Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc10e3386873ad17…

MALICIOUS

PDF

65.3 KB Created: 2020-12-24 02:54:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 508c5e6184f5bfbda808fd938cc70910 SHA-1: c57f87333eb2e2d73795a90c3b6ea870318fa82b SHA-256: bc10e3386873ad170d927a06e10c808df0cd2e0abe7ad2b9f74f63beed48f761
154 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 routes users through malicious redirector infrastructure. 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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://cctraff.ru/aws?utm_term=auto+increment+sqlite+android+studio In PDF document text
    • https://cdn.sqhk.co/gibuzini/5j8whhn/vujigonumokanosonebo.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/859faa2d-7445-4002-958e-af6a3b2f38c7/download_paper_towns_free.pdfIn PDF document text
    • https://s3.amazonaws.com/degagaziv/star_wars_jedi_fallen_order_merrin_fanfiction.pdfIn PDF document text
    • https://s3.amazonaws.com/tipikaxe/ppt_templates_free_for_education.pdfIn PDF document text
    • https://s3.amazonaws.com/fefurorobumi/setez.pdfIn PDF document text
    • https://s3.amazonaws.com/tufujifinobiro/8032638457.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/835498a2-cc3a-4975-9a7d-3a6a3d68587d/pidikaxesusidobuvonevona.pdfIn PDF document text
    • https://s3.amazonaws.com/jidagafinuxesu/whatsapp_for_windows_8._1_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/ribowexulo/critical_discourse_analysis_dissertation.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51927c70-b455-4e67-b6fa-0d3b03e4f8a9/puntos_sobresalientes_de_salmos_119.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d647222-349a-4285-be07-9f784d5eda0f/19909661748.pdfIn PDF document text
    • https://s3.amazonaws.com/lomogas/mckay-dee_behavioral_health_outpatient_ogden_ut.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_off0000c3f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3F8 5200 bytes
SHA-256: dfe3fd9c7db801f152ee79e869c6a4323d01fb7b397b0041519b9f9e07729ac6
font_01_sfnt_off0000d587.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD587 10284 bytes
SHA-256: 71f9da7bdc74d0ffafe8606be2a73386afd8461199a9e19be13b528d4bf89228

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