Malicious PDF — malware analysis report

Static analysis result for SHA-256 61f0834b5852a99c…

MALICIOUS

PDF

83.7 KB Created: 2021-02-25 05:13:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 5ab97e52c9006fe29406019b86ebdad0 SHA-1: 955d93d1515b251aca7a5ef2f5791d6bb95c56be SHA-256: 61f0834b5852a99c643d618adb715246a6ab0034019d60e6681d4c3ca2ff7807
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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://jottigo.ru/123?utm_term=argumentative+essay+examples+middle+school PDF link annotation
    • http://scotiaenlineape-personas.com/38383961230xoth.pdfIn PDF document text
    • https://cdn.sqhk.co/lenawemijixe/alvhhgj/espn_mlb_stats_team.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401515/normal_5fd272561cda3.pdfIn PDF document text
    • https://cdn.sqhk.co/bisuligiga/8ififqk/32788362313.pdfIn PDF document text
    • https://cdn.sqhk.co/rajunakeb/OjjW8hj/54203081392.pdfIn PDF document text
    • https://cdn.sqhk.co/xolofiwano/eihg5Th/61043048424.pdfIn PDF document text
    • http://tefukuk.iblogger.org/75988542693.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lesodabat.epizy.com/reading_plus_answers_level_hie_earthquake.pdfIn PDF document text
    • https://s3.amazonaws.com/viwoxuz/crosswords_with_friends_answers_3_25_19.pdfIn PDF document text
    • https://s3.amazonaws.com/sorogamat/maths_worksheets_ks1_year_2.pdfIn PDF document text
    • http://zaxesagujudiwa.epizy.com/81624012637.pdfIn PDF document text
    • https://s3.amazonaws.com/dixaleko/360_degree_feedback_evaluation_forms.pdfIn PDF document text
    • https://s3.amazonaws.com/fadedosi/1648116832.pdfIn PDF document text
    • https://s3.amazonaws.com/satudifin/black_mirror_episodes_parents_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/mexesazaxasa/bafajibigolidobikupowagi.pdfIn PDF document text
    • https://s3.amazonaws.com/poguvelefa/uc_browser_for_iphone_4.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_off0001096a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1096A 5704 bytes
SHA-256: 8c149a1193369e92610ec248aab600d05e4bb410aa8c50ba2af1d186fc0e07d1
font_01_sfnt_off00011cc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CC0 10808 bytes
SHA-256: d861c327455ffb94603ca1b3f5b801e7c23d37782acd91a57d3121877b703061