Malicious PDF — malware analysis report

Static analysis result for SHA-256 046220138cbc8fa9…

MALICIOUS

PDF

65.0 KB Created: 2020-11-20 09:39:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 810dc2dbdca25f81dc7e1806d2370428 SHA-1: dcfcc85a45fdb3aace7d2843ea9171257af2d9fd SHA-256: 046220138cbc8fa9841e5bcaf51b60de2b80287a3d1b7b0f289d26412a7f4a73
96 Risk Score

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 0.9995

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/123?utm_term=sample+and+population+math+worksheets PDF link annotation
    • https://togitarusufojir.weebly.com/uploads/1/3/2/6/132681229/a2f29a.pdfIn PDF document text
    • https://xosotujusosevo.weebly.com/uploads/1/3/4/3/134377620/wesuxezowugatu_jotorenarif_vamedire_fodixeb.pdfIn PDF document text
    • https://lesavudipuvu.weebly.com/uploads/1/3/4/3/134338744/nerobor_paxojiwivog_palugodatelumud.pdfIn PDF document text
    • https://larulukesulugu.weebly.com/uploads/1/3/4/3/134305666/senufivifirajifi.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/paropabaru/81379709471.pdfIn PDF document text
    • https://s3.amazonaws.com/kugufitel/chris_gardner_jackie_medina.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawexawinogad/gugesizebupixiresede.pdfIn PDF document text
    • https://s3.amazonaws.com/kasuwevovog/58420112635.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0dd51f8-f6fd-4e56-b8f8-3ac15b013474/paguwovaf.pdfIn PDF document text
    • https://s3.amazonaws.com/gozilum/lord_of_the_flies_test_w_key.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_off0000ad2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD2A 5460 bytes
SHA-256: fb82fd6c8e025d1e476aa0b39aca01ae59e3eb459f68979abf9942f1b5fd5ea9
font_01_sfnt_off0000bf98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF98 10144 bytes
SHA-256: e940f6cf98b49bdb426a74d46e85b94248e22ff05be5a96f61342f58aa99ac13
font_02_sfnt_off0000e1ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1AE 16092 bytes
SHA-256: 39b2f4b99ee08965fd4836f89f628a00cde8346cb181131bba0308e80db8fb67