Malicious PDF — malware analysis report

Static analysis result for SHA-256 69875ca0471bcb95…

MALICIOUS

PDF

179.3 KB Created: 2021-02-20 19:09:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: b6c21b613543462fa20b289660aa028f SHA-1: beed93c572b1e1634ac66622780deab6d3342be0 SHA-256: 69875ca0471bcb95dc58479472a9353e0229a98d61d6cd5207ad0ce865bb7a3e
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely intended to trick the user into visiting a malicious site. No scripts were extracted, but the presence of external URIs and the overall detection profile suggest a phishing attempt.

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://maypoin.ru/wix?keyword=lost+dimension+vita+trophy+guide PDF link annotation
    • http://vixurefivero.66ghz.com/55337254338.pdfIn PDF document text
    • http://gitikevajup.iblogger.org/levaza.pdfIn PDF document text
    • http://rowifir.22web.org/nenamafanop.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366661/normal_602e0cf1645c4.pdfIn PDF document text
    • https://cdn.sqhk.co/kinanekoxo/VihijLS/maxpreps_softball_rankings_colorado.pdfIn PDF document text
    • http://regivag.iblogger.org/35488173306.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470220/normal_602efddd50a4e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472793/normal_600c5214b42c6.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/retisovojor/lost_article_information_report_delhi.pdfIn PDF document text
    • https://s3.amazonaws.com/megodipewukitoj/national_dysphagia_diet_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/xixonu/wanevukazimujalulana.pdfIn PDF document text
    • https://s3.amazonaws.com/xajowu/risokolupatojusaz.pdfIn PDF document text
    • https://s3.amazonaws.com/fajeloninesitel/xagibe.pdfIn PDF document text
    • https://s3.amazonaws.com/kozibowisenatu/vumiba.pdfIn PDF document text
    • https://s3.amazonaws.com/befarekogol/sheep_heart_dissection_worksheet_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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00018b30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18B30 77900 bytes
SHA-256: d9c252fa167e0191a2ec3fa76bcb6d1f4077a867922e3fb761c79ecc78a3c72d
font_01_sfnt_off00027780.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x27780 5444 bytes
SHA-256: 589bdbcac021f5f04587e3226acde828d7f21bc19a7afd359bd479db480d0c4e
font_02_sfnt_off000289e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x289E8 16724 bytes
SHA-256: 31277bd0315990460bea53cb215e18a336fb331eb79d971632bcad14d3192c8a

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