Malicious PDF — malware analysis report

Static analysis result for SHA-256 da678e94fcfcd09a…

MALICIOUS

PDF

40.7 KB Created: 2020-10-30 13:54:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 1145767f512cc5212701aba6cf77bc64 SHA-1: 21f2ca26b11f638a0befcbf0053a87d9a7606078 SHA-256: da678e94fcfcd09a49d2ff5088079463a2e075a3af4afee1307f1322dcc30f9a
94 Risk Score
Tags
free-cdn-ebook-manual-lure

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.com/123?keyword=signature+by+levi+strauss+%2526+co+shorts In PDF document text
    • https://cdn-cms.f-static.net/uploads/4393628/normal_5f90d1a26f6db.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380691/normal_5f8bdaa03d9cc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407998/normal_5f9a774fb7aad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369305/normal_5f8843af570b4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366665/normal_5f973794ef30b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389127/normal_5f8f4d03aaeef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372980/normal_5f8ca001112bd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393190/normal_5f949e7a2e53d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382974/normal_5f9887253d07e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390680/normal_5f94b37b17d89.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378843/normal_5f953bbf8e3d0.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/4bf65114-4277-4ed4-b447-a75cf8fbf460/53130809396.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63331b56-6d13-447d-b139-e709c719beb7/renob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9e94571-1cff-4ae6-a928-f9a3bda576fb/kansas_fishing_guides.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4bc86c7-2fd8-43a3-8aed-46059e518886/wavepad_audio_editing_software.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_off00005ce6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CE6 5260 bytes
SHA-256: 0b3124f7997d6aa4284f157c9fdcbddd48eaa619c0798ffe7826b582792f4f68
font_01_sfnt_off00006ede.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EDE 11644 bytes
SHA-256: 03fdd60d5cfad055e2464412700898d4d4c2e612bac501ad0c955ecb9416aab7

Open this report in the interactive analyzer, or submit your own file for analysis.