Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e6e37bbd341a68f…

MALICIOUS

PDF

72.6 KB Created: 2021-03-05 20:21:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 7ae857d4d1cf5c161236f0ca5bdb34a0 SHA-1: 47823df206ef7e33c835fac8aa6010df26686088 SHA-256: 8e6e37bbd341a68f738c40b9716296c0a0f3e02f9ecc329a8e655b4dde1e3f7d
186 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 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://leonvi.ru/wix?keyword=mathematical+time+table+chart PDF link annotation
    • https://cdn.sqhk.co/raxasumo/QAgekha/bad_banks_netflix_cast.pdfIn PDF document text
    • https://cdn.sqhk.co/wujakegu/6RgcLja/hackers_falls_weather.pdfIn PDF document text
    • https://jufapagemegugux.weebly.com/uploads/1/3/4/8/134860181/7964761.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427504/normal_603be1c7a4515.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411481/normal_5fc5cda9d641f.pdfIn PDF document text
    • https://cdn.sqhk.co/vurifozi/jejhjhe/talking_tom_gold_run_gameplay_online.pdfIn PDF document text
    • https://cdn.sqhk.co/sofawaju/GCiehht/61238736660.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374189/normal_5fe3b3352f98a.pdfIn PDF document text
    • https://takewinedol.weebly.com/uploads/1/3/4/7/134768260/f9ac758d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413118/normal_601e040b16cb8.pdfIn PDF document text
    • https://cdn.sqhk.co/wufaluvete/G0Qsfhg/43868976287.pdfIn PDF document text
    • http://rajajime.mypressonline.com/32109748667.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481540/normal_5fe002d4448ee.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vefajed.rf.gd/62418545244.pdfIn PDF document text
    • http://novogizeboje.myartsonline.com/org_chart_template_powerpoint_free.pdfIn PDF document text
    • http://gizimup.epizy.com/easd_guidelines_gestational_diabetes.pdfIn PDF document text
    • http://pisonepegosa.myartsonline.com/6523768705.pdfIn PDF document text
    • http://jikasetanixibef.epizy.com/propiedades_fisicas_y_mecanicas_de_los_materiales_compuestos.pdfIn PDF document text
    • http://xuduzunubedi.rf.gd/affichage_dynamique_android_gratuit.pdfIn PDF document text
    • http://jowuwivipi.rf.gd/chikku_bukku_railu_song_masstamilan.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_off0000e1a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1A1 5004 bytes
SHA-256: d0fde095c3bb0e777650ea65842e78fafc0c3b6db0d4815ac7bc22af8ed52d5a
font_01_sfnt_off0000f286.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF286 10204 bytes
SHA-256: e6e8dc2f2091fc5a3d78c9a863c89f0aae0f018004e9c0191c167a305ee867f1

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