Malicious PDF — malware analysis report

Static analysis result for SHA-256 710f142151120bd5…

MALICIOUS

PDF

85.7 KB Created: 2020-12-25 23:10:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 6e8faa437c517f64a929e50dadfa7e25 SHA-1: dacaf98bb84a0237c79f802ce07c90e9eaf8b466 SHA-256: 710f142151120bd53fbeefd3710f128216b71170689eec4d3798b90472ad712d
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://traffine.ru/123?utm_term=rare+earth+band+lead+singer'. The ML classifier also flagged this PDF with a high probability of being malicious. Although no scripts were extracted, the presence of a malicious URL strongly suggests a phishing or malware distribution attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://traffine.ru/123?utm_term=rare+earth+band+lead+singer In PDF document text
    • https://cdn-cms.f-static.net/uploads/4489732/normal_5fd3851b9256a.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/fupanabivote/bticino_classe_300x.pdfIn PDF document text
    • https://s3.amazonaws.com/gavapozalilup/kuvuwax.pdfIn PDF document text
    • https://s3.amazonaws.com/paropabaru/refuzosuzalujekidatuv.pdfIn PDF document text
    • https://s3.amazonaws.com/sabegokek/63375749177.pdfIn PDF document text
    • https://s3.amazonaws.com/tizowodifi/rowititavewazigobapekin.pdfIn PDF document text
    • https://s3.amazonaws.com/juvetaso/international_accounting_standards_1.pdfIn PDF document text
    • https://s3.amazonaws.com/sugosubexez/76992750004.pdfIn PDF document text
    • https://s3.amazonaws.com/fatikonavori/tujowutizulusinaz.pdfIn PDF document text
    • https://s3.amazonaws.com/tibanepoxilibud/vodoguxaruleromoz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9370c8c8-0ba0-4bcf-8dbe-1d24b6ea7522/tudibuwobaz.pdfIn PDF document text
    • https://s3.amazonaws.com/pukaridimupo/28166681655.pdfIn PDF document text
    • https://s3.amazonaws.com/megulu/acls_review_made_incredibly_easy_free.pdfIn PDF document text
    • https://s3.amazonaws.com/gulapore/propaganda_worksheet_answer_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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000112e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112E4 5236 bytes
SHA-256: 77c3becdefbcd9b623a34fa0ad0e5257bd75c50f0b47ff7d61211ab4e494f954
font_01_sfnt_off000124ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124AB 11112 bytes
SHA-256: b748ff8dd82ae0187740e464c7d69ef33461d53a3adc9ade4c4eb0f831bb8867

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