Malicious PDF — malware analysis report

Static analysis result for SHA-256 113d069df5360af4…

MALICIOUS

PDF

42.7 KB Created: 2020-11-04 20:14:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 8525b604c28efa7440d03651194c81af SHA-1: d182b888d965bb254f1e298a44cd0523d4b3e30a SHA-256: 113d069df5360af4ff609ee61b4eadd96259fc135c014fa67e83375032804ff8
154 Risk Score

Malware Insights

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

The PDF contains embedded links and text referencing a "bakery story hack", directing users to the malicious URL https://gettraff.ru/strik?keyword=bakery+story+hack. This heuristic firing indicates the document is designed to redirect users to malicious infrastructure. The ML classifier also strongly flagged this PDF as malicious.

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://gettraff.ru/strik?keyword=bakery+story+hack In PDF document text
    • https://siwikuzovusodig.weebly.com/uploads/1/3/4/3/134357046/9718376.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374207/normal_5f8be886b116a.pdfIn PDF document text
    • https://fevixivosetakub.weebly.com/uploads/1/3/2/6/132681861/wunoteb.pdfIn PDF document text
    • https://vekejuritikoj.weebly.com/uploads/1/3/1/8/131857631/pazebazew.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/ribowexulo/lochia_types.pdfIn PDF document text
    • https://s3.amazonaws.com/retobifulipo/nofuralanofisifoxoge.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/wetipuvajirovodipomiz.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/manual_basico_de_auditoria_interna.pdfIn PDF document text
    • https://s3.amazonaws.com/sedimeraxufi/york_early_college_academy_ranking.pdfIn PDF document text
    • https://s3.amazonaws.com/firigugixujotov/zofegotesitiz.pdfIn PDF document text
    • https://s3.amazonaws.com/mamukawaxatali/shadowrun_sixth_world_classes.pdfIn PDF document text
    • https://s3.amazonaws.com/luresimosip/83641797796.pdfIn PDF document text
    • https://s3.amazonaws.com/zesotat/como_jugar_clash_royale_en_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/gezetega/27359587792.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/sizigim.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_off000069dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69DD 5068 bytes
SHA-256: 9c49822fd8ba1b0a051b800cf713877f2a4ec65058958a2a84083225f2f0b458
font_01_sfnt_off00007b23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B23 10196 bytes
SHA-256: 7e90927f9e000f9389b3b21c5e287b85299da940036095a284871a8335bf7efd

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