Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b0818666d236658…

MALICIOUS

PDF

70.9 KB Created: 2021-02-11 01:50:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 1f2679b816dec5c3037c4d943d9cb656 SHA-1: 03fc0c42ef1832129760cb3dcfccb8a9664c810e SHA-256: 1b0818666d23665850e1914a0d68a08fec62c2241722702711b2d707bd805058
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 0.9998

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
  • 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://jacksth.ru/123?utm_term=the+girl+who+owned+a+city+pdf PDF link annotation
    • https://cdn.sqhk.co/leredupodeka/qjeSFu8/bubup.pdfIn PDF document text
    • https://cdn.sqhk.co/zogobadakedu/lHUyiij/86542436157.pdfIn PDF document text
    • https://cdn.sqhk.co/zapiseniw/GUPKhcy/xufitiferonavutet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381962/normal_5fd7c79773c6e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408330/normal_5fefe795172a0.pdfIn PDF document text
    • https://cdn.sqhk.co/zujubiviv/whcPej9/kavezumuduziluv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378848/normal_5fcf4a5672efc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480145/normal_601100c573a1f.pdfIn PDF document text
    • https://cdn.sqhk.co/lolatonuvesa/wjggdhe/buttercream_frosting_wedding_cake_ideas.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/bejikefowu/daviwisixexev.pdfIn PDF document text
    • https://s3.amazonaws.com/pusori/rpg_games_for_pc_offline.pdfIn PDF document text
    • http://nudumen.rf.gd/81381711789.pdfIn PDF document text
    • https://s3.amazonaws.com/polojuliragam/48145577878.pdfIn PDF document text
    • http://bovifuxabobi.epizy.com/template_for_leave_application_letter.pdfIn PDF document text
    • https://s3.amazonaws.com/polexebuj/24201928831.pdfIn PDF document text
    • http://gekavitominugi.epizy.com/9712334029.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_off0000d8a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8A1 5380 bytes
SHA-256: aa96dd04966417883cac982ee2deb29910e68953decf51fdf5fc7bac5ef5d65d
font_01_sfnt_off0000eb05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB05 10516 bytes
SHA-256: f1ffb9982f34eb17c35ce58edfa0f8cd783dd48d54e38bbc69730d22233193cd