Malicious PDF — malware analysis report

Static analysis result for SHA-256 b473465ba38d24a4…

MALICIOUS

PDF

66.8 KB Created: 2020-12-08 10:47:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 0702088850f94a33bac93d41bdbe492c SHA-1: 536bee6f2704145b9caf539f3281c36e16e3804f SHA-256: b473465ba38d24a4aca9ebf347f3a35331395f20dc0c9eabf5d0f677a0cc4476
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. An external URI, 'https://traffset.ru/strik?utm_term=burrito+bison+3+launcha+libre+hacked', was extracted, suggesting the document is designed to redirect users to a potentially harmful site. The document body, though heavily obfuscated, contains references to 'wkhtmltopdf' and a date, which may be part of a lure or obfuscation technique.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffset.ru/strik?utm_term=burrito+bison+3+launcha+libre+hacked PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4378641/normal_5fafad70e99eb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392237/normal_5fb80a997e571.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc36151a13a450bab040bac/t/5fc435971972c46e3c22decc/1606694296469/where_are_you_going_my_little_one_lyrics.pdfIn PDF document text
    • https://s3.amazonaws.com/befevifa/singular_and_plural_possessives.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc787baf2297e36a9ff0de1/t/5fc9a55c81b71b408591ad70/1607050589698/simplenote_android_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/bubodeliza/38682430481.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc512c9bf71053ccb2aa307/t/5fc5bd30145a8629dc7857f7/1606794545895/44631289514.pdfIn PDF document text
    • https://s3.amazonaws.com/jafujasiwetid/jilutogedolatokagunexuv.pdfIn PDF document text
    • https://s3.amazonaws.com/jikopot/70100450380.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/xudovilidu.pdfIn PDF document text
    • https://s3.amazonaws.com/rotafasaniz/duluth_ordean_east_middle_school.pdfIn PDF document text
    • https://s3.amazonaws.com/tokatefozude/ricoh_mp_3055_user_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/jeromopelurab/depression_treatment_guidelines_nice.pdfIn PDF document text
    • https://s3.amazonaws.com/vibasujefir/associao_de_capacitores_mista.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbffe61bf71053ccb0b2b06/t/5fc138524e98326c023ca2d0/1606498387350/62790638066.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0c162085bf90c0efc5341/t/5fc2c55408845d0924e52deb/1606600021112/ucla_regents_scholarship_notification_2018.pdfIn PDF document text
    • https://www.kongregate.com/games/jui...-launcha-libreIn 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_off0000c587.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC587 5444 bytes
SHA-256: a80d2455509f02b6c2e0d88ce86f5365f28314052c9b8d627b992b628101246a
font_01_sfnt_off0000d7f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7F9 12212 bytes
SHA-256: bb7909aaa71d57e2e6c3883e607d0fa203338236c99325594aaeeebe746a92a5

Open this report in the interactive analyzer, or submit your own file for analysis.