Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c3888118a3036e4…

MALICIOUS

PDF

99.9 KB Created: 2021-04-22 21:36:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 18b4d2c481698097d052e4c06646a3ef SHA-1: 1737d82cd9cc0260e5d8994ea0343caa021d3d63 SHA-256: 8c3888118a3036e40a742787b188c9b2c7c26b7d548b25b39fa91d1b1e5a3166
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 0.9992

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://botokaw.ru/strik?utm_term=how+to+upgrade+audio+technica+lp120 PDF link annotation
    • http://shop50off.info/hard_boiled_egg_diet_plank8o7y.pdfIn PDF document text
    • http://kulinar2020.site/catia_v5_book_free_downloadarbeu.pdfIn PDF document text
    • http://zhigina.ru/the_indigo_spell_downloadhse4i.pdfIn PDF document text
    • http://lozhobelir.space/kubeketezevanipauxx7.pdfIn PDF document text
    • http://rubewox.sportsontheweb.net/xowudamiz.pdfIn PDF document text
    • http://fitokapss.xyz/lg_tromm_washer_dryer_combo_manualm1cvw.pdfIn PDF document text
    • http://olivamebel.com/57579410477sxqi1.pdfIn PDF document text
    • http://wigobike.sportsontheweb.net/kromosom_manusia_adalah.pdfIn PDF document text
    • http://about-central.com/75313527200lulb7.pdfIn PDF document text
    • http://instofficial.online/27358563431mjl5x.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://8ed6bd9f-de2b-4923-b7df-82f95eb18a03.filesusr.com/ugd/7fa32f_0345ed3ca0fb4462b9735f19473d0e4b.pdf?index=trueIn PDF document text
    • http://rijemow.onlinewebshop.net/apostila_de_aprendizagem_motora.pdfIn PDF document text
    • https://5e9c932d-19a8-4d5a-a970-d4bc0bcb832b.filesusr.com/ugd/bae0a0_b0eea8127698443780e8e270f801ffbc.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jeromopelurab/46116045540.pdfIn PDF document text
    • https://s3.amazonaws.com/bisiku/jafabopamavurik.pdfIn PDF document text
    • https://s3.amazonaws.com/xakajoziwibi/xakavinopatamod.pdfIn PDF document text
    • https://s3.amazonaws.com/gedesisumi/pozezeruwanolitapu.pdfIn PDF document text
    • https://s3.amazonaws.com/luramamelolem/how_to_change_opacity_in_premiere_pro_2020.pdfIn PDF document text
    • http://rofuvawitarul.atwebpages.com/english_grammar_tenses_exercises_with_answers.pdfIn PDF document text
    • http://fumibilulad.atwebpages.com/the_righteous_mind_jonathan_haidt_download.pdfIn PDF document text
    • https://4da44922-6ee1-4515-aed7-54c3d6b51f77.filesusr.com/ugd/243a28_eed15b7480a44a32a453f4edb88b8a47.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/mawesenasijoser/61253453145.pdfIn PDF document text
    • https://c6111751-42b6-464f-a8b1-832d492ff999.filesusr.com/ugd/3d0627_ae36b52d9cf64ab497626fcb274c9e29.pdf?index=trueIn PDF document text
    • https://0bdb67af-4c57-4a6e-9706-714cc80719f5.filesusr.com/ugd/fc840b_14b343aed4644ab2bc54f28f3f5d2e99.pdf?index=trueIn 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000144ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x144AD 5536 bytes
SHA-256: 87c3aa56bcbf938c15b614853154cdaccea3a32d96fa159cde9abd90d8eeb0b9
font_01_sfnt_off00015793.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15793 13336 bytes
SHA-256: d91a6a74327b7b6410ee64cdda401575632c48ad4cb0455644a2f07770ff1af3

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