Malicious PDF — malware analysis report

Static analysis result for SHA-256 62166f55ff679f2f…

MALICIOUS

PDF

68.8 KB Created: 2021-02-12 15:00:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 1372b90482a6c9dfe82870be7a3f8f6e SHA-1: ad8a3153d0c12b408c8956ba29e9e2c3a18653b0 SHA-256: 62166f55ff679f2ff4f7aa8d0718c40c210d74a11ea1ad479acf0e16c8ee4876
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://druttle.ru/wix?keyword=add+subtract+multiply+polynomials+worksheet PDF link annotation
    • http://abistrans.ru/292256018445q51c.pdfIn PDF document text
    • https://sijujufe.weebly.com/uploads/1/3/4/6/134696532/wezavixerugorurokab.pdfIn PDF document text
    • https://kuzosilu.weebly.com/uploads/1/3/2/8/132815793/2217143.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402951/normal_5ffc12065381e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369648/normal_600a2369803e8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366024/normal_5fde326bdb3e2.pdfIn PDF document text
    • http://italylife.pro/2160258582680udf.pdfIn PDF document text
    • https://gunagejosiva.weebly.com/uploads/1/3/0/7/130738835/f57c13ee079a1.pdfIn PDF document text
    • https://xasukibumit.weebly.com/uploads/1/3/4/7/134749231/lapodimujodiro.pdfIn PDF document text
    • https://voxipomawo.weebly.com/uploads/1/3/1/3/131379395/piguzirafajugel-zeronilal.pdfIn PDF document text
    • https://jetezilim.weebly.com/uploads/1/3/0/7/130775858/nelojolaliloj_fuguzisuto.pdfIn PDF document text
    • http://whitetwo.space/10020810241q6h9y.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449965/normal_5fcc3e09e4e05.pdfIn PDF document text
    • https://ropidofizo.weebly.com/uploads/1/3/0/7/130738616/747a8135.pdfIn PDF document text
    • http://opsnatur.fun/kalman_filter_matlab_example5f4cp.pdfIn PDF document text
    • http://acgmgroup.ru/castle_crashers_pets_guidevaigk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/wumodukubaru/4526056135.pdfIn PDF document text
    • https://s3.amazonaws.com/goneduzum/95038989341.pdfIn PDF document text
    • https://s3.amazonaws.com/nunakixuma/7216572436.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagobomap/92501172273.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_off0000c33c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC33C 5584 bytes
SHA-256: 8c3bb07d61546af4717150f1825f8fbb1f17b10df335a26a1dd0c69e9ce5478d
font_01_sfnt_off0000d60b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD60B 9916 bytes
SHA-256: 3a85fa6dbf2004dd80b0b60d1c597a7135d956a74b85ab896a3e063e3e7954df
font_02_sfnt_off0000f7ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7EC 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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