Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0f6b2400be29a04…

MALICIOUS

PDF

37.0 KB Created: 2020-11-01 09:40:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 0548a007d00d58dcfe724bf411583677 SHA-1: d2265abdf747187fb99333fa495c00f892beb5da SHA-256: e0f6b2400be29a0479c77f6a8ff006dee255801f4c45096ef64efc51d35fe227
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=pennswoods+classifieds+ads+trailers In PDF document text
    • https://cdn-cms.f-static.net/uploads/4383322/normal_5f9dfde85aa4c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384029/normal_5f99add5c923f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380383/normal_5f8cbdb1192cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413457/normal_5f9df30724327.pdfIn 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/1/0502/5520/0447/files/75323405082.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/315dfbbd-d3fd-49cd-bcdf-1a21acc90f09/40413344854.pdfIn PDF document text
    • https://s3.amazonaws.com/dixaleko/pandora_9d_specs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62d5cbb4-a7a6-4933-b0da-3cc3f746f3e7/zeripojobonat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3855874-4f84-4e16-bc64-21fb5cfe3f85/ridurikunolome.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5dec58e-5dc7-4869-9407-34554277939e/17234083840.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/643037fc-5dcb-4d09-bc4d-64d983fbdf35/jujafigenijopekasovevowo.pdfIn PDF document text
    • https://s3.amazonaws.com/wotodedaruzuk/juvawimemotaruwuduro.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_off00004f55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F55 5108 bytes
SHA-256: 50803403638e69bfeabdbe2da4197802cb2b430c4c1e3ebcf891beb259b7a29e
font_01_sfnt_off000060d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60D7 12068 bytes
SHA-256: 739ebe6f9e997a6dc06974241a856a8a15176bd317140602a1b9a073a8a50838