Malicious PDF — malware analysis report

Static analysis result for SHA-256 a176e9b1d7ee135f…

MALICIOUS

PDF

83.5 KB Created: 2021-01-28 06:29:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 09bb319b18892ce17664326b3d967853 SHA-1: 9dad161b7c5c8f977a393e1f10dd1dcd43dbfbf8 SHA-256: a176e9b1d7ee135fbd6964aac61efb0af75eb29a374a3bdb7f3b7c022a79a50e
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/aws?utm_term=theri+audio+songs++mp4 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4485448/normal_5fd0b8de4c9d8.pdfIn PDF document text
    • https://cdn.sqhk.co/fejisedetu/3bZSVPB/dr_david_jones_cardiologist.pdfIn PDF document text
    • https://cdn.sqhk.co/zikegasenar/fvhelhd/free_online_slots_for_real_money_no_deposit.pdfIn PDF document text
    • http://ruwaxidalemib.iblogger.org/namavimofet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367947/normal_5fdc076a7d30f.pdfIn PDF document text
    • https://cdn.sqhk.co/tedatekalo/gdsjdif/vpn_private_pro_apk_mod.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478131/normal_5fcbee62e5b71.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385217/normal_5fd67a24eba91.pdfIn PDF document text
    • https://cdn.sqhk.co/benibavagoge/hihdbDf/21696751074.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416496/normal_5fee29a9df1a7.pdfIn PDF document text
    • http:///\/www.paatuvarigal.com\/2016\/03\/jithu-jilladi-lyrics-from-their.html,video_url:,zoomit:0,premium_content:0,is_premium:0,preview_url:null,rest_lev:0,rest_msg_free:null,rest_msg_paid:null,_e:0,aes_enabled:1,aet:1,release_date:AprIn PDF document text
    • http:///\/www.lyricsinbox.com\/5285\/dub-their-step-lyrics-their,video_url:,zoomit:0,premium_content:0,is_premium:0,preview_url:null,rest_lev:0,rest_msg_free:null,rest_msg_paid:null,_e:0,aes_enabled:1,aet:1,release_date:AprIn PDF document text
    • http:///\/www.paatuvarigal.com\/2016\/03\/eena-meena-teeka-lyrics-from-their.html,video_url:,zoomit:0,premium_content:0,is_premium:0,preview_url:null,rest_lev:0,rest_msg_free:null,rest_msg_paid:null,_e:0,aes_enabled:1,aet:1,release_date:AprIn PDF document text
    • http:///\/www.lyricsol.com\/raangu-lyrics-their\/,video_url:,zoomit:0,premium_content:0,is_premium:0,preview_url:null,rest_lev:0,rest_msg_free:null,rest_msg_paid:null,_e:0,aes_enabled:1,aet:1,release_date:AprIn PDF document text
    • http:///\/www.lyricsol.com\/thaimai-lyrics-their\/,video_url:,zoomit:0,premium_content:0,is_premium:0,preview_url:null,rest_lev:0,rest_msg_free:null,rest_msg_paid:null,_e:0,aes_enabled:1,aet:1,release_date:AprIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sinadi/84258340142.pdfIn PDF document text
    • http://folijurojavagig.epizy.com/36711193244.pdfIn PDF document text
    • http://munoxefarofow.rf.gd/31228110193.pdfIn PDF document text
    • http://fukefuxatolu.epizy.com/75278454804.pdfIn PDF document text
    • http://toxuwer.epizy.com/42979800909.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_off0001096d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1096D 5376 bytes
SHA-256: aab5685a7ae2bf56833a5e3448c69e47d24a22da3a507a207b3c336a7e13c09a
font_01_sfnt_off00011b8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B8F 11100 bytes
SHA-256: 33ad5719a5f8376fc26a6d13aaafa0d8f52405f1fe8205e0c2def88d95542e2c

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