Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cc701a2a5717902…

MALICIOUS

PDF

74.7 KB Created: 2020-11-13 17:28:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: f57cfdca985441ef2cd48ac3796f80e3 SHA-1: 9200ba6cec629d9d3405954c7772445dac2a970a SHA-256: 0cc701a2a5717902db17ee333566ee79ef3cd47a3ac38233c63cdc59d00bfe28
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 0.9997

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
  • 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/strik?utm_term=miss+moxxi%2527s+bad+touch In PDF document text
    • https://cdn-cms.f-static.net/uploads/4388428/normal_5f92f11ea2589.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371791/normal_5f93e0e20f881.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392661/normal_5f9d0f0ff126b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426260/normal_5fac459730514.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369308/normal_5f8a07b016ab1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393499/normal_5f9192203f749.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366319/normal_5f8b0b713d189.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366385/normal_5f909432877cd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/lorifumofelu/88314990055.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1df6a80c-53ff-4c4b-9eaf-acec5d456722/51146227773.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/juwusunufemositaxi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cf36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF36 5296 bytes
SHA-256: f62498730e065420e130f56629f85a5fbf49f8d4fc4c6d3f4802d0b02d4a2110
font_01_sfnt_off0000e125.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE125 12116 bytes
SHA-256: 6103424c5cb2244e87419b57403276fe15e2685f38f69ca539a1d0ac2ddec4bf
font_02_sfnt_off000108b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108B7 16132 bytes
SHA-256: 6820151f9a4816bccc9e85e605aef44ce22c8924dfcccd161584754f275bf028

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