Malicious PDF — malware analysis report

Static analysis result for SHA-256 707c31b14f0eb8cf…

MALICIOUS

PDF

67.4 KB Created: 2021-02-18 21:25:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 099d99c1111cd94ebc716951cd9f58a3 SHA-1: b55a66efdce54b916eb4ba9dd1749628066577af SHA-256: 707c31b14f0eb8cf570cd25788bf207884fc8341ed340936f87ac93d5cb6d366
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://vinawulisakuj.weebly.com/uploads/1/3/2/7/132712505/71d4ba8f27a.pdf.
  • 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://baarspo.ru/wix?keyword=is+h2so4+ionic+or+covalent+compound PDF link annotation
    • http://4gusevshop.website/descargar_libro_don_seductordz806.pdfIn PDF document text
    • http://effektzhizni.ru/accounting_for_managers_exam_questions_and_answersh632p.pdfIn PDF document text
    • http://santecmb-sarl.com/dezerunigogoralososasinekpkg1d.pdfIn PDF document text
    • https://vinawulisakuj.weebly.com/uploads/1/3/2/7/132712505/71d4ba8f27a.pdfIn PDF document text
    • http://prizinsta365.site/eenadu_epaper_today_telugu_downloadyq1w0.pdfIn PDF document text
    • https://cdn.sqhk.co/vufisolepu/ijegh0F/metal_slug_anthology_wii_u.pdfIn PDF document text
    • http://vkysnaya-eda.site/kipebepuzejiselusedecjwnp.pdfIn PDF document text
    • https://vujivizu.weebly.com/uploads/1/3/5/3/135305207/4325085.pdfIn PDF document text
    • http://efarbok.xyz/prime_factorization_worksheetfd0o8.pdfIn PDF document text
    • https://cdn.sqhk.co/nokotadi/gtje3cR/zing_zang_bloody_mary_mix_nutrition.pdfIn PDF document text
    • http://arm-watch1.club/tepijisenexokubutoxoruf3cwp9.pdfIn PDF document text
    • https://rujumimipadud.weebly.com/uploads/1/3/0/8/130874091/fetozujewa-gowinipageze-goruraj-xetajekimew.pdfIn PDF document text
    • https://pupalizote.weebly.com/uploads/1/3/4/7/134716330/vuzebagegis.pdfIn PDF document text
    • http://aycotoro5.xyz/nobilod5boas.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/gewisetug/7578146503.pdfIn PDF document text
    • https://s3.amazonaws.com/jolunenafobuw/79283001857.pdfIn PDF document text
    • https://s3.amazonaws.com/selivuvumepaveb/hpsssb_drawing_master_answer_key_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/zamemigojat/12497136070.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bebc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBEBC 5412 bytes
SHA-256: 4382591c4d58a6fc78cedc307c30c1903aeaba7bc883a4acf881839beab01c46
font_01_sfnt_off0000d0f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0F1 9760 bytes
SHA-256: 42b2bf2daf89e15e239db9d9c2654b73687f9401e9261679f4824c7b2ac65add
font_02_sfnt_off0000f243.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF243 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333