Malicious PDF — malware analysis report

Static analysis result for SHA-256 957f713d399259de…

MALICIOUS

PDF

69.6 KB Created: 2021-05-22 22:50:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: d3e5d7c89bb918b45782a75b88637bd1 SHA-1: ee7df1a352484cba725d5b66fdfa63a6bd8b8709 SHA-256: 957f713d399259de69bf7524796e29c0820c87f018a161a45b44692df6ae9344
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The document body, though heavily obfuscated, appears to be a lure related to programming a remote control, likely to trick users into visiting the malicious URL. No scripts were extracted, but the presence of an external URI and the ML classifier's high confidence indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://gimoguvi.ru/strik?utm_term=how+to+program+harmony+300+remote PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4403819/normal_601cc91f37fa9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457868/normal_604629957ccee.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408479/normal_5ffb5a58f103f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497358/normal_5fdd3f0689a46.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465131/normal_60035980e0a3f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485926/normal_600f076c9a28f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393647/normal_60219c69ce5d1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482424/normal_6013c9be5b3e6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454995/normal_5fc78ec618d14.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482629/normal_5fee3de6f29d2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495257/normal_5ff005c337bca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376850/normal_5fd0e60a397f2.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/gofiguj/74146425455.pdfIn PDF document text
    • https://s3.amazonaws.com/lemerisinivum/oz_season_1_free_stream.pdfIn PDF document text
    • https://s3.amazonaws.com/nimuwet/pikulejusotalitoluwodofa.pdfIn PDF document text
    • https://s3.amazonaws.com/jemisajoda/invitations_for_70th_birthday_party_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/jojitagifuva/82361508649.pdfIn PDF document text
    • https://s3.amazonaws.com/zubata/twelve_apostolic_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/wikurixobelu/22946985602.pdfIn PDF document text
    • https://s3.amazonaws.com/xepululejiwof/70684326324.pdfIn PDF document text
    • https://s3.amazonaws.com/nokiva/8933611333.pdfIn PDF document text
    • https://s3.amazonaws.com/ronatiduzoxij/jegedorusikizivapili.pdfIn PDF document text
    • https://s3.amazonaws.com/xewamejixolefaj/17524320354.pdfIn PDF document text
    • https://s3.amazonaws.com/nokiva/sql_query_interview_questions_and_answers.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d22e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD22E 5484 bytes
SHA-256: e3a6dae8ea75398b7419e0ce813d50ce7b6302c1d93e04f392eeda37485c16b4
font_01_sfnt_off0000e4c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4C8 10560 bytes
SHA-256: 3dc890181ddf24139d26bb8f39f3b1dd6c36402b9ef33531c0d408b55661c754

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