Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf808e0e43d08377…

MALICIOUS

PDF

71.1 KB Created: 2020-11-20 11:10:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: e4824f04d548243aee5a2018d5c349e3 SHA-1: bda56bd02a86d813053bc54698dd0869f4ce99e4 SHA-256: bf808e0e43d0837716ac47f3f86d32dcd1351c47392ac2f87bf220e859c829e9
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://traffnew.ru/123?utm_term=axle+bearing+puller+canadian+tire PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4391925/normal_5f91ec9317e1a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380088/normal_5f8b1367505c5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367903/normal_5fab0a7b76395.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374979/normal_5f8c0d5f465db.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481052/normal_5fb65e427cf8c.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/55c07d60-ef16-4711-aa90-ad77b4ca09c4/gukekatibodumipu.pdfIn PDF document text
    • https://s3.amazonaws.com/tesasubawalozan/castle_of_wizardry.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3c2e8f0-d950-4fb2-add1-2bae4d1659ec/89861932977.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7236383c-fa29-4786-9f9e-b159a2d07a8c/what_is_us_indicia_fatca.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5c50030-816d-4bea-a655-a8482b841f6f/39181264741.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6eb0824-4098-4c60-9081-4f6e68b25b37/introduction_to_the_theory_of_aeroel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc2fc082-f784-478c-962b-5f21ff2de68b/sodosuj.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzaganog/gigezobiv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5034688b-f989-463e-b5ab-3dc622225bd8/sokofinisofimu.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_off0000d703.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD703 5260 bytes
SHA-256: 783717e4bd3b0b18c579b7efde4623b92009ec82642318929fba19aeba8a2644
font_01_sfnt_off0000e8f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8F2 11252 bytes
SHA-256: 098f990250a8bf89c5c447ab643c6a98b1b0f21bd7b7cc16c92f88d292b9c36f

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