Malicious PDF — malware analysis report

Static analysis result for SHA-256 c72752012999f183…

MALICIOUS

PDF

40.8 KB Created: 2020-11-01 14:14:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: d818c92add911838e5b6d28a4a487b6d SHA-1: 9df9670876f5cc39fb812e3e60dcc63110f2ba53 SHA-256: c72752012999f1830da59787d9e2406e551efed160c9d9f5095fd0c8eea8f292
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.link/123?keyword=toa+metru+combiner In PDF document text
    • https://cdn-cms.f-static.net/uploads/4412415/normal_5f9ba74a6d9a7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376127/normal_5f8ff01f1fcc8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393624/normal_5f99289441ccb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391642/normal_5f9bafcddb6cf.pdfIn PDF document text
    • https://loropigofog.weebly.com/uploads/1/3/4/5/134595907/e2b4161711b.pdfIn PDF document text
    • https://fobedixosofano.weebly.com/uploads/1/3/4/3/134377241/wofodekofasumawo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367919/normal_5f9065275cf2a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414491/normal_5f945fba93888.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/c95b0f7d-b032-4974-aab3-3e5357a7c790/19461510972.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/8994/3455/files/69179367805.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7021249d-d7fa-4692-9ec6-facdee047d21/8045996854.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_off00006323.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6323 4824 bytes
SHA-256: acbcc000313e646c96f6a0ae29db0173c7deb5c2ecfd070298ea2929bef25ef3
font_01_sfnt_off00007376.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7376 10264 bytes
SHA-256: fbafdb5cf947383cefead82464e8eb3ddb5a5ddd88bce5ad1a6cfe7d364fc55d