Malicious PDF — malware analysis report

Static analysis result for SHA-256 faebbc3de93fb89a…

MALICIOUS

PDF

51.0 KB Created: 2020-11-03 03:08:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 85a60ea59f98cdbbc8e852d7b27347f9 SHA-1: 1a79807a9249f7d11b1b4b40a3f95e421745945d SHA-256: faebbc3de93fb89ae5b5494187f25f5e17ce22a98009217c2e55a378b0e8ce79
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://gettraff.ru/aws?keyword=top-o-matic+parts+diagram In 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/1f42f380-b5b0-49d5-ac1c-9ad124c6a43c/eureka_brushroll_clean_belt_replacement.pdfIn PDF document text
    • https://s3.amazonaws.com/gifiz/14915672010.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2461/2509/files/hyperbolic_secant_distribution.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/3602/4225/files/bepomidadavo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6390e65f-189a-497d-8310-0721a6d6b1be/89851045564.pdfIn PDF document text
    • https://s3.amazonaws.com/jubiferekaka/vocab_workshop_level_f_unit_6_antonyms.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/0617/9504/files/11225799097.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39db23be-bd52-428c-8b61-317b654bd0ac/77845628217.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2d6cee6-fdb4-4107-a182-6397aa2a07a1/wellcare_wellness_rx_2020_florida.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0be9f12-2085-4e0b-b60a-c97f24aa1c27/pijapivonulosatedis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6963/4715/files/zikaluko.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef4ee735-2a0c-4c85-a228-4987b7a5fabb/pijewovabev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/7313/4492/files/agile_project_plan_template_excel_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/jexijer/61691970388.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6321/3209/files/character_worksheet_grade_1.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95ae7c8b-b0f1-4943-abf1-b160a311499b/rudalezurivofopomasoxafov.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007ddd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DDD 5340 bytes
SHA-256: 31da83b964f94d77dc8409721330cf03365b22dbb64acc2788b25eb68ac71225
font_01_sfnt_off00008feb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FEB 1800 bytes
SHA-256: 51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0
font_02_sfnt_off00009879.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9879 11156 bytes
SHA-256: 43361f147962ee2c851fcb7f3217d0e533b220adf35cfb9d08a8c2e93290ecd9

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