Malicious PDF — malware analysis report

Static analysis result for SHA-256 a79589f315a490c2…

MALICIOUS

PDF

86.3 KB Created: 2021-02-22 21:41:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: e6e12ac86b036bc3b53d0d8978c7d9c0 SHA-1: 83e3ceac64bf0726a9788c5fe534af7d5e2968a3 SHA-256: a79589f315a490c21aff253ec93895ac877588d3f01223c7c2e11a3bd16c4319
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that redirects to a malicious domain, as indicated by the PDF_URI heuristic and ClamAV detection. The ML classifier also flagged this PDF as malicious with high confidence. The document body, though heavily obfuscated, appears to be a lure related to online yoga teacher training, suggesting a phishing or scam attempt.

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://bologen.ru/123?utm_term=best+online+yoga+teacher+training+2021 PDF link annotation
    • https://cdn.sqhk.co/remavaveso/2njdieK/coffin_nails_long_press_on.pdfIn PDF document text
    • https://cdn.sqhk.co/puzadowoke/lD1gjdi/zepeto_apk_para_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/foturozav/BMhfJjb/fulajexowodogon.pdfIn PDF document text
    • https://cdn.sqhk.co/jutafegobexe/ghijFjd/homeschool_dance_programs_near_me.pdfIn PDF document text
    • http://opensol.xyz/diagrama_de_conexion_motor_monofasico_siemenswpjo2.pdfIn PDF document text
    • https://cdn.sqhk.co/ratufewebu/hb9ikQM/83773615880.pdfIn PDF document text
    • http://help-business-media.com/gebagoda0dbdm.pdfIn PDF document text
    • https://cdn.sqhk.co/sepagumal/Rprhbha/teddi_mellencamp_agent.pdfIn PDF document text
    • https://cdn.sqhk.co/vibebexez/L6HRjdC/66950197412.pdfIn PDF document text
    • https://cdn.sqhk.co/genizataxom/ghTvibs/avee_music_player_pro_mod_apk_revdl.pdfIn PDF document text
    • https://cdn.sqhk.co/fipimomozuk/1ihvOWt/wikawonenabugabubajulivip.pdfIn PDF document text
    • http://bestunew.xyz/cabify_conductor_app_iosg3mby.pdfIn PDF document text
    • https://cdn.sqhk.co/xaranoraf/tjhhcii/loniw.pdfIn PDF document text
    • https://cdn.sqhk.co/sepokafaru/v0hji9k/bird_of_paradise_plant_indoor_care.pdfIn PDF document text
    • https://cdn.sqhk.co/sazelusup/ZuOKkgc/hunting_nut_biscuits.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kugugoroxe.rf.gd/88936685163.pdfIn PDF document text
    • https://s3.amazonaws.com/fifomi/bandera_de_mexico_vector_free.pdfIn PDF document text
    • http://ranoponadugat.epizy.com/barb_wire_full_movie_480p.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_off000114b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114B5 5536 bytes
SHA-256: c2902943d76b422b75652b3fcac5b2bf2cd5bb95c53499510cf265c532dd0e1a
font_01_sfnt_off00012792.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12792 10728 bytes
SHA-256: b4584548095437973e266956c734cc56f7d6504477e204912e82b7a2196d24b4

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