Malicious PDF — malware analysis report

Static analysis result for SHA-256 89c659bbb34ea703…

MALICIOUS

PDF

40.5 KB Created: 2020-10-03 07:21:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 58bfe27ef0690831f43e7f596d54fde4 SHA-1: be2c56405fbbf09c1062bb0b67088c0f9ebe672d SHA-256: 89c659bbb34ea703b692ea742fb03f97f169a36da09e91efc5e9ef17f6c99e31
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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://ggtraff.ru/strik?keyword=rocket+league+free+keys+ps4 In PDF document text
    • http://jinika.olliefabracing.com/uploads/1/3/1/4/131406270/1379110.pdfIn PDF document text
    • http://runavun.growth-ministries.org/uploads/1/3/2/7/132712237/d0ac9dd3.pdfIn PDF document text
    • http://files.stlcreativelandscapes.com/uploads/1/3/2/6/132695629/4094463.pdfIn PDF document text
    • http://baduvov.jacquelinecutler.com/uploads/1/3/0/8/130814229/76e426f43da.pdfIn PDF document text
    • http://files.thinkglobaly.com/uploads/1/3/1/4/131438899/9999178.pdfIn PDF document text
    • https://site-1038765.mozfiles.com/files/1038765/tusubijofose.pdfIn PDF document text
    • https://site-1040278.mozfiles.com/files/1040278/81411529475.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/665a5223-29be-4da0-8d03-3f6cf6441536/ziliru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e44a4cb1-063c-425c-8055-0584e58920bc/36897377222.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/023a1ceb-e5cd-4972-95d5-556de10da05c/buwizofunenibanegijedafij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a9bb880-b0fa-4bd3-a940-e773d97583a7/lotajukalopoxedol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f989dd3-a67d-47e7-bb90-a7b18b413570/kodegeweras.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a85165d7-32e0-4d2b-a839-33307023a773/57750389454.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/beeff33f-d959-481b-882c-afc000a02dc2/xubofarelo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aec7b53a-1bb4-4aff-a5eb-3f575d629f72/liwizirexafimolozadejedas.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_off000060b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60B7 5444 bytes
SHA-256: 939728fdca873e3f52c6d8e76bcbdf912db9569c0ee4856c531834778bf7212d
font_01_sfnt_off0000736f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x736F 9880 bytes
SHA-256: 5ec9b0d1140c1f6ce8fd9a47e2f5f3139de126dc04ed746539940fcc6f9ecf98

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