Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e258ee650fb5bf0…

MALICIOUS

PDF

71.5 KB Created: 2021-03-02 01:40:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 8565d81bb62f458adf53ced3ac52449b SHA-1: 79e2a32099eceee22f940d616fe57b1f7ae6e615 SHA-256: 7e258ee650fb5bf04b05d21465c4065f74f52b77ba85445aefd80fcf08cbc73b
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://jottigo.ru/wix?keyword=portal+knights+mod+apk PDF link annotation
    • https://luvoseguz.weebly.com/uploads/1/3/4/6/134665560/7736981.pdfIn PDF document text
    • http://trelon.fun/40m_loop_antenna_calculator4vbg9.pdfIn PDF document text
    • https://wiwupaluw.weebly.com/uploads/1/3/1/6/131606778/donebo_kerilapito_kiresunosiku.pdfIn PDF document text
    • https://renudufodajofi.weebly.com/uploads/1/3/4/8/134884992/1d869faea04.pdfIn PDF document text
    • http://formverifiedbadge.com/lawipijamezegzgwp.pdfIn PDF document text
    • http://rexevivejegox.scienceontheweb.net/48266687609.pdfIn PDF document text
    • https://lanuwoga.weebly.com/uploads/1/3/1/6/131637333/kekasagik_joxuzasosovorip.pdfIn PDF document text
    • http://hookup681.site/c1_listening_test_with_answerspm3l1.pdfIn PDF document text
    • http://xuwuvewisin.mypressonline.com/topupemudifovetuzarig.pdfIn PDF document text
    • https://mogimefiledewe.weebly.com/uploads/1/3/1/8/131857364/7616ae2b1.pdfIn PDF document text
    • https://pexajutamog.weebly.com/uploads/1/3/4/7/134759810/xovudavopisalis.pdfIn PDF document text
    • http://fixmarker.fun/how_to_use_black_and_decker_hedge_trimmerj1lws.pdfIn PDF document text
    • https://lubozukutiximik.weebly.com/uploads/1/3/4/4/134472848/nuwiwujet-gemonisin-bezet-xizosekul.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/fekazudabo/barsaat_film_song_1995.pdfIn PDF document text
    • https://s3.amazonaws.com/ganubifirigevi/duketovemigoxerinitimer.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_off0000da7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA7E 5440 bytes
SHA-256: 7f9f73e473e8bd47705a8cf08cf40581a9f56c26c5f6e1e9e065c5ac4a6ca306
font_01_sfnt_off0000ecca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECCA 10620 bytes
SHA-256: c858ab42278e1b04a4cdb314541d5fc9f1ffe5fa0fa92c623ea7648e067b8354