Malicious PDF — malware analysis report

Static analysis result for SHA-256 c97bf50feed05167…

MALICIOUS

PDF

179.1 KB Created: 2021-02-25 00:03:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 7dfa5280da04f36bc7d3a2dd7c9ed0a9 SHA-1: 29439d4432567d632aa0364bff50b529b918efdf SHA-256: c97bf50feed05167ff592d8510f4ac369fe03feb8ce1f281d7a125dd489f1b06
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that mimics a search query, likely intended to trick the user into visiting a malicious site. ClamAV detection as 'Pdf.Phishing.Trojan' and ML classification further indicate malicious intent. No scripts were extracted, but the PDF structure and embedded URI are strong indicators of a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9927

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
  • 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://druttle.ru/strik?utm_term=how+many+volumes+of+tokyo+ghoul+manga+are+there PDF link annotation
    • http://mumolazesinidix.getenjoyment.net/jixovabakanaguxakusogojo.pdfIn PDF document text
    • http://rilomenininun.getenjoyment.net/casio_5081_analog_time_set.pdfIn PDF document text
    • https://buliduxefexefux.weebly.com/uploads/1/3/1/6/131636978/397253.pdfIn PDF document text
    • http://luxasireku.sportsontheweb.net/vanoditobitutuza.pdfIn PDF document text
    • https://savaxibinis.weebly.com/uploads/1/3/3/9/133997587/6820926.pdfIn PDF document text
    • http://xuxetosufuzo.getenjoyment.net/sears_washer_and_dryer_combo_sale.pdfIn PDF document text
    • http://viniveba.mywebcommunity.org/longman_academic_writing_series_3.pdfIn PDF document text
    • https://mezamelakinates.weebly.com/uploads/1/3/5/3/135304028/5382838.pdfIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/rowubunak/cdr_file_opener_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jokotaziweluge/acetilcolina_y_memoria.pdfIn PDF document text
    • https://s3.amazonaws.com/vasofirida/battery_saver_pro_2019_apk_free.pdfIn PDF document text
    • http://satawakerexe.atwebpages.com/12727451595.pdfIn PDF document text
    • https://s3.amazonaws.com/jiguwuzobozobaz/jinja_template_python.pdfIn PDF document text
    • https://s3.amazonaws.com/golepe/malafujadomugavosabudix.pdfIn PDF document text
    • https://s3.amazonaws.com/werowibovezoje/la_familia_de_pascual_duarte_en_ingles.pdfIn PDF document text
    • https://s3.amazonaws.com/fikuvine/sample_bio_data_form_for_teachers.pdfIn PDF document text
    • https://s3.amazonaws.com/donarepemi/tatenim.pdfIn PDF document text
    • https://s3.amazonaws.com/peveziwoguxuzam/heaphy_track_guided_walks.pdfIn PDF document text
    • https://s3.amazonaws.com/sazixipame/c_programming_language_bangla_tutorial.pdfIn PDF document text
    • https://s3.amazonaws.com/pavujiniz/60270114595.pdfIn PDF document text
    • http://kavibajegis.onlinewebshop.net/el_nombre_de_la_rosa_castellano.pdfIn PDF document text
    • https://s3.amazonaws.com/dogevazapiwediw/zejowogigepewimexiweko.pdfIn PDF document text
    • http://nufiwimuzobo.onlinewebshop.net/pipefajoxozibivakalumo.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://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000251e8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x251E8 17060 bytes
SHA-256: 5ee48ef80f9146488bd7052061a1f8e06f443d90f972132e105c7b20b608a357
font_00_sfnt_off000138da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x138DA 87516 bytes
SHA-256: de1e88ddd074fc55098b4b2b4162c83912cc6ca43ba0b007d2ca5d65a06e08de
font_01_sfnt_off00023f70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x23F70 5460 bytes
SHA-256: a22cbc0bddbf37a5b71c566931936af52cb2ffb56986b7b104da68a36232eb4f
font_03_sfnt_off00028130.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x28130 12360 bytes
SHA-256: 8fa099b036d8474041408aa3d39d83da8d8c4d673435ac5d75f7a349ad6cba5a
font_04_sfnt_off0002a8eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A8EB 16072 bytes
SHA-256: bf4ab31430389bf485bb31cdb084220213cce32017bc6689ef711d4e78092607

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