Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5482c4d9bcb05ae…

MALICIOUS

PDF

76.7 KB Created: 2021-03-16 06:18:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 6a8ba378693398f5c2bcf312c497407e SHA-1: b98ece5968164278ba4059cf61c3b2b6e15f44b7 SHA-256: b5482c4d9bcb05ae4a7d5a0aed2a6b83f03fe38ee8f3257370e81e294fe23a4c
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 0.9999

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://golowaki.ru/strik?utm_term=progressive+guitar+method+for+young+beginners+book+2 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4464996/normal_60088f9b4797f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476938/normal_5fd1e1c2479a0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413363/normal_5fc5aa7a8eed6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411500/normal_5fcf5d046dddf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493610/normal_603b32469bdd9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413225/normal_6030fa710ac57.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366317/normal_60028fc8a3ded.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484624/normal_603efcb6381e9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454172/normal_5fdd0a6ff0dcb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492281/normal_5ff22114e6a5c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406812/normal_5fd7f984e2a74.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465136/normal_5fec8fd40a36b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419218/normal_60500fcb59b27.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/7615d734-48d7-4cbf-9935-f54c721e7ef5/99561887441.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e60c3e88-7a48-43e3-bbec-221f234f682c/ca_form_568_booklet_2015.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dce5e5c2-861f-4561-80aa-66e0b77b72cd/biblical_hermeneutics_five_views.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a46ff4ea-2f39-4305-8771-6d2e0796f9f5/what_is_the_white_stuff_on_christmas_trees.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3d705c0-9e0b-4b89-82e2-92c771085f9c/83181720162.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_off0000eb62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB62 5788 bytes
SHA-256: 01b0432f5a050879c1834eae2927c3beb5cb6457d8266d610242232362ddd873
font_01_sfnt_off0000ff04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF04 11240 bytes
SHA-256: 7f5959ec331a6828d593fdf58f8c9a21424cb14f3076db73c5a2b0c7108a7ca6

Open this report in the interactive analyzer, or submit your own file for analysis.