Malicious PDF — malware analysis report

Static analysis result for SHA-256 82596e7285808e83…

MALICIOUS

PDF

66.1 KB Created: 2021-02-19 20:46:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 43ac533c51ea7e2f5434f351537bf29a SHA-1: 98272bd3ea9d256ac068f62bfb238dc25afd7bfb SHA-256: 82596e7285808e83a178c875b30a1c36b702f779ad9f81d1641a771aa0c7e6af
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=css+the+definitive+guide+visual+presentation+for+the+web+download+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4486374/normal_600d8b545d638.pdfIn PDF document text
    • https://bimefitovaj.weebly.com/uploads/1/3/1/4/131437299/vuliw_vevozaze_wibixawajez.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474450/normal_5fefed625423a.pdfIn PDF document text
    • https://vumetubav.weebly.com/uploads/1/3/0/7/130776444/lamepasono_bonafidegojil_rudugipupijiwuv_jeluxafeladomo.pdfIn PDF document text
    • https://rejobasagiletez.weebly.com/uploads/1/3/4/6/134642313/6ef630633.pdfIn PDF document text
    • https://kixixowagixu.weebly.com/uploads/1/3/2/7/132710794/mabegizib-merin.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427076/normal_6003a39cd114c.pdfIn PDF document text
    • https://mixasokuxorizu.weebly.com/uploads/1/3/4/7/134742222/b5dba30443415.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/xeropizuwe/vadanutodibifopovuwufuv.pdfIn PDF document text
    • http://mewazeni.epizy.com/analysing_architecture_simon_unwin_free.pdfIn PDF document text
    • https://s3.amazonaws.com/kiguteperilodu/21407112847.pdfIn PDF document text
    • http://kolenexe.epizy.com/37452463770.pdfIn PDF document text
    • http://zekibinixosa.epizy.com/navigators_of_dune.pdfIn PDF document text
    • http://lavofedelozus.rf.gd/20752409394.pdfIn PDF document text
    • http://wuxodevidupibe.epizy.com/butterknife_android_import.pdfIn PDF document text
    • http://suvowafavij.epizy.com/antisocial_2013_movie.pdfIn PDF document text
    • http://lexireto.epizy.com/57301178234.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_off0000c572.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC572 5500 bytes
SHA-256: b5ceb13ae4089aa4a6e6fa5901c87dc7b64c80d1abcc84364c7b34a775b63778
font_01_sfnt_off0000d831.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD831 9968 bytes
SHA-256: 0f9019d3561cb226228dcf278e6e437ac927c36191442261b10cfa1d193719c1