Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d2d876d86ee96c5…

MALICIOUS

PDF

82.2 KB Created: 2021-04-04 06:10:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: b83e7ac44c05964e4a086aa8326edf1d SHA-1: ad1b6ecb17becbfb46eaa44fc5b5af434cffe3d1 SHA-256: 7d2d876d86ee96c57bb566d2450629222eeb838b74b2eae1d460787d47f4f557
96 Risk Score

Malware Insights

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

The file is a PDF document flagged by ClamAV as a phishing trojan. It contains an embedded URL pointing to 'nipisod.ru', which is likely a malicious domain used for phishing or malware distribution. The document body, though heavily obfuscated, suggests a product-related lure. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://nipisod.ru/strik?utm_term=panasonic+kx-tgp550+sip+dect+phone PDF link annotation
    • http://sosyaltakipcipanelin.com/explain_the_economic_causes_of_french_revolutions1nnh.pdfIn PDF document text
    • http://biomanix.best/583951059858hph4.pdfIn PDF document text
    • http://eurosett.net/good_night_image_hd_free_shayarijwi3a.pdfIn PDF document text
    • http://ketadiets.site/34896805301qtj86.pdfIn PDF document text
    • http://gisisavodure.22web.org/chiedere_informazioni_traduci_in_spagnolo.pdfIn PDF document text
    • http://connexion-amelii.xyz/dan_simmons_hyperion_charactersz1i9x.pdfIn PDF document text
    • http://airet.space/rosimekefonufelexoqc6d.pdfIn PDF document text
    • http://cpskras.website/75614787614pikr9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/80f3e495-28aa-409e-8317-79f66c40e661/jitefa.pdfIn PDF document text
    • https://s3.amazonaws.com/xalasawu/barclaycard_business_card_holder_application_form.pdfIn PDF document text
    • https://s3.amazonaws.com/mexavofezoxi/kenmore_elite_he3_dryer_error_code_e1.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4413c871-6b69-4c9b-b8af-d4a798469441/are_volvos_expensive_to_repair_nz.pdfIn PDF document text
    • https://s3.amazonaws.com/kikunojulejuj/cazadores_de_sombras_serie_actores.pdfIn PDF document text
    • https://s3.amazonaws.com/xupimaral/jujenu.pdfIn PDF document text
    • http://kurorasi.rf.gd/antinomy_of_common_flowers.pdfIn PDF document text
    • https://s3.amazonaws.com/fadupazageraf/caspian_report_twitter.pdfIn PDF document text
    • https://s3.amazonaws.com/teximikamukubo/rikefevelotov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6603cbd1-baf8-42b8-98af-c7f988d8ec7e/44832721670.pdfIn PDF document text
    • https://s3.amazonaws.com/rekorewexidiwo/49074530651.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_off0000f202.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF202 4368 bytes
SHA-256: d1fd5c318dd0aacb3d4d996adeac510ee0f7fcd889bdc58349cd11841e5eed53
font_01_sfnt_off00010117.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10117 5640 bytes
SHA-256: 733d8b68e1b45353fefc526abd053450b54c79963c5cedceb5e211f322872edf
font_02_sfnt_off0001145d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1145D 10800 bytes
SHA-256: c57b59e6cf6f43b2a855aef3be654070bc9d29c0a746b5e1a5acbd2e252a6b00

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