 bytes
SHA-256: a93747f1f158d86ef38756197a1fa9b5ffb326933d156c341fb91f636f1fd73d
font_01_sfnt_off0000562b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x562B 9728 bytes
SHA-256: e575e5ec070ba8094e5a750718d3b95cc84941f0336dd7280d25ada15832aa58