Malicious PDF — malware analysis report

Static analysis result for SHA-256 889292539000f7b9…

MALICIOUS

PDF

47.2 KB Created: 2020-10-04 07:44:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: fb8a91802237cf21b7f23d7d72082b07 SHA-1: ff0940a7605e1bee31c38420c25ee098b629e5b5 SHA-256: 889292539000f7b953ee0c2ffc55ec64b3dafce23d5407a08cb7f95827596ab5
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://gettraff.ru/strik?keyword=tamilrockers+1080p+bluray+movies+dow In PDF document text
    • http://files.thegreenhouseac.com/uploads/1/3/1/0/131070520/vupubolatirunaw.pdfIn PDF document text
    • http://files.millinocketnazarene.com/uploads/1/3/1/4/131453821/fopirele_minoxir_datalip_pubezuzox.pdfIn PDF document text
    • http://tunox.carrotpatchkids.com/uploads/1/3/0/8/130814124/kilidagariz.pdfIn PDF document text
    • http://barinala.adhdpatrick.com/uploads/1/3/1/4/131454120/3544456.pdfIn PDF document text
    • https://site-1036733.mozfiles.com/files/1036733/wekiri.pdfIn PDF document text
    • https://site-1039624.mozfiles.com/files/1039624/dopizuguniwinupasij.pdfIn PDF document text
    • https://site-1036821.mozfiles.com/files/1036821/2778313458.pdfIn PDF document text
    • https://site-1036814.mozfiles.com/files/1036814/fomewipabagufabativegazan.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/ae307797-46b5-4f3e-b07e-bcdcac4780b4/nafajujo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38456347-666e-485c-afae-c865f844e382/13641561924.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a010fb3-a11f-4a84-baae-2cd58e8e1316/remenerekixive.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/938991ff-6026-494b-aa19-4cdcdd13d5fb/gadamuwobalolesa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f179c8b3-a17a-4fee-8540-16265d3726c8/wazefebafopeponodaxe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af82a3cc-6229-423b-8053-0f710f09017e/rovitalunivuxakuxajuxevus.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_off00006947.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6947 3872 bytes
SHA-256: fbca460abebc95ca3cb4a294d8eeef8f225d5041ed5cf2ccb9cbb7f98956c752
font_01_sfnt_off0000772e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x772E 6016 bytes
SHA-256: f48ad7f194d95680fa31133863dc38e24bedd44007396294f621bbaf534fe429
font_02_sfnt_off00008ba7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BA7 10508 bytes
SHA-256: 85b1ac75e2f206c5294e510065b6b4f375bae6d9bdb16afa96ccab6b91cf3eda