Malicious PDF — malware analysis report

Static analysis result for SHA-256 da655f92c126f796…

MALICIOUS

PDF

91.1 KB Created: 2021-05-21 08:47:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: fe681f12d3957c7494cbe956b05e746f SHA-1: 840ed1f92e66cf29d2f713f31a9264fd6e3bdac6 SHA-256: da655f92c126f7964263feec3f947ef8b005be4d60900a9fd7f696bb6833ae23
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 0.9991

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://druttle.ru/strik?utm_term=christ+the+healer+ff+bosworth+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4461763/normal_6012b7b1e4ac1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416671/normal_6066049fabbff.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450504/normal_5fed68110035b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470209/normal_5feb605db02e5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425255/normal_605f88eb15a8e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413363/normal_5fd8765f64d12.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490132/normal_606bee0054dae.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408720/normal_5fc61e42a3de3.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/673e6bd1-d4fd-4040-9feb-67a16941f05b/76135386990.pdfIn PDF document text
    • https://s3.amazonaws.com/negonanopix/cannery_row_john_steinbeck.pdfIn PDF document text
    • https://s3.amazonaws.com/napejaxosinages/global_trends_in_human_resource_management.pdfIn PDF document text
    • https://s3.amazonaws.com/dudurat/kegajomemelubimerepesu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a2f77a7-0811-478b-bd11-b15eeca8fafb/smoothie_recipes_for_weight_loss_with_spinach.pdfIn PDF document text
    • https://s3.amazonaws.com/bezegoluzose/vobafixuresopejifigupij.pdfIn PDF document text
    • https://s3.amazonaws.com/zikeko/wejumanovivof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/268765bd-d28b-4013-b9de-a0b12e3388fb/mivumix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/394c1b59-f47d-4095-821b-d11a2e4251b3/81946731950.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b21e4aa-91c0-498d-9b26-876a621e15bb/lawn_mower_repair_scotts_hill_tn.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91ebb725-3e93-4a47-9048-b841f975017c/lincoln_power_mig_210_mp_multi_process_welder_with_tig_kit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05804fcb-8484-4823-8673-796d2338d64c/40165795987.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d83c6c7d-209d-4d28-9b27-ea9a12a2532f/why_does_god_make_us_lonely.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56b58c73-75fe-4f2f-a14d-094cecddd620/16323982884.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5add034-5f14-45cf-b5e0-b900c5b23936/miller_xmt_304_cc_cv_welder.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d5fda69-81fa-4e63-8f2c-2ec4f4c86e0a/mojejoke.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_off000127ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127BA 5264 bytes
SHA-256: 5c5084b8dc014579e2cd782a5c729635852edc8d0760b97ac75150b8c45ed190
font_01_sfnt_off000139a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x139A0 10712 bytes
SHA-256: 84b403b8c5e2bb36ad966617d73ffb5c5fcf34f3a4a89db47dacc3cad4e39f5d

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