Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6727663e5108b7a…

MALICIOUS

PDF

79.4 KB Created: 2021-03-10 21:23:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 7511e52a885d41692283a6fa9e9395be SHA-1: 80649a9bd67019c27ce84e340c6140bfc3d05115 SHA-256: d6727663e5108b7ac75082493923646bf4cf81dd0fa0b15b99130d27f1b07eb9
154 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, indicating a phishing or malware distribution attempt. The embedded URL, 'https://yafferge.ru/strik?utm_term=does+nissan+have+transmission+problems', is the primary indicator of malicious intent. While no scripts were explicitly extracted, the PDF structure and the presence of malicious links suggest it's designed to lead the user to a harmful site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9950

Heuristics 4

  • 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.
  • 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=does+nissan+have+transmission+problems In PDF document text
    • https://cdn-cms.f-static.net/uploads/4383795/normal_60395f8a3f484.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411252/normal_602c074d94038.pdfIn PDF document text
    • https://cdn.sqhk.co/laxegipo/sSgjo4t/vevivajirosega.pdfIn PDF document text
    • http://gidujoluj.mypressonline.com/fadufifinusige.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374379/normal_6036b0bf9fd7d.pdfIn PDF document text
    • http://lezeninimi.medianewsonline.com/pemiraw.pdfIn PDF document text
    • https://cdn.sqhk.co/nebafori/hjzibvW/perfect_slice_cutting_tool.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461204/normal_60184caab5cdd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452148/normal_6017c6144f5f5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/nakuzafol/set_top_box_android_aliexpress.pdfIn PDF document text
    • https://s3.amazonaws.com/towutoginadivu/la_amortajada_audiolibro_resumen.pdfIn PDF document text
    • https://s3.amazonaws.com/vajefam/microsoft_office_word_graph_paper_template.pdfIn PDF document text
    • https://s3.amazonaws.com/tezofuretejom/how_to_load_black_and_decker_strimmer_line.pdfIn PDF document text
    • https://s3.amazonaws.com/navoburarovada/gozeparatupifofi.pdfIn PDF document text
    • https://s3.amazonaws.com/lawakux/2994516906.pdfIn PDF document text
    • https://s3.amazonaws.com/muvazi/19200308194.pdfIn PDF document text
    • https://s3.amazonaws.com/zopenave/english_test_papers_for_grade_5.pdfIn PDF document text
    • https://s3.amazonaws.com/mejifavo/database_administrator_interview_questions.pdfIn PDF document text
    • https://s3.amazonaws.com/boxalewijim/70941936359.pdfIn PDF document text
    • http://rixuroruwe.myartsonline.com/rawinafurewujunololu.pdfIn PDF document text
    • http://patudesaruvob.atwebpages.com/por_qu_o_porque_ejemplos.pdfIn PDF document text
    • https://s3.amazonaws.com/dumupa/fobebelopafojodeji.pdfIn PDF document text
    • https://s3.amazonaws.com/zabevog/entry_level_mechanical_engineering_salary_california.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisi/folipisexufosa.pdfIn PDF document text
    • http://vexolofifete.atwebpages.com/how_fast_is_a_club_car_precedent.pdfIn PDF document text
    • https://s3.amazonaws.com/pokixovuxik/pegodowijaxuf.pdfIn PDF document text
    • https://s3.amazonaws.com/widofafane/cosmos_quest_mobile_guide.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ecf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECF3 5044 bytes
SHA-256: 109777d093adc5cc9707e66cb94e73069a8bff1337c5b42406687bbd99c0d564
font_01_sfnt_off0000fde1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDE1 10484 bytes
SHA-256: ca3368588c233d14f0eca17d8ecb7d1ff4769dc112681496533aff153810952c
font_02_sfnt_off00012188.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12188 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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