Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec77154b9984b51b…

MALICIOUS

PDF

75.6 KB Created: 2021-03-09 22:05:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 51de6dc183999db17a5c127c3b8647e1 SHA-1: 7f2b1f04c279178967a04e903e822a299e7cb942 SHA-256: ec77154b9984b51b714c040940cd90fcba1e6a1f75ac3dd97d29bbb95039b32e
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that redirects to a suspicious domain, likely as part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to malicious content.

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://maypoin.ru/strik?utm_term=what+country+is+50+shades+of+grey+on+netflix PDF link annotation
    • http://xorabawik.medianewsonline.com/54058736585.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393908/normal_5fe5280d606b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386335/normal_60361d6d57348.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4498842/normal_5ffe1de68c216.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413563/normal_6003effd1d567.pdfIn PDF document text
    • http://vvvvvvvvvvvvvvvvvvvvvb.xyz/xekinetip9lp2h.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375702/normal_600fca0cefd0b.pdfIn PDF document text
    • http://babysampler.com/jijerufokugowibupowidoze38go4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425255/normal_5fd5fa1d33229.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452852/normal_602f6096aead4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468843/normal_5fe02cac7e630.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4498997/normal_600be47726cb8.pdfIn PDF document text
    • http://reduslimitaly-ufficiale.site/sodofibi3fl07.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454678/normal_6003d14a049cb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485930/normal_5ff0ecb70e461.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458407/normal_603e9a6e0ae19.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402261/normal_5ff9fcbb6448c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kulebosux.myartsonline.com/house_on_mango_street_soundtrack_project.pdfIn PDF document text
    • http://vebusatoro.atwebpages.com/29654010092.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_off0000e843.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE843 5732 bytes
SHA-256: 7619708b160060a06ec6d8af821b54eb3a738fdaf2e582f9c3ea73c7c81877f0
font_01_sfnt_off0000fbe1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBE1 10864 bytes
SHA-256: 88052e2d25c36beb30ad573083671ca38d6a5e78e51c4dc60ae4443cb755c495

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