Malicious PDF — malware analysis report

Static analysis result for SHA-256 328cae79a1933153…

MALICIOUS

PDF

75.5 KB Created: 2021-02-22 12:11:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 1feccd79ab6383fe9f48c063afc3036e SHA-1: d4834ad695956fba5d5ec9ac5bf492b97f817769 SHA-256: 328cae79a193315373b66298d17598713380d00534d55615af9d071c31bfc3c3
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wix?keyword=chemical+and+physical+change+worksheet In PDF document text
    • https://vefoxetewezelir.weebly.com/uploads/1/3/1/4/131483279/pagezibu-gaxuna.pdfIn PDF document text
    • https://banatili.weebly.com/uploads/1/3/5/3/135314160/fifod.pdfIn PDF document text
    • http://lexusesadedebaz.22web.org/vigezokifitokez.pdfIn PDF document text
    • https://cdn.sqhk.co/murerezusa/Agdjj2M/simple_business_plan_sample_for_restaurant.pdfIn PDF document text
    • http://zitekimuzefovar.iblogger.org/how_stock_market_works_in_india.pdfIn PDF document text
    • https://niniteju.weebly.com/uploads/1/3/0/8/130814631/zoxevivituvera-tunavikutuj-muwexopepo-murasag.pdfIn PDF document text
    • https://cdn.sqhk.co/posojuvapono/el2gcqh/sedemanuvikilaxodijutogiv.pdfIn PDF document text
    • https://dimutaribosisup.weebly.com/uploads/1/3/4/4/134444719/zunedorek-gezigego.pdfIn PDF document text
    • https://cdn.sqhk.co/gegojagakexu/icfjsig/jigukirobigir.pdfIn PDF document text
    • http://dijawobal.iblogger.org/kulokofudejunuse.pdfIn PDF document text
    • http://lollipopa.online/android_notification_automatic_clear69kj4.pdfIn PDF document text
    • https://rakevuxex.weebly.com/uploads/1/3/4/0/134040666/4597465.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://degixugepu.rf.gd/is_there_a_cinderella_2.pdfIn PDF document text
    • http://rigutogivopum.epizy.com/division_of_polynomials_exercises_with_answers.pdfIn PDF document text
    • http://tebaxisabajix.rf.gd/pathfinder_2e_character_sheet_pack.pdfIn PDF document text
    • http://bemerolafun.epizy.com/financial_reporting_quality_and_idiosyncratic_return_volatility.pdfIn PDF document text
    • http://bitugoxopezuwu.rf.gd/38883905577.pdfIn PDF document text
    • http://fenibume.epizy.com/echo_dot_2nd_generation_price.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_off0000ea29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA29 5652 bytes
SHA-256: 197357ad2832f1e3d81bff04c9fe1f91896bacc1200b6c670a9fc7b91e92124b
font_01_sfnt_off0000fd49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD49 10396 bytes
SHA-256: 0d4445108d195d54defcbad480e771dd7ebc8f47e21394ac176adf68989d7cc7