Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fa12ef6ad4e3f00…

MALICIOUS

PDF

69.5 KB Created: 2021-02-23 19:25:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: dc3e3c36f7ee402c7d1fd44fa6b4d744 SHA-1: 36788954206587b2cbf26ea0efabb9201cdf69c4 SHA-256: 2fa12ef6ad4e3f0064ec2760ad435026b016e9c211e66eab881d9493939f7b5c
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://baarspo.ru/wix?keyword=southbridge+high+school+graduation+2019 PDF link annotation
    • https://sokifaxus.weebly.com/uploads/1/3/4/6/134666683/gogediduwazu-keluse-vofidukulawig.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373261/normal_602ffa3d142ce.pdfIn PDF document text
    • https://mujolimu.weebly.com/uploads/1/3/4/8/134868529/5267330.pdfIn PDF document text
    • https://cdn.sqhk.co/fizuborugas/ZibifGU/light_up_reindeer_outdoor_walmart.pdfIn PDF document text
    • https://xadutodibuj.weebly.com/uploads/1/3/1/1/131164520/4192724.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427085/normal_5fdd316128398.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380523/normal_5fd9b0f427288.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459177/normal_600ffd365215b.pdfIn PDF document text
    • https://juxibawazorar.weebly.com/uploads/1/3/3/9/133997202/709184442ce47bb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456135/normal_6002386db7a9e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391009/normal_5fdc0becbe472.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/nagudo/project_jojo_weather_report_requiem.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatofubote/brc_full_form_in_army.pdfIn PDF document text
    • https://s3.amazonaws.com/bitajemisajoz/noladafiger.pdfIn PDF document text
    • https://s3.amazonaws.com/sesijesule/continuous_wavelet_transform.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_off0000d156.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD156 5924 bytes
SHA-256: c8eec45df5546d44a4ec4128955851cf54d53e362958965140f9cd4357426e9f
font_01_sfnt_off0000e575.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE575 10332 bytes
SHA-256: 034898ea61af26d22cdf53ed40044ecb2cf51eddc3b3fa26272582fca35920b7