Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d0d01ac5e7c716f…

MALICIOUS

PDF

74.0 KB Created: 2021-01-25 08:39:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 92b69a41f07052baf6134e4f7ccbfb1c SHA-1: 9287b41ab9b86539cdd142753ade96fc07a81062 SHA-256: 4d0d01ac5e7c716f60b765caff2e60c192f08dd78df01fa691f85f5abc6589c2
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a machine learning classifier and ClamAV, as malicious and phishing-related. It contains an embedded URL that directs users to a suspicious domain, likely to host a malicious payload or phishing page. The document body, though heavily obfuscated, appears to be a lure related to film songs.

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://trafffe.ru/aws?utm_term=karuppasamy+kuthagaikarar+film+songs PDF link annotation
    • https://cdn.sqhk.co/jibenapola/hebhjhh/tifajefuder.pdfIn PDF document text
    • https://cdn.sqhk.co/fabozesemi/pelhbgh/the_information_center_of_the_cell.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367290/normal_5fd8fba1ad176.pdfIn PDF document text
    • https://cdn.sqhk.co/ributexovek/ibgiWtG/are_basketball_courts_open_in_nj.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/penale/mawuxidugofofijesetinube.pdfIn PDF document text
    • https://s3.amazonaws.com/dukajevo/balanurezubejimafoke.pdfIn PDF document text
    • https://s3.amazonaws.com/lokijuronig/13245851369.pdfIn PDF document text
    • https://s3.amazonaws.com/nerugiraxura/43781988701.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/police_report_search_miami_dade.pdfIn PDF document text
    • https://s3.amazonaws.com/womirofop/avatar_tamil_movie_in_isaimini.pdfIn PDF document text
    • https://s3.amazonaws.com/sorogamat/tusovarimexepisedegib.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxepiduded/75386956229.pdfIn PDF document text
    • https://s3.amazonaws.com/sukobogixe/jonowodonawafopunojes.pdfIn PDF document text
    • https://s3.amazonaws.com/zufojadibi/relajixunedikofajap.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_off0000e443.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE443 5448 bytes
SHA-256: f54617083e4123d08442f61fbcdf26a428070b112da37b4cb9b8d6488966b0d4
font_01_sfnt_off0000f6b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6B0 10824 bytes
SHA-256: 4f1b7dda6949f2b4e6d6ee2bb6d30c442f2b2b650c812b81c35f533a2cd564bd