Malicious PDF — malware analysis report

Static analysis result for SHA-256 8361d05212d16676…

MALICIOUS

PDF

73.0 KB Created: 2021-03-28 17:34:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 0da4e29d4836ddbf5555af9fad1aec87 SHA-1: d5fcd8c80d84924cb728e3012cf75638b03bc04a SHA-256: 8361d05212d16676455bcbab96330d6773f07c92bc232853e31b45dd8932a127
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 0.9998

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://jottigo.ru/123?utm_term=machinery+lubrication+reference+guide+pdf PDF link annotation
    • http://xelasurugopu.mywebcommunity.org/happiness_beyond_thought_a_practical_guide_to_awakening.pdfIn PDF document text
    • https://cdn.sqhk.co/pogezasamu/hpawifa/lynx_fortnite_skin_blue.pdfIn PDF document text
    • https://cdn.sqhk.co/duvapegoleva/0QIRdLA/cfo_jobs_atlanta_linkedin.pdfIn PDF document text
    • http://giwapozolaleg.mypressonline.com/bc_punmia_building_construction_download.pdfIn PDF document text
    • https://cdn.sqhk.co/jarebomu/gJiijxH/sevovugedupuver.pdfIn PDF document text
    • https://cdn.sqhk.co/veleviziwew/Uw0eGAk/prayer_to_holy_spirit_for_guidance_catholic.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/kubafezin/r12_to_134a_conversion_kit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c437692-fbcb-4108-b22c-d15cbb09c2ce/nowosatarusufedewerodil.pdfIn PDF document text
    • http://kulebosux.myartsonline.com/adt_cellguard_for_pulse.pdfIn PDF document text
    • https://s3.amazonaws.com/gurupixabogivaz/manual_ahoyadora_stihl_bt_360.pdfIn PDF document text
    • https://s3.amazonaws.com/tetofamuxulil/95847226607.pdfIn PDF document text
    • https://s3.amazonaws.com/bisapovepizaj/actor_resume_template_2018.pdfIn PDF document text
    • http://fazobelo.onlinewebshop.net/bovine_serum_albumin_structure.pdfIn PDF document text
    • https://s3.amazonaws.com/jefobexapulow/logo_merchandise_no_minimum.pdfIn PDF document text
    • http://xumuritikoxuk.myartsonline.com/2020_and_2020_broward_school_calendar.pdfIn PDF document text
    • https://s3.amazonaws.com/rekorewexidiwo/does_the_martingale_strategy_work.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b33db7df-42c8-47f0-9a45-b092ee099ccd/when_will_disneyland_in_anaheim_open.pdfIn PDF document text
    • https://s3.amazonaws.com/fogibi/am_i_pseudo_intellectual.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_off0000e15f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE15F 5484 bytes
SHA-256: 1cc755a197c6718da6af420e6dd3a43f4734826a3a71bd48485d8635da657a8e
font_01_sfnt_off0000f416.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF416 10300 bytes
SHA-256: ad0e745e48e5ce1b1f8a951de64652293a115a5b30e2f5fbeec28f15fc41c6b9