Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2e3d5052d893cec…

MALICIOUS

PDF

42.3 KB Created: 2020-11-01 21:59:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: fce6fc903ba2c02c94e7ac2fbf7cad3e SHA-1: 6ecbf1f4ad842199ac72c1cf6798a6cb5f90297c SHA-256: b2e3d5052d893cecd9a592d93480e5a76c679de08ba5942d31587f4e9e58c999
94 Risk Score

Malware Insights

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

The PDF contains a heuristic firing indicating it links to malicious redirector infrastructure, specifically `https://ggtraff.ru/aws?keyword=nike+job+application+pdf`. The document body also contains this URL, suggesting the primary purpose is to trick the user into clicking it. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed for malicious redirection.

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://ggtraff.ru/aws?keyword=nike+job+application+pdf In PDF document text
    • https://bogadisosupotaj.weebly.com/uploads/1/3/0/7/130776541/f03c1182fc06f.pdfIn PDF document text
    • https://kusebedanosude.weebly.com/uploads/1/3/1/1/131163667/danusetixoxagoje.pdfIn PDF document text
    • https://ziripovopibew.weebly.com/uploads/1/3/0/8/130874468/d6f9460d9e.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/7904132.pdfIn PDF document text
    • https://wepugimi.weebly.com/uploads/1/3/1/0/131070973/jupigimovizatal.pdfIn PDF document text
    • https://duxevuwelinabim.weebly.com/uploads/1/3/4/3/134353564/3924379.pdfIn PDF document text
    • https://samomalekadoj.weebly.com/uploads/1/3/1/4/131438786/bc56b99.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/jeworurowam/do_lizards_bite_wires.pdfIn PDF document text
    • https://s3.amazonaws.com/vifusupegiza/46982809102.pdfIn PDF document text
    • https://s3.amazonaws.com/zategafozasiru/pomenunogiguzazogamodar.pdfIn PDF document text
    • https://s3.amazonaws.com/kikunojulejuj/bulgaria_visa_application_form.pdfIn PDF document text
    • https://s3.amazonaws.com/zukukelejurotef/lusazilotubiremiluxuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/0241/2196/files/bekesuwuxotofatenupidepan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/3127/9791/files/kenivobuwi.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/charlie_brown_christmas_music.pdfIn PDF document text
    • https://s3.amazonaws.com/zarusegibitumet/when_caring_for_a_client_with_pneumonia.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_off00006975.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6975 5124 bytes
SHA-256: c3fa4416c30d45c0bb5dfef930c8142104407fc236536ccd5dac69f05d93a9b3
font_01_sfnt_off00007b03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B03 9744 bytes
SHA-256: ecab405071775931b852e2c12d034cbd45aa16e990ece4e97fb933cd8ca78f6b

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