Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ee7cfe702df5630…

MALICIOUS

PDF

39.9 KB Created: 2020-11-03 07:51:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 8540e3bafd9d4d8e2f48af45b6a1a48a SHA-1: b1200ca31aa1a4161426276ebe690730bd804412 SHA-256: 4ee7cfe702df5630c31afb273ee5b6c203246e270fe5363789b3c7d141dff91c
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, with one identified as a malicious redirector. The document body, though heavily obfuscated, appears to contain text related to a worksheet and the malicious URL, suggesting a lure to a phishing or malware distribution site. The ML classifier strongly indicated maliciousness, and the presence of a redirector link supports a phishing or redirection attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://ggtraff.ru/aws?keyword=lord+of+the+flies+worksheet+chapter+1+answers In PDF document text
    • https://besiwalufeg.weebly.com/uploads/1/3/2/6/132696214/limin_razubutakuxot_pepaxakofotes_mofaka.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/35309b79-14f7-4d59-913b-c16a66e4b6bd/just_build_lol_unblocked_games_88.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1f32af8-fa26-4161-926d-6f745616501a/fox_labs_pepper_spray_for_sale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1082d919-6c55-4dd5-b4bc-c486ade4761b/funcion_valor_absoluto_dominio_y_rango_ejemplos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e73f552-d9b0-42a2-992e-b39576c48938/87135394358.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/9377/3476/files/how_do_you_make_a_bookshelf_in_minecraft.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3c8d06f-5a41-42da-b3ab-68145aca0a45/four_rightly_guided_caliphs_timeline.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e5e75cd-8614-425d-9dc0-faeddcc895f0/lovosises.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f1d6bf6-e485-4479-b810-d5bc2fc5d71b/xudunotutunipomamogitexe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3588/5721/files/75500498709.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/423c0fa8-1b53-4876-844d-b7310113abe2/52354490385.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/0533/1616/files/77306042020.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_off00005bf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BF8 5392 bytes
SHA-256: ba731f222eeea7f8ab4cd4f03c20ba304a5954b7e31d7f09cf07cd3df99b042a
font_01_sfnt_off00006e69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E69 10732 bytes
SHA-256: 4d3a09cc3705e2b223c661ba24cc8f680412033338e72c8a3ae60719cdfeb6e2

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