Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce50ee740286e6cb…

MALICIOUS

PDF

73.5 KB Created: 2021-02-27 16:25:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: ab2d75dd61c8ff12fbdecabe1eda3343 SHA-1: a1c9f5b609db14d753f384d64be3fd0af4832d72 SHA-256: ce50ee740286e6cbc2afd7bd9407cba1700d1579a55332f449571687d9345767
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://yafferge.ru/wix?keyword=after+ever+happy+pdf+free+download In PDF document text
    • http://nasufulorejuwe.mywebcommunity.org/juxajetarosirogavet.pdfIn PDF document text
    • http://patewukezevo.iblogger.org/gb_whatsapp_beta_free.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420589/normal_600bd4a0e228d.pdfIn PDF document text
    • http://vumonivaxozutod.mypressonline.com/cuisinart_14_cup_food_processor_sale.pdfIn PDF document text
    • http://xojuxelase.medianewsonline.com/modal_verb_conversation_listening.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421778/normal_5ff939beb3728.pdfIn PDF document text
    • http://wigevopane.iblogger.org/the_little_drummer_boy_sheet_music_free.pdfIn PDF document text
    • http://fisujerekuvij.getenjoyment.net/what_does_spectrum_code_s0900_mean.pdfIn PDF document text
    • http://doguzunagenuxo.22web.org/62477801938.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bususetut.epizy.com/lafumebeb.pdfIn PDF document text
    • http://nuvijexuwafado.rf.gd/state_of_illinois_apostille_form.pdfIn PDF document text
    • http://zarevarepi.epizy.com/ladies_who_lunch_company_sheet_music.pdfIn PDF document text
    • http://sowukosififu.rf.gd/renipup.pdfIn PDF document text
    • http://jofesosozofoso.epizy.com/samusarakunivinujivenuj.pdfIn PDF document text
    • http://widepidaba.atwebpages.com/midsummer_nights_dream_short_script.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_off0000e44b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE44B 5196 bytes
SHA-256: 3c8ac4fe18c688538e23300da2598a8d3d879ad396163ec554d8b6e25878d811
font_01_sfnt_off0000f610.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF610 10232 bytes
SHA-256: e9e84b0fcbb8f6ec1e10905b6dfcad344e23f15722ef7b6d49658dfd020f05bb