Malicious PDF — malware analysis report

Static analysis result for SHA-256 51b551722cc50776…

MALICIOUS

PDF

78.9 KB Created: 2021-01-03 03:36:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: effc54ec414e6e68e6fe2f083158a9c6 SHA-1: 9374c4cb3c6612a7046fd7a7e66e366df90157ec SHA-256: 51b551722cc50776afdb11a508c4876cc7974a007b2b044b95000523c12f95e3
96 Risk Score

Malware Insights

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

The PDF file contains a heuristic indicating an external URI, which points to a suspicious domain. The ML classifier and ClamAV detection strongly suggest malicious intent. The document body, though heavily obfuscated, contains text fragments that, combined with the URL, suggest a phishing lure for movie downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://traffking.ru/aws?utm_term=tamilgun+hd+movies++2019+isaimini PDF link annotation
    • https://cdn.sqhk.co/vagekoxes/6mhEgde/fabagidegi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366343/normal_5f9214deaeb90.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389604/normal_5fcf15dac33e9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://s3.amazonaws.com/petuzutemixuvod/hardy_weinberg_problem_set_answer_key_mice.pdfIn PDF document text
    • https://s3.amazonaws.com/fasomusogapovi/ssd_4_mod_4_exam_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/semuxemakaw/30947466062.pdfIn PDF document text
    • https://s3.amazonaws.com/xezonijida/61373305318.pdfIn PDF document text
    • https://s3.amazonaws.com/tawovojo/96872983106.pdfIn PDF document text
    • https://s3.amazonaws.com/lanaladu/antibiotic_sensitivity_testing_methods.pdfIn PDF document text
    • https://s3.amazonaws.com/kiwopusafize/2873541558.pdfIn PDF document text
    • https://s3.amazonaws.com/nabifovu/34607659604.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d0ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0EE 5436 bytes
SHA-256: 31b78e7724c69fcc315c37fca6f52a5d6909fda0b1403eab6d2cdfbf4451a4ef
font_01_sfnt_off0000e337.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE337 10324 bytes
SHA-256: 26d3d3dc6c3226f5091e4534b9e95edcf61fc9b4fe5fd35463470044b1ee2803
font_02_sfnt_off000106aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106AA 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
font_03_sfnt_off000114aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114AA 7640 bytes
SHA-256: 56af479f64cede56cd042d922aa344ce699b98d309961fe56b541adaf23b58e8