Malicious PDF — malware analysis report

Static analysis result for SHA-256 7438cae72699c300…

MALICIOUS

PDF

70.5 KB Created: 2021-02-12 21:44:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 1dd0d3d11e4eeba816549948a506bcc6 SHA-1: c3c3c8b67dc08527e90515556255158725288f12 SHA-256: 7438cae72699c300fe026ee0ebe2574c2b5e3fdffbb797f74a87eb41d55e8b48
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://jottigo.ru/wix?keyword=julius+caesar+annotations+act+1 PDF link annotation
    • https://cdn.sqhk.co/tupipitijil/FhdG3cM/niwupirubisiz.pdfIn PDF document text
    • https://vorupegesozuzow.weebly.com/uploads/1/3/1/4/131453293/wufajejegefif-vogewabiz-viwimidiradodux-zanezuludak.pdfIn PDF document text
    • https://vosuzujil.weebly.com/uploads/1/3/2/6/132681517/9170642.pdfIn PDF document text
    • http://vvinorama.fun/rossmann_prospekt_bltterkatalog08zlz.pdfIn PDF document text
    • http://powerhdniy.space/analytical_job_interview_questions_and_answerszf8ue.pdfIn PDF document text
    • http://reduslimitaly-ufficiale.website/can_t_catalina_installer2ksm0.pdfIn PDF document text
    • https://cdn.sqhk.co/metexemoraga/g5icb0K/bumafesedipam.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421477/normal_6006526d60361.pdfIn PDF document text
    • https://cdn.sqhk.co/rewakevutel/QjhJhic/ladukuvajoz.pdfIn PDF document text
    • https://cdn.sqhk.co/wovegase/bgdsdic/build_it_yourself_book.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366660/normal_5fe4e735a0064.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464862/normal_601ebd7440259.pdfIn PDF document text
    • https://cdn.sqhk.co/vopofuxo/gOW4SmF/xuforuxusopifa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463785/normal_5fd13e2ca0dda.pdfIn PDF document text
    • http://ogranicbio.fun/business_writing_for_dummies_natalie_canavor7x8sh.pdfIn PDF document text
    • https://ziperivowupidu.weebly.com/uploads/1/3/1/3/131381589/vobimaxe.pdfIn PDF document text
    • https://cdn.sqhk.co/matijamaj/geLeyYm/sijowuzikusikir.pdfIn PDF document text
    • http://classicalnaturally.com/watch_catch_me_if_you_can_online_free_123moviess39jm.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d974.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD974 4836 bytes
SHA-256: 664604951b84117259be18636cf49e7e3b8d2421e09d77e3f98c1de64f6b2968
font_01_sfnt_off0000e9f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9F4 10088 bytes
SHA-256: 2897dc350a5bd6527541bd82ccecbde0ef9ef5dfc82a52248e2ae3ee6b80c98b