Malicious PDF — malware analysis report

Static analysis result for SHA-256 9062b7057ecf1e9e…

MALICIOUS

PDF

78.3 KB Created: 2021-02-26 02:25:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 49e8257b7d43dab4346b71f11919fbbf SHA-1: d3aac8d3509d3517299f1f53782bde11e7927eee SHA-256: 9062b7057ecf1e9ed60252eb392281d9b5bd331213255de662d0f4cf968d6153
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs that redirect to external sites, identified as malicious redirectors and link farms on disposable hosting. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. No scripts were extracted, but the embedded URLs are the primary indicators of compromise.

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://yafferge.ru/strik?utm_term=do+humidifiers+work+without+filters In PDF document text
    • https://winulovovitazu.weebly.com/uploads/1/3/0/7/130740324/favejomazij-wilez-tiwozu-wovom.pdfIn PDF document text
    • http://smotrikino.fun/will_there_be_more_miss_peregrine_movieso6my8.pdfIn PDF document text
    • http://tumbaa.space/davis_drug_guide_online_discount_codelal50.pdfIn PDF document text
    • https://tisalupiruj.weebly.com/uploads/1/3/4/0/134018152/5410f0.pdfIn PDF document text
    • http://zobotalemogi.sportsontheweb.net/muvexi.pdfIn PDF document text
    • http://wordsidepost.top/basic_accounting_journal_entries_practicefa9ws.pdfIn PDF document text
    • https://cdn.sqhk.co/nisosawero/Jhg36je/sitogeziniwokalizufa.pdfIn PDF document text
    • https://wimiwimevodozaz.weebly.com/uploads/1/3/0/8/130874111/gezab-wepefefumilet-pezadadov.pdfIn PDF document text
    • https://cdn.sqhk.co/mepowokugo/hhridPl/30523262074.pdfIn PDF document text
    • http://adminhalil.com/27637784909jhiu.pdfIn PDF document text
    • https://faxipanonuk.weebly.com/uploads/1/3/4/3/134352952/gukutoz-sunuzudu-voruduk.pdfIn PDF document text
    • https://cdn.sqhk.co/tikisudolo/eibMaMU/chocolate_pudding_recipes_easy.pdfIn PDF document text
    • http://wacc-cat.org/us_polo_assn_watch_manuali2gb3.pdfIn PDF document text
    • https://cdn.sqhk.co/vabalogu/gg6Igd4/sniper_ghost_warrior_3_xbox_one_x.pdfIn PDF document text
    • http://itabody.space/rekifiremafirokifopjy8o.pdfIn PDF document text
    • http://newipufisatag.scienceontheweb.net/how_to_charge_your_jlab_wireless_earbuds.pdfIn PDF document text
    • http://vulufinagi.mypressonline.com/how_to_auto_program_a_black_and_decker_coffee_maker.pdfIn PDF document text
    • https://cdn.sqhk.co/zerurukoraju/o87iawO/47796346905.pdfIn PDF document text
    • http://helplnstagram-confirm.com/what_organizations_will_take_furniture_donations8zr8y.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000f62c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF62C 5092 bytes
SHA-256: 4938c790b1327a0854aebf0b01af08d5bd96460962e145715485d530f42c8d6c
font_01_sfnt_off0001076c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1076C 10600 bytes
SHA-256: cb4e469ee7bb6acf800e694b1d291b67d251fa5f2c85bec70a9873bbe0e71a66

Open this report in the interactive analyzer, or submit your own file for analysis.