Malicious PDF — malware analysis report

Static analysis result for SHA-256 7576e356ce4c3199…

MALICIOUS

PDF

87.4 KB Created: 2021-01-08 13:43:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: d6fd0f659a8a667e85b9b0407d687f21 SHA-1: ee33067b43a206ecad59405e5f6df2e120181843 SHA-256: 7576e356ce4c31993c10e752453a01abf9df45a520337ada0c3f9c48284ac36a
104 Risk Score

Malware Insights

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

The file is a PDF document flagged by ClamAV as Pdf.Phishing.Trojan and ML classifiers. It contains an embedded URL pointing to 'https://trafftec.ru/aws?utm_term=cccam+2.+1+4+ipk++openatv', which is likely part of a phishing or malware distribution scheme. The presence of a 'download button' heuristic further supports the intent to trick the user into downloading malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/aws?utm_term=cccam+2.+1+4+ipk++openatv PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4459341/normal_5fce568829002.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377400/normal_5fc9076aa3342.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/zinudipir/22204768671.pdfIn PDF document text
    • https://s3.amazonaws.com/foneniz/20219236499.pdfIn PDF document text
    • https://s3.amazonaws.com/tulosa/26122495154.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be0c5dd9-1002-4271-806a-27d1aefb4a71/determinant_of_3x3_matrix_calculator.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a64d9111-0215-4d83-aa31-ca8cce6361f5/wilejevizefisixa.pdfIn PDF document text
    • https://s3.amazonaws.com/rezugekolaba/wedding_invitation_envelope_print_templates.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0a5a7bb-61c1-43c9-9866-0c3794f747f5/xamizanupiborujetezobop.pdfIn PDF document text
    • https://s3.amazonaws.com/tiduro/american_symphony_orchestra_auditions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63b28eea-9825-4b5f-b0f3-17e2f6ec4730/stephen_king_short_stories_online.pdfIn PDF document text
    • https://s3.amazonaws.com/zomuzigo/excel_bedingte_formatierung_zeile_kopieren.pdfIn PDF document text
    • https://s3.amazonaws.com/jedobufudajewu/haupe_duke_ellington_sheet_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0fea1d05-7dc6-4ac2-a733-d2eb51d608c2/chief_keef_age_16.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010ba8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BA8 3668 bytes
SHA-256: 9c5ba4ca3f2563d165dc5fdfccd373b83baa657fbfa49094a777c55c7882cc6c
font_01_sfnt_off000118c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118C9 5104 bytes
SHA-256: 9a532cee47134e85e0df621b6e6db00c278a2acc2a932b1b11b2b8d5a5910b5b
font_02_sfnt_off00012a37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A37 11384 bytes
SHA-256: 8ef5dcacc68adce5fea8e0b5662411f504b071429c96a2ef6ca9b1025f073e76

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