Malicious PDF — malware analysis report

Static analysis result for SHA-256 43ef5010d68bb904…

MALICIOUS

PDF

85.7 KB Created: 2021-05-11 03:49:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: ae39c97b09b6467a832cba73c13638f3 SHA-1: 58b9f7befa278be3a495dbe384593d5a2d9670f1 SHA-256: 43ef5010d68bb90465b8e5ff04654ffccd7dedc5cb36bff53925eac0f97eb329
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 0.9990

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/strik?utm_term=what+does+chlorophyll+consist+of PDF link annotation
    • http://samo-katim.ru/card_jitsu_club_penguin_rewrittenz2uf8.pdfIn PDF document text
    • http://mitsumoro.ru/towuwibozirufaxa7t3up.pdfIn PDF document text
    • http://fatunatet.getenjoyment.net/96749223548.pdfIn PDF document text
    • http://bifozitixexidad.mygamesonline.org/gejexutikimajewadilarale.pdfIn PDF document text
    • http://trokot-shtorki.online/70127796369tfk19.pdfIn PDF document text
    • http://natikolom.site/cabela_s_big_game_hunter_downloadzket9.pdfIn PDF document text
    • http://edevletorg.com/kopokopopibadobolo71j6f.pdfIn PDF document text
    • http://betijeduw.getenjoyment.net/rolefodoxolanexes.pdfIn PDF document text
    • http://detonic-romania.website/gakiwasuvawiluvigugize5sljj.pdfIn PDF document text
    • http://cashbackmoney.info/posavilunigosutakew5qa3s.pdfIn PDF document text
    • http://oneshops.space/didomegawz7ao.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/jolituzoji/tumosafaza.pdfIn PDF document text
    • https://s3.amazonaws.com/dudurat/pinejugexotas.pdfIn PDF document text
    • https://s3.amazonaws.com/galinikagopit/what_is_moolah_app.pdfIn PDF document text
    • https://s3.amazonaws.com/topipovikapari/rapiporib.pdfIn PDF document text
    • https://s3.amazonaws.com/kifutizijebuj/3861422078.pdfIn PDF document text
    • https://s3.amazonaws.com/daniwodug/zixajubopiwalarazeke.pdfIn PDF document text
    • https://s3.amazonaws.com/lomogas/fesujasitafofu.pdfIn PDF document text
    • http://nujilexulajuwup.atwebpages.com/14317119067.pdfIn PDF document text
    • https://s3.amazonaws.com/vibasujefir/toyota_camry_hybrid_maintenance_schedule.pdfIn PDF document text
    • https://s3.amazonaws.com/setikizo/87205982472.pdfIn PDF document text
    • https://s3.amazonaws.com/towutoginadivu/bushnell_voyager_700x76mm_reflector_telescope_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/zopenave/riwanuwomenuxatirabedop.pdfIn PDF document text
    • https://s3.amazonaws.com/pegozegi/anton_chekhov_short_stories_gutenberg.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001064f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1064F 5148 bytes
SHA-256: 6ca7bb65fa95945a535ca7f0c0dde4e27b478b27920b0f4cfe78c8c6a4937c77
font_01_sfnt_off000117d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117D9 10444 bytes
SHA-256: d6c32faacae43c5fe469264ba15903c87c61c435d72a58e66cb53f98701aef0d
font_02_sfnt_off00013b59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B59 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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