Malicious PDF — malware analysis report

Static analysis result for SHA-256 7196ec486efcec74…

MALICIOUS

PDF

80.4 KB Created: 2021-04-04 03:50:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ab6029abd32933b94afbe64272ee4535 SHA-1: 469537417c6a984892c6fd90bc8e8b80da750b40 SHA-256: 7196ec486efcec74b715c804c49cfd0b798a6659fb96ddef234d65ba43de4dca
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, identified as a link farm, suggesting a malicious intent to redirect users. The ML classifier and ClamAV detection strongly indicate maliciousness, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URIs point towards an attempt to leverage external resources for malicious purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://ponafet.ru/strik?utm_term=how+much+is+a+2008+honda+civic+hybrid+worth
    • https://cdn.sqhk.co/semegopo/9hf8Cjc/sixavofanofuxojapaxol.pdf
    • http://nowefewafugaki.iblogger.org/fuzekefejorax.pdf
    • https://levavago.weebly.com/uploads/1/3/5/3/135343263/3339405.pdf
    • https://cdn.sqhk.co/jubawiwa/eiehegd/31706839721.pdf
    • https://cdn.sqhk.co/kagelemovo/fyIiiha/rewards_program_bank_definition.pdf
    • https://cdn.sqhk.co/roxirali/4r4QJha/anglo_assamese_dictionary_software_free.pdf
    • https://cdn.sqhk.co/baruduwege/jf5Vpij/disaster_management_encyclopedia.pdf
    • http://vixojejuzata.iblogger.org/tizedabuse.pdf
    • https://namavikevak.weebly.com/uploads/1/3/2/7/132740743/6060680.pdf
    • https://lalevajapogos.weebly.com/uploads/1/3/0/8/130874146/bf41469336c58.pdf
    • https://static.s123-cdn-static.com/uploads/4426260/normal_5fc8ba877fb33.pdf
    • https://cdn.sqhk.co/baxoladipezu/iLhjhaR/videocon_dth_recharge_app_download.pdf
    • https://lakerevuko.weebly.com/uploads/1/3/4/6/134654656/9c3c22bd87339.pdf
    • https://cdn.sqhk.co/kigaratak/fDthapd/launch_phase_meaning_in_english.pdf
    • http://bitopikagigev.iblogger.org/electronics_projects_files_download.pdf
    • https://cdn-cms.f-static.net/uploads/4383678/normal_600eeeca38225.pdf
    • https://cdn-cms.f-static.net/uploads/4452845/normal_60107f1fa6783.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fijaxij.rf.gd/absorptive_lenses.pdf
    • http://gametusepezuka.rf.gd/dofigewosowajeditefabo.pdf
    • http://fefomuk.epizy.com/aarti_shastri_ke_bhajan_video.pdf
    • http://torobedi.epizy.com/traductor_google_ingles_espaol_con_voz_gratis.pdf
    • http://nirepuxakidogu.rf.gd/99661513063.pdf
    • http://wetiruri.epizy.com/freezer_not_cold_enough_for_ice_cream.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fac7.bin
14ee6f4aa7369e4806d33c7ae80f6d267afa98a7353da703e470e5e4605bc249		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFAC7 5972 bytes
font_01_sfnt_off00010f01.bin
b20a206e47a9cd88d28e95765b2b434c46f118f8a177a942f7687c33fa72ee27		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10F01 10920 bytes

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