Malicious PDF — malware analysis report

Static analysis result for SHA-256 68a4e24638ac8e8f…

MALICIOUS

PDF

76.3 KB Created: 2021-03-31 22:18:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 08be781daf1c33dbe7789db46b028652 SHA-1: 6065f45402c83cbe3494410648b5109ea3371521 SHA-256: 68a4e24638ac8e8fac42fc1eeac437b6428937195381761298a276686c4bfd92
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'https://botokaw.ru/strik?utm_term=python+setuptools+install+egg', suggesting a phishing or redirection attempt. The document body, though heavily obfuscated, contains references to 'Python setuptools install egg' and 'wkhtmltopdf', which may be part of a lure to trick users into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://botokaw.ru/strik?utm_term=python+setuptools+install+egg
    • http://topcreditcheck.info/wenurorupopefelikumobi6a06o.pdf
    • http://bapipakaroxi.22web.org/pamorewanedezafot.pdf
    • http://pazefezos.mywebcommunity.org/stairway_to_heaven_in_hawaii_pictures.pdf
    • http://vozajomaralamer.mygamesonline.org/alopecia_frontal_fibrosante_tratamento.pdf
    • http://azakalaza5.xyz/what_were_the_major_patterns_of_native_american_lifeg93c2.pdf
    • http://roserubusigiwij.mywebcommunity.org/sepamo.pdf
    • http://xojanefod.mygamesonline.org/categorias_del_materialismo_historico.pdf
    • http://vumamanepu.sportsontheweb.net/daycare_attendance_sheet.pdf
    • http://vadosixajobirug.mygamesonline.org/55601865400.pdf
    • http://vigikigopaloze.medianewsonline.com/21415180901.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/ragejufa/vedeloval.pdf
    • https://s3.amazonaws.com/gawabog/30368150746.pdf
    • http://kepawomokatuke.myartsonline.com/reduction_formula_integration_by_parts.pdf
    • https://s3.amazonaws.com/navoburarovada/damepederukakom.pdf
    • https://s3.amazonaws.com/fukepez/how_does_the_australian_court_system_work.pdf
    • http://nesenavepino.epizy.com/acer_chromebook_15_cb3-532_reset_button.pdf
    • https://s3.amazonaws.com/gateme/24805110215.pdf
    • http://vekalaluno.epizy.com/tisemonebigizarifewak.pdf
    • https://s3.amazonaws.com/divelatoxa/soxik.pdf
    • https://s3.amazonaws.com/sefabe/how_to_write_name_in_chinese_symbols.pdf
    • https://s3.amazonaws.com/sinamozagemoger/64754445199.pdf
    • https://s3.amazonaws.com/fofeguj/75670895521.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0b1.bin
26d571567e787522a043190874bfd2f06e1b4245a65fc6a4bb0944908aee77d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF0B1 5088 bytes
font_01_sfnt_off00010209.bin
7cb958ea1f37f2a65b1fd178b9b06aef85b3c00ac334b46e3b61a9fadd9cb936		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10209 9980 bytes

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