Malicious PDF — malware analysis report

Static analysis result for SHA-256 087a504c36977834…

MALICIOUS

PDF

73.3 KB Created: 2021-02-23 03:52:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: deb6507b340a6239407410e43fe1cb62 SHA-1: 94ed48479acca39bad94c3f895a12720b6eff69b SHA-256: 087a504c369778341e5233eac116dd2ecd19ad406b8357f2caa9139250f5757e
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://maypoin.ru/wix?keyword=can+crushing+experiment+worksheet PDF link annotation
    • http://vabapagamowese.22web.org/37141142543.pdfIn PDF document text
    • http://wanikagupefurav.22web.org/mfj_993b_tuner.pdfIn PDF document text
    • http://gopubewigofopa.iblogger.org/ruwubujib.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/jitimesolagun/publix_sheet_cake_flavors.pdfIn PDF document text
    • https://s3.amazonaws.com/megujobemegor/anlise_multivariada_de_dados.pdfIn PDF document text
    • https://s3.amazonaws.com/pulavokaxe/best_hollywood_movies_links.pdfIn PDF document text
    • http://vanidivab.epizy.com/selewuv.pdfIn PDF document text
    • https://s3.amazonaws.com/kalanejaxutilif/67929506147.pdfIn PDF document text
    • http://bufiwobad.rf.gd/programa_para_dirigir_honores_ala_bandera_en_secundaria.pdfIn PDF document text
    • http://retudazugo.rf.gd/bgg_terraforming_mars_colonies.pdfIn PDF document text
    • https://s3.amazonaws.com/lanorolowu/wowamajapikupiso.pdfIn PDF document text
    • https://s3.amazonaws.com/geraromu/synecdoche_examples.pdfIn PDF document text
    • http://lopovimefadepom.epizy.com/sc_caste_list_in_up_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/vovopafubipu/sqlplus_format_output_line_length.pdfIn PDF document text
    • https://s3.amazonaws.com/vovuzize/romeo_y_julieta_vintage_cigar_review.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_off0000e161.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE161 5444 bytes
SHA-256: 074382546ca7bcd8746b835577b807730e9f1487f71b1d198c51acf996dd7b80
font_01_sfnt_off0000f3d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3D1 10556 bytes
SHA-256: a4ed9926aba3ff996ce97834d5ffb5309c43f2cafa5eae5230634ad7fccfb4e4