Malicious PDF — malware analysis report

Static analysis result for SHA-256 05574e03f78afb87…

MALICIOUS

PDF

35.8 KB Created: 2020-11-07 19:56:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 8cf50865cd33a512134c2d12a6b264aa SHA-1: 4d70fb9e23cc04026c0035d5f7c03220475227ed SHA-256: 05574e03f78afb879fd752b55f85d6162046f45cba04d8f8c81080c839985565
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://traffine.ru/aws?keyword=sharp+carousel+2+convection+oven+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4408176/normal_5f99a00747bfe.pdfIn PDF document text
    • https://mupaxezofede.weebly.com/uploads/1/3/4/3/134317166/wobasurelukeb_xevepefa_munasesoxodiges.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414868/normal_5f97a37b7178b.pdfIn PDF document text
    • https://netaluzubik.weebly.com/uploads/1/3/0/8/130813777/kavavevulufaz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://bomeviw.files.wordpress.com/2020/11/91798184258.pdfIn PDF document text
    • https://tetekezulax.files.wordpress.com/2020/11/beautiful_in_white_violin_sheet_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50b87e5b-f261-4175-abda-6b4ef86dec95/2931852458.pdfIn PDF document text
    • https://nuvinifiraf.files.wordpress.com/2020/11/10260595233.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1240c80-ce5f-4e57-9015-5fd2f0c45d29/56345770686.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0ef92b0-deec-435e-b2e1-9e8e232a8662/97586448013.pdfIn PDF document text
    • https://s3.amazonaws.com/jupevuxirapi/lowajebepefowokifi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65af4786-b80f-48f8-83fa-a2b675333908/true_way_asl_answers_unit_1.pdfIn PDF document text
    • https://besarividem.files.wordpress.com/2020/11/40952199815.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87283357-ea5b-4c14-944d-c02a6e182ed6/68211726869.pdfIn PDF document text
    • https://wirejodumab.files.wordpress.com/2020/11/nixumepoto.pdfIn PDF document text
    • https://mivepir.files.wordpress.com/2020/11/capitulo_5a_core_practice_5a-_3_answers.pdfIn PDF document text
    • https://kiwowet.files.wordpress.com/2020/11/39347431181.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_off00004798.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4798 5468 bytes
SHA-256: b160259ac2da0f592dc6c353945e03ece7e02d15dec581534d5686e9ac6f4794
font_01_sfnt_off00005a0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A0E 12352 bytes
SHA-256: eb0748635c91b4e5d52677bd34bf02514dbab99c3fb2325ac4d200cbc4bf7fbe