Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ca5cfd5b8a33a0b…

MALICIOUS

PDF

68.6 KB Created: 2021-01-23 21:00:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: bbfdb66494ebe7e69c98d480bbc7987b SHA-1: af8ac2aa3225c716495196dbeb794c78dcb68561 SHA-256: 7ca5cfd5b8a33a0bd197c05080eac6173d3cd46e68977e05a220b278f76a8809
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, potentially for credential harvesting or further payload delivery.

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://trafftec.ru/wb?keyword=running%20on%20empty%20jonice%20webb%20amazon PDF link annotation
    • https://site-1220854.mozfiles.com/files/1220854/jirawinixonedopuzereve.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376609/normal_6005f0f570bb5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386361/normal_600303235f5bf.pdfIn PDF document text
    • https://site-1195605.mozfiles.com/files/1195605/degumasunofofif.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391335/normal_5fee31d26ec71.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368238/normal_5fe8751c93cd9.pdfIn PDF document text
    • https://site-1246781.mozfiles.com/files/1246781/avast_antivirus_pour_smartphone_android.pdfIn PDF document text
    • https://site-1172895.mozfiles.com/files/1172895/pay_paye_online_login.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/wujixus/97813070055.pdfIn PDF document text
    • https://s3.amazonaws.com/fefurorobumi/eleanor_rigby_sheet_music_free.pdfIn PDF document text
    • https://s3.amazonaws.com/vinivuxo/cutting_diet_plan_india.pdfIn PDF document text
    • https://s3.amazonaws.com/luropiw/simbologia_automatismos_electricos.pdfIn PDF document text
    • https://s3.amazonaws.com/jajoxulabojaso/maxutazosagex.pdfIn PDF document text
    • https://s3.amazonaws.com/supefujoxopubu/49412204729.pdfIn PDF document text
    • https://s3.amazonaws.com/niwotipugonuvoz/21479638723.pdfIn PDF document text
    • https://s3.amazonaws.com/mizeteb/58691907970.pdfIn PDF document text
    • http://kibulirol.rf.gd/the_new_guy_imdb_parents_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/resixexi/feponakirusesatuzixamabo.pdfIn PDF document text
    • https://s3.amazonaws.com/furunumaroxun/nemamejulufokol.pdfIn PDF document text
    • https://s3.amazonaws.com/fusopoxipo/format_code_in_webstorm_mac.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
    • https://vogueweb.blogspot.com/server4.php?asin=168350In 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_off0000cc28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC28 5416 bytes
SHA-256: f5cc05954677d55742274f54653c96722bb864c615d6cd22020844fdc51bada6
font_01_sfnt_off0000deb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEB3 11184 bytes
SHA-256: eccae41326c147cae30536b545cd587799b5d30185ddf96baac7f9cc6be4c449

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