Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0f493796cf0f9ab…

MALICIOUS

PDF

78.9 KB Created: 2021-03-17 10:16:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 7d3e2030b929fd72ab5697c6a309db0d SHA-1: 1c2164acb6a7e7ab59f9c34f696de529b71115e9 SHA-256: a0f493796cf0f9ab4c3c8f3e81399d4e303e6b1f903ae49e6a2218e628de90fa
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document body, though heavily obfuscated, contains references to 'Python data analysis book review' and 'wkhtmltopdf', suggesting a lure. The presence of external URIs, such as 'https://zajinet.ru/strik?utm_term=python+data+analysis+book+review', indicates an attempt to redirect the user to a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

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://zajinet.ru/strik?utm_term=python+data+analysis+book+review PDF link annotation
    • http://bugofafixose.iblogger.org/vazisapokaxininaluzamiler.pdfIn PDF document text
    • https://cdn.sqhk.co/dolubivo/iBwnQij/kofapafisikaditovupuwem.pdfIn PDF document text
    • https://wamazuwo.weebly.com/uploads/1/3/1/3/131380988/jeretosurulezopabis.pdfIn PDF document text
    • http://lunesygets.xyz/fopotavobovutuduretawod3txz2.pdfIn PDF document text
    • https://cdn.sqhk.co/xogovofofi/Mherzpi/glenfiddich_age_of_discovery_19_years.pdfIn PDF document text
    • https://cdn.sqhk.co/xutazazo/wGSGiiZ/condado_menu_to_go.pdfIn PDF document text
    • https://laludigulasi.weebly.com/uploads/1/3/1/4/131437637/gaxatir.pdfIn PDF document text
    • https://cdn.sqhk.co/remimidotomi/dJggubq/rakoletixavesitaf.pdfIn PDF document text
    • https://barurusijibipek.weebly.com/uploads/1/3/0/7/130740419/e3b37225d65a0.pdfIn PDF document text
    • http://kprovk.xyz/nivobapuxasetlsqi.pdfIn PDF document text
    • http://sagadutotituvop.22web.org/iron_jawed_angels_guided_questions_answers.pdfIn PDF document text
    • http://tosety.xyz/68655532365afjxo.pdfIn PDF document text
    • https://vijibasotaxeja.weebly.com/uploads/1/3/5/9/135990507/6520786.pdfIn PDF document text
    • https://jakazopafekitab.weebly.com/uploads/1/3/4/6/134632018/2438206.pdfIn PDF document text
    • http://dutilajojav.22web.org/subjunctive_mood_exercises_with_answers_ks2.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/nojemi/30521764851.pdfIn PDF document text
    • https://s3.amazonaws.com/xapota/katalez.pdfIn PDF document text
    • https://s3.amazonaws.com/buxoparadazegu/93782819703.pdfIn PDF document text
    • http://vitafunajubala.rf.gd/fejurukafipukaresasuf.pdfIn PDF document text
    • http://jupojef.rf.gd/1035481391.pdfIn PDF document text
    • http://rejeremonuwiz.rf.gd/addition_equation_and_conclusion_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/gifiz/65082732526.pdfIn PDF document text
    • http://zetipetarot.rf.gd/33644259747.pdfIn PDF document text
    • http://fanolegib.rf.gd/5048645936.pdfIn PDF document text
    • https://s3.amazonaws.com/divelatoxa/68561819421.pdfIn PDF document text
    • http://finabupotokuko.epizy.com/among_the_barons_audiobook.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_off0000f731.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF731 5372 bytes
SHA-256: 7857716dd6264eea386fb64e4a311e59dba16c5484ab1742f688150fcc31cfb2
font_01_sfnt_off00010984.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10984 10792 bytes
SHA-256: 340430c187494d60b88bb29219bc93dac3970a0c356ef34da79d79dde1c212bd

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