Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e5003ef47162959…

MALICIOUS

PDF

42.8 KB Created: 2020-10-30 20:20:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 84e972c17d5425d7dec9072cb7972033 SHA-1: dc6cec8c722c1f8a6ae546871cfa1644bcf8be76 SHA-256: 9e5003ef4716295953fa9fa1a3bd64a92572b5e6088907e4b045078c111b2e60
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.club/pify?keyword=des+moines+phone+book In PDF document text
    • https://cdn-cms.f-static.net/uploads/4408460/normal_5f962905084f1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403681/normal_5f9bd5d797ccd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379849/normal_5f97215bd5a83.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366652/normal_5f880b244f4fd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407313/normal_5f91fff490d24.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390051/normal_5f8dbe1230b78.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370764/normal_5f91a371a177a.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/14ead2d5-fe6d-40ce-833a-8cd9ca69d94d/31895253910.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80ce45bf-18d3-46ce-9efb-ff22b68c8232/gothic_1_dusty.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/8453/2891/files/27023003812.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bcf7759a-96d6-44d8-9285-6b1295448f2f/bright_and_morning_star_richard_wright.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e58ed7cd-cc53-4e19-8781-1d79a2105427/donde_bajar_partidos_de_futbol_completos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/4410/7950/files/tikini.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_off000069b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69B3 4924 bytes
SHA-256: 47566285828a6680963b2b62bc7614c161e60e343296e10de189e7a0e0d117e4
font_01_sfnt_off00007a54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A54 10804 bytes
SHA-256: abaaaef550ef311cd16832943e87e4f05eb09b311890e9fe910a102c8bbabd7e

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