Malicious PDF — malware analysis report

Static analysis result for SHA-256 12a99ed585e40230…

MALICIOUS

PDF

39.6 KB Created: 2020-11-02 18:23:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 1fb053d6e395f0ef5cf1f6a6d1a39d9b SHA-1: d9c0f0de30726f682d41275f9afad952731df968 SHA-256: 12a99ed585e40230255c7620679557c638b096bec16f1b9c8bba88be487646ce
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://ggtraff.ru/aws?keyword=bics+vs+calp+levels In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/8387/2453/files/november_2020_calendar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51f1ce89-dd74-431f-99c5-fc9efda0d79c/87629791212.pdfIn PDF document text
    • https://s3.amazonaws.com/dumupa/54909953823.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d67729af-2fc7-4e52-a732-87c043275b30/kenmore_heavy_duty_70_series_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/832b2981-ea13-4d6d-b2cb-84ccf9b4e884/propiedades_del_aguacate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9550/6592/files/55674693100.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9462/9786/files/garuveriraf.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/rerodurodu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0510/3720/8741/files/extra_credits_history_reddit.pdfIn PDF document text
    • https://s3.amazonaws.com/guwutivupudutu/vijijukatijupipezokaza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/1811/2154/files/elementary_principles_of_chemical_process.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cec34538-e008-41c8-97eb-c9972b604352/fulugodabaletemuwomodi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1007/2481/files/repamomimeraji.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_off00005cea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CEA 4940 bytes
SHA-256: 65772ce0a6d6beb109db8a5d95257645dda9c8c5b391a1acef8ace88ef26cc76
font_01_sfnt_off00006dd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DD8 10832 bytes
SHA-256: 146c54bd0034e693a674168979fdb9292ced436bae5613bcc55af77775c7c10d