Malicious PDF — malware analysis report

Static analysis result for SHA-256 37d715cf6449f3ec…

MALICIOUS

PDF

75.9 KB Created: 2020-12-05 11:20:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 9c513c00acb5fc3e753d656e9f9db4ba SHA-1: 96443f11794cb045ff778d789ee117c63c00f9ca SHA-256: 37d715cf6449f3ec398612f019a1f625e1fb33e78197ef405a4a13191d2de796
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 0.9996

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=download+cinema+box+apk+for+android PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4373008/normal_5f960cb5ea5a0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401519/normal_5fc4450ad44c5.pdfIn PDF document text
    • https://fizepuxani.weebly.com/uploads/1/3/4/5/134585658/gewogomo.pdfIn PDF document text
    • https://nurekagenarufab.weebly.com/uploads/1/3/1/6/131636906/731f143c15e80.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464525/normal_5fa5e9b3dcaaa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387929/normal_5fb03e3ea90de.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420431/normal_5fc69549b096f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367916/normal_5f89573b9f82e.pdfIn PDF document text
    • https://babotiditufo.weebly.com/uploads/1/3/4/6/134694550/noparurafokini.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479938/normal_5fc35f9d38afc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444351/normal_5fc4542bb2605.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/bebbf2db-acb6-4400-878d-04a08d0e3f3c/tutatufawetakitu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0dfe77d0c8f249d40ab54/t/5fcaecc00814be4f73df6cbe/1607134401110/21529808191.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d46c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD46C 5192 bytes
SHA-256: 341af5f871f01dcb8569be399fa739bdfc535f1ee615fa1d3b0e2338d5e0ea87
font_01_sfnt_off0000e5ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5FF 1800 bytes
SHA-256: 51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0
font_02_sfnt_off0000ee8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE8D 10916 bytes
SHA-256: 8b921ae8748174e1e2502b97006d2f4f58f04da89edc11c555b36cafc8ca0f49
font_03_sfnt_off000113cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113CB 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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