Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f0373dacdee8e15…

MALICIOUS

PDF

64.5 KB Created: 2021-02-24 05:50:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 4d89da68d2a4b3262f5ced82b3dde74d SHA-1: ac04aed9666e2df05ffd5d0661e7b3ce53d02ebe SHA-256: 8f0373dacdee8e15ebedb5d7557a32fb392c157e6f21dc11aa8be60f971900f9
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://leonvi.ru/wix?keyword=perimeter+find+the+missing+side+length+worksheet+pdf PDF link annotation
    • https://cdn.sqhk.co/gomalajipo/bGv7ibg/toe_nail_designs.pdfIn PDF document text
    • https://cdn.sqhk.co/xaripisi/7uFKjeY/tepoweme.pdfIn PDF document text
    • https://cdn.sqhk.co/zovigobut/2gnsihw/free_robux_loto_2020_ivm_games.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481397/normal_601b8debc0b0d.pdfIn PDF document text
    • https://visofebofoxofub.weebly.com/uploads/1/3/0/8/130814652/pogivib-nigikujijefixij.pdfIn PDF document text
    • https://jateredadiwez.weebly.com/uploads/1/3/1/6/131606262/242468.pdfIn PDF document text
    • https://fetevemukimagon.weebly.com/uploads/1/3/4/8/134896640/biwowaxupeje_dojizaruve_wijofexalizofuv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459329/normal_5ffa56f5e5bb1.pdfIn PDF document text
    • https://fugikoji.weebly.com/uploads/1/3/4/6/134611078/vuferepikegubi_damada_pokojilavusulo.pdfIn PDF document text
    • https://samabuwe.weebly.com/uploads/1/3/0/7/130739499/kozojam-tinag-mutakokuwuv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gevalej.epizy.com/best_telugu_movies_2019.pdfIn PDF document text
    • http://sewepara.epizy.com/rumugopesez.pdfIn PDF document text
    • https://s3.amazonaws.com/mixanaz/infomercial_template_photoshop.pdfIn PDF document text
    • http://zigazus.rf.gd/85595926086.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_off0000c107.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC107 5400 bytes
SHA-256: e7f15c43ae5e6f3c5f55fc7a70d69e436c2185bcb9a89c9c9a9ad356f1de2060
font_01_sfnt_off0000d355.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD355 9904 bytes
SHA-256: 24bac03cad9a9b658b361f60362608cce9453735477abb1df47bce94da5f3bb3