Malicious PDF — malware analysis report

Static analysis result for SHA-256 e17a005b2f52a2f3…

MALICIOUS

PDF

77.1 KB Created: 2021-03-23 08:14:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: a8b2ae94008d833477e8e70480ff5653 SHA-1: 5abceb5e9136909be80609e307ba4d592e84af13 SHA-256: e17a005b2f52a2f3e0d31b81d3229cc21ffcdedd94d3793a457e7880d4e8ba4b
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9997

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://crophysi.ru/award?keyword=lipid+metabolism+pdf+notes PDF link annotation
    • http://difodalutovirub.iblogger.org/itunes_12._9._4_for_mac.pdfIn PDF document text
    • http://realwockyc.info/rijafuxixesozhve1k.pdfIn PDF document text
    • https://cdn.sqhk.co/vekuperik/ehesSii/wodugu.pdfIn PDF document text
    • https://cdn.sqhk.co/maxevurux/clmZajd/foosball_table_parts_names.pdfIn PDF document text
    • http://subfamjtii.site/borefejonubegemevl1kn0.pdfIn PDF document text
    • https://cdn.sqhk.co/gijimexuv/C3ijgge/lebara_data_top_up_germany.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/xulepiwa/beata_pawlikowska_ksiki.pdfIn PDF document text
    • https://s3.amazonaws.com/fowonaxul/kuginisepuvowide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/858e3ec8-c012-46d2-a304-b155dc170e26/50527339274.pdfIn PDF document text
    • http://zefuxaninegug.epizy.com/apple_developer_center_xcode.pdfIn PDF document text
    • https://s3.amazonaws.com/tomamujuf/insinkerator_steaming_hot_water_tap_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/xapijifas/bolo_de_chocolate_fofinho_forma_quadrada_grande.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ace38a4e-37a8-4ec3-a94a-75b63103422d/lugudavumub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c092e66-3e23-44c6-bbee-a804fdb7587d/does_rca_tv_have_a_reset_button.pdfIn PDF document text
    • https://s3.amazonaws.com/vuliwisuwig/idaho_power_outage_reporting.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxenipup/list_of_acceptable_scrabble_two_letter_words.pdfIn PDF document text
    • https://s3.amazonaws.com/xozeb/gafalu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d723247c-f672-4783-bee4-621b77ff81dc/descargar_libro_aprendizajes_clave_para_la_educacin_integral_preescolar.pdfIn PDF document text
    • http://gonumarimemax.epizy.com/url_encode_angularjs_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db7dfe08-a53f-470c-93fa-48b0c51899f2/graco_milestone_3_in_1_convertible_car_seat_infant_to_toddler_car_seat.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_off0000f010.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF010 5172 bytes
SHA-256: 8359aec92b1afbe698be44bd93d33489ecc4a1e5fd315d4e7c1b25266cbad832
font_01_sfnt_off00010194.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10194 11268 bytes
SHA-256: dc4d8c66763eec046d5890e646b52a9a6cb35e3ce8a814ce3f862e988301fba6

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