Malicious PDF — malware analysis report

Static analysis result for SHA-256 61a552ffa8d15ead…

MALICIOUS

PDF

77.5 KB Created: 2020-12-24 00:10:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 52c090466cf16a25d75f5ea0bab1c1f6 SHA-1: 11116b237ffefc910e5bcf367daa235c619a5df0 SHA-256: 61a552ffa8d15ead6a58fc44a30010fcf6abab2bc4e6882f96612dab178844c2
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://trafffi.ru/strik?utm_term=fm+radio+application+free+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4480408/normal_5faf9e792a9dc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392441/normal_5fd244ad57d2f.pdfIn PDF document text
    • https://cdn.sqhk.co/sekeniti/hbgigd4/fumanabuxemupofise.pdfIn PDF document text
    • https://botakukejase.weebly.com/uploads/1/3/4/6/134610266/zuvetuwuj_paziduvikob_pugufanej.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459055/normal_5fbc84d164ea4.pdfIn PDF document text
    • https://nimewoguvinu.weebly.com/uploads/1/3/4/4/134433183/xesurelem.pdfIn PDF document text
    • https://cdn.sqhk.co/ratijojitud/5jdYqZy/34730634490.pdfIn PDF document text
    • https://cdn.sqhk.co/parapirer/idjdkd4/xoxuwigapixefovuzula.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414339/normal_5f9e00d3d1ce8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500895/normal_5fd968a9bd243.pdfIn PDF document text
    • https://nibadaxolakawub.weebly.com/uploads/1/3/4/8/134882114/jurebazole_fiwemat_xotek.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/6fa050e5-3666-46be-b7e1-6e1832f1921b/lfs_s2_yamas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08db4c9c-3265-466b-826d-cb7ec2c19a6d/gogudiwarisab.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_off0000d760.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD760 5168 bytes
SHA-256: 959337bf5bcf5e8828e3dd72103ca4bb6d5a5f5bd9b6f85a92751888f28f0734
font_01_sfnt_off0000e8f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8F5 11792 bytes
SHA-256: 57b270a7582abbc7d02c2af55e5cc214edaf37aba0e0ca42d36d1e77aec0826f
font_02_sfnt_off00011155.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11155 17028 bytes
SHA-256: 1ab8207ae1c99df23142dc2c3974851b8da2cee56995b1d72fef3099e3645dba

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