Malicious PDF — malware analysis report

Static analysis result for SHA-256 50b899e909bafdca…

MALICIOUS

PDF

69.1 KB Created: 2021-03-02 07:11:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: adf9212d4d6822804871e4ec366645c0 SHA-1: a2212ca69f625a305f7ef16b0adf4ebe1849ab9c SHA-256: 50b899e909bafdcae2abf95eb3d8dd3af7c02038013367ba3ab7d4f1599326ca
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://seumenha.ru/award?keyword=10-3+skills+practice+circles+answers+algebra+2 PDF link annotation
    • https://viregexifojimo.weebly.com/uploads/1/3/4/7/134707817/wewaxezivunom.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475215/normal_5fd114a32436f.pdfIn PDF document text
    • https://kuxiwidozerapi.weebly.com/uploads/1/3/4/7/134728536/a5e6010eddf27.pdfIn PDF document text
    • https://cdn.sqhk.co/zibomevuguli/C3gicge/zabaxupi.pdfIn PDF document text
    • https://cdn.sqhk.co/loxosefivipo/9MDHECC/tikemetepebogasekowanur.pdfIn PDF document text
    • http://jilet2.club/java_core_book12pwz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459324/normal_6015eec72bc14.pdfIn PDF document text
    • http://mattelipsticks.site/free_bootstrap_templates_with_login_formrtjaz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416144/normal_5fe3f37bb6eed.pdfIn PDF document text
    • http://sabovibin.medianewsonline.com/vuker.pdfIn PDF document text
    • http://midarujiwuvi.mygamesonline.org/rutapinetegakesefizasi.pdfIn PDF document text
    • https://rejileju.weebly.com/uploads/1/3/4/3/134335231/vukova-pixobomadele-waruwun.pdfIn PDF document text
    • https://jevokave.weebly.com/uploads/1/3/4/2/134266272/16136b66a3d.pdfIn PDF document text
    • https://fomezesas.weebly.com/uploads/1/3/4/3/134343882/lojurabowum.pdfIn PDF document text
    • http://fumexijana.getenjoyment.net/80475811226.pdfIn PDF document text
    • http://webmastervlad.ru/repulsed_synonym_adjective2dun4.pdfIn PDF document text
    • http://duplicwcnj.space/bms_apk_4._2kcwnc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492259/normal_5ff377802949b.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
    • http://pokazirajig.rf.gd/eromski_ludzie_bezdomni.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_off0000c281.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC281 5500 bytes
SHA-256: d0cab4aa492e41a991bee102ea722512fe34a7ddeae79b3c7251b5d78c02c5d8
font_01_sfnt_off0000d550.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD550 10316 bytes
SHA-256: 1ac0b20f3f0e865622341b4003a064c67badd3441dc71174f4806a8a3bb4339b
font_02_sfnt_off0000f888.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF888 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333