Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d8148e9b0f490c1…

MALICIOUS

PDF

63.8 KB Created: 2021-02-19 07:30:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 2a7cd8cda35f80bd5feeb8689cebe075 SHA-1: 7cfd83c0863a15556bbd209739e0ac9af13f91c7 SHA-256: 1d8148e9b0f490c1f2baf67998de308507e062512c264b2b53aeadbf90b9c3e4
126 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
  • 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.
  • 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://leonvi.ru/wix?keyword=limits+of+trig+functions+worksheet PDF link annotation
    • https://cdn.sqhk.co/ditetona/hjhjWii/little_alchemy_2_game_download.pdfIn PDF document text
    • http://help-feedback-amzn8.xyz/37813970958xudlq.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472198/normal_602a4032f19f5.pdfIn PDF document text
    • https://cdn.sqhk.co/konidadelan/jcheIXz/rukabijituluxed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414701/normal_602e0f1b82182.pdfIn PDF document text
    • https://fonekukiko.weebly.com/uploads/1/3/5/3/135393218/6cab55e4.pdfIn PDF document text
    • http://hustlinmoney.com/nogafeti70b8f.pdfIn PDF document text
    • http://weraka.online/applied_calculus_7e_answers14jxc.pdfIn PDF document text
    • http://iciapp.xyz/92913569797yfcai.pdfIn PDF document text
    • https://cdn.sqhk.co/numavagoko/rWtC6jd/best_line_rider_track_download.pdfIn PDF document text
    • https://cdn.sqhk.co/jeporikate/jEgivjb/highway_395_road_conditions.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407306/normal_5fdef53926e48.pdfIn PDF document text
    • http://leafester.online/ball_bounce_sport_inc_ashland_ohmatjd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/winumigutam/ssc_chsl_result_marksheet_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzaganog/operational_qualification_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/genedonapubefe/excel_inventory_list_template_software.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_off0000bfcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFCC 5148 bytes
SHA-256: 28773a4448fa1f7a1f73e4fda4476568b799c9e87be2968c12c31a57bfbe0b32
font_01_sfnt_off0000d146.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD146 9672 bytes
SHA-256: b8504090ad6c4ba02bad647679432bc359aa4635949524f8a42394f06301d283