Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a7af0a75ad9f82e…

MALICIOUS

PDF

66.6 KB Created: 2020-12-20 18:39:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 279528d4ad1a0515590d0a07417bf4c1 SHA-1: 8310f84384e18b80762b1267aba5b315e53d6757 SHA-256: 4a7af0a75ad9f82e025521821d1a2a27271b0ca14f5bd1fb5c7ba0c6f7c16ce0
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL, 'https://trafficel.ru/strik?utm_term=i+can%2527t+make+you+love+me+lyrics+dave', is likely used to redirect the user to a phishing site or download a secondary payload. The document body, though heavily obfuscated, contains text related to song lyrics, suggesting a social engineering lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafficel.ru/strik?utm_term=i+can%2527t+make+you+love+me+lyrics+dave PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4409396/normal_5fcb16b292a70.pdfIn PDF document text
    • https://sumozizadux.weebly.com/uploads/1/3/4/2/134266097/kadoji.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369629/normal_5f890bf4989af.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381964/normal_5f96982788945.pdfIn PDF document text
    • https://mewifukemi.weebly.com/uploads/1/3/4/7/134764424/1154ba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393751/normal_5f9ae4908e16f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471711/normal_5fdeda3b704fe.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/e7f4e111-d225-49dd-b406-7f83bda460c9/turbinas_et_compresores_jetsxoel_sla.pdfIn PDF document text
    • https://s3.amazonaws.com/fejatepudopito/matthieu_ricard_altruism.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29573c26-beaf-4622-9d58-5319884d9900/present_participle_worksheets_4th_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/xajowu/potetogav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02dd022b-daee-45cb-b526-a8fa76641c4d/13409255039.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_off0000c8a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8A2 5280 bytes
SHA-256: 2d24c85aab5981dab1f35b23d25957e1ebe45c1e3477759c84d4e60eb6c6dd25
font_01_sfnt_off0000da99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA99 10344 bytes
SHA-256: b12c2b5d14381ca1b96cd0490b36e7ddb2d9e98eb02cfc59d40155801e5c7c09