Malicious PDF — malware analysis report

Static analysis result for SHA-256 9992f16f97a77fc3…

MALICIOUS

PDF

67.0 KB Created: 2021-02-16 11:48:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: a12a863470ec175b1d2cf61118e0ad51 SHA-1: f49b8e10740001d9cd9a80dc2bb8e00b9f65bb91 SHA-256: 9992f16f97a77fc3cfa2047c584248b9156409a3d139ad5f6f3d9bb95e7695fa
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://maypoin.ru/wix?keyword=dragon+city+apk+download+uptodown PDF link annotation
    • http://kanugodojavuwiv.22web.org/application_format.pdfIn PDF document text
    • http://clubstore.pro/primedic_defib_service_manual5yrw1.pdfIn PDF document text
    • https://jagunafine.weebly.com/uploads/1/3/4/3/134363358/xesidofupamijorazu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417809/normal_5ff94e5db7cb7.pdfIn PDF document text
    • http://curvepreloved.com/gmat_quantitative_questions_and_answerswpkms.pdfIn PDF document text
    • http://wajagokigipato.iblogger.org/28459898234.pdfIn PDF document text
    • https://vebavorosufate.weebly.com/uploads/1/3/4/7/134742301/mepukifebexa.pdfIn PDF document text
    • http://rp-youtube.fun/239578496928ir2h.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402956/normal_5fed465589a38.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://furugavasipif.epizy.com/99291717379.pdfIn PDF document text
    • http://zadagudigewe.rf.gd/lincolnshire_police_traffic_reports.pdfIn PDF document text
    • http://vizepojuduw.rf.gd/65482043537.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_off0000ca56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA56 5320 bytes
SHA-256: 22ed1adc4f1499fa5c765bdeafde28ac90ad984f3711f5f258388cd2d61f2628
font_01_sfnt_off0000dca1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCA1 10148 bytes
SHA-256: ef3dc282f8c297b0db3256c9a4f8a0e77705c78a4c11cbe01b0069bac8ed1b9e