Malicious PDF — malware analysis report

Static analysis result for SHA-256 889d7a1136c867d2…

MALICIOUS

PDF

39.6 KB Created: 2020-10-30 14:50:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 737c6a58d88df801830451de9f9e2738 SHA-1: d8049e3cafbfbf0ed2e455cad267ad991ec933a0 SHA-256: 889d7a1136c867d20fe8e9caf5cf0b6e9bf48e4fe31dc6ebf19d920864daffa5
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://ttraff.cc/123?keyword=auburn+ny+school+district+calendar In PDF document text
    • https://cdn-cms.f-static.net/uploads/4383300/normal_5f8bbcac24750.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408709/normal_5f973478e82b1.pdfIn PDF document text
    • https://mufebukevep.weebly.com/uploads/1/3/4/0/134096334/darab-watukid-labumi.pdfIn PDF document text
    • https://dupizonax.weebly.com/uploads/1/3/1/3/131380343/9445205b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370777/normal_5f8f6e6dba585.pdfIn PDF document text
    • https://sitizoxibe.weebly.com/uploads/1/3/4/3/134317871/23eac23237f9f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375075/normal_5f914c5e1cc22.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417128/normal_5f9ae7464f615.pdfIn PDF document text
    • https://mipirizu.weebly.com/uploads/1/3/2/6/132682564/balajasutur.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/biwubeleba/adobe_acrobat_8_scan_to.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/blowin_in_the_wind_chords.pdfIn PDF document text
    • https://s3.amazonaws.com/zobuwubedak/captain_marvel_hd_stream.pdfIn PDF document text
    • https://s3.amazonaws.com/dujepav/jemowuzoxotesolewojitebu.pdfIn PDF document text
    • https://s3.amazonaws.com/zinudipir/17639455067.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_off00005cfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CFA 5256 bytes
SHA-256: b549ae646edf63b1066aad3ec7b02bc88a3bd591f41edea43989b0fca5af3abd
font_01_sfnt_off00006ed7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ED7 10156 bytes
SHA-256: d5027e099d1ec1602a0240b088c85248faa95ae29a757259888c26955e8ccd0a