Malicious PDF — malware analysis report

Static analysis result for SHA-256 97d416b38d2df878…

MALICIOUS

PDF

36.3 KB Created: 2020-10-11 11:50:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 4d1f948d688b05dd4e2682f48e80e6f5 SHA-1: ccd154c6164fca52927356715f6b47d33425b2bc SHA-256: 97d416b38d2df87880f69431087b03b3b4e501ad06a1bfa4a7132243bdc86907
124 Risk Score

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.link/pify?keyword=andrew+jackson+elementary+lawton+ok In PDF document text
    • http://xogex.secondhomeba.com/uploads/1/3/0/8/130874655/bakuja-gekujav-sikog-megakarigo.pdfIn PDF document text
    • http://files.jeffcofiretraining.org/uploads/1/3/1/4/131453213/91647.pdfIn PDF document text
    • http://files.elizabethcromano.com/uploads/1/3/0/7/130740556/wurejo-wavaxig-gusenibo.pdfIn PDF document text
    • http://files.cantonliterarymanagement.com/uploads/1/3/0/7/130776536/2117967.pdfIn PDF document text
    • https://site-1038558.mozfiles.com/files/1038558/48356596273.pdfIn PDF document text
    • https://site-1036816.mozfiles.com/files/1036816/gukepulibaj.pdfIn PDF document text
    • https://site-1040339.mozfiles.com/files/1040339/81984798549.pdfIn PDF document text
    • https://site-1039360.mozfiles.com/files/1039360/xivokexoxerexeguwodoneb.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/1/0483/0504/5668/files/95943683933.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5733/9813/files/lets_go_to_golgotha_read_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8496/2199/files/tevitotenufuvisapad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4385f213-87e4-4341-bfc6-45cc70022e5a/76303628674.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b46e7b2-6557-4903-a09c-9d67b145ad89/68452911465.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf87fff6-ccdf-4326-81c0-1c0a0a2afb6a/tetejesoxabofusafuwe.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_off00005005.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5005 5408 bytes
SHA-256: 1df2ac1198365ec9e7d34af5ccb5356faf179409127f08606eab411c13bfd030
font_01_sfnt_off0000626a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x626A 9872 bytes
SHA-256: dd85bf2bf043dab3989901e7f90c418a5eb9aa7afca19d9fd9f5f024515f135b

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