Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a1656d515328b3f…

MALICIOUS

PDF

72.9 KB Created: 2020-11-13 08:20:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: e0a7069ff42a79184c3f16072803958f SHA-1: 1277a616cb212ea1984494941b15f89b420946fa SHA-256: 9a1656d515328b3f5fd086c09bb7cb8215918966ca9038f41dd12f9162abdc99
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://traffking.ru/aws?utm_term=new+assamese+whatsapp+video PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4420761/normal_5fa07eb17d908.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404524/normal_5f9fb1050ae6b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378852/normal_5f9f58e276eba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374196/normal_5f8cfea39c39a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485809/normal_5fa9c855a814f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369328/normal_5f9cee3baf06c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378605/normal_5fa4c5981e45a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365998/normal_5f86fed5b3038.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453338/normal_5fa2e5a4489cc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481158/normal_5fa8af8e23437.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414486/normal_5f9be70e2fab1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377112/normal_5f93e38089849.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393022/normal_5f9d6fb516bce.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://s3.amazonaws.com/gogonof/6593609574.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/54f85cf6-8650-45ed-a319-f76289d67b4c/college_algebra_julie_miller_2nd_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/tulosa/38953458444.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000aef8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAEF8 5192 bytes
SHA-256: 0a5f991a6ae7d737f08c6bb8ad2e4a567dfb9b50b8dead552c64451010f1fcf4
font_01_sfnt_off0000c095.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC095 4364 bytes
SHA-256: 92a106827bb626e82eb208b506b5beb2e39729a7f551d425d1b632fb81f73b97
font_02_sfnt_off0000d041.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD041 9696 bytes
SHA-256: d906992e41d071d6bceca03369ef8c40aac593a3c9869f1686deec3bb40ac149
font_03_sfnt_off0000f13d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF13D 16168 bytes
SHA-256: e5458d7b6d82539349b17fc4713a17e1381d471255c72d9f8116b7c86e08c443
font_04_sfnt_off0001067e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1067E 3948 bytes
SHA-256: 682b3a1af7a83451610735b15ae07676c10f50b38b389c74709823d7a579d9e9

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