Malicious PDF — malware analysis report

Static analysis result for SHA-256 18a4a264161ca1bf…

MALICIOUS

PDF

70.3 KB Created: 2021-01-10 17:48:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 4859c5939420c872e78c22badbf59274 SHA-1: 33d250740902167fa775cb1832964321053a7869 SHA-256: 18a4a264161ca1bf064b8975fcd08304d1d8dbff9f378d90a115cb3d82fcf069
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9997

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://trafftec.ru/aws?utm_term=kayle+guide+urf PDF link annotation
    • https://cdn.sqhk.co/tufuboloruj/haOxvji/go_karts_for_sale.pdfIn PDF document text
    • https://site-1177392.mozfiles.com/files/1177392/granny_simulator_game_free_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493891/normal_5ff3b5a0c9e6c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420767/normal_5fcc454ff350a.pdfIn PDF document text
    • https://site-1168276.mozfiles.com/files/1168276/pictures_1_month_old_babies.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4394060/normal_5f96fbbe73670.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477401/normal_5fa82e072ff33.pdfIn PDF document text
    • https://cdn.sqhk.co/pupevadojas/gix3heC/57582779266.pdfIn PDF document text
    • https://cdn.sqhk.co/xakelafu/wRhfqjc/one_more_line.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490724/normal_5fc3dab906098.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/bizamesuwepe/lorilixidugugifos.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_off0000d582.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD582 4968 bytes
SHA-256: 4543e2af5306694a6deb82dfd7d1ea518e2f245a9840e4a00f46fdda4ecd3328
font_01_sfnt_off0000e68c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE68C 12012 bytes
SHA-256: 298935429df5c1edd85a0c7b20bccb8f6aefa3621f60fc1ba4645c1676f24610

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