Malicious PDF — malware analysis report

Static analysis result for SHA-256 e102be3b1efee036…

MALICIOUS

PDF

81.0 KB Created: 2021-02-07 20:35:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 272e0200ad05974d465ff22e324005b4 SHA-1: 956a8ba0a9b156274b9bc3b0a05e6c6f00f4d599 SHA-256: e102be3b1efee0364c631539cf011106d8bb7ccfa34771953e58118f82e7fac5
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is a strong indicator of a phishing or malware delivery attempt. The ML classifier and ClamAV detection further support the malicious nature of this file. Although no scripts were explicitly extracted, the presence of embedded URLs and the overall detection by security tools suggest an intent to redirect the user to a malicious site.

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/aws?utm_term=witcher+3+blood+and+wine+riddle+answer PDF link annotation
    • https://sorafenime.weebly.com/uploads/1/3/4/3/134320910/6475237.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382629/normal_600636532f030.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416331/normal_60017a8a5e483.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406775/normal_5feb1340116f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420454/normal_5fd994c18d6e7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412391/normal_601ec6d6e1c20.pdfIn PDF document text
    • http://ing-jobs-opportunities.com/lucky_block_minecraft_ps4r39h1.pdfIn PDF document text
    • http://arenda-comp.space/43000934001ns1jv.pdfIn PDF document text
    • http://uchebnoe.website/nugenevufibupudimezi4mqkz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402932/normal_5fdd14095f88d.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/zumomasugipeno/enchanting_wow_bfa_guide.pdfIn PDF document text
    • http://mibobugaf.rf.gd/80326928270.pdfIn PDF document text
    • https://s3.amazonaws.com/tufujifinobiro/8904305900.pdfIn PDF document text
    • http://linakagiwabofa.epizy.com/mystatlab_homework_answers_2019.pdfIn PDF document text
    • http://fukefuxatolu.epizy.com/bmw_320i_m_performance_2015.pdfIn PDF document text
    • http://tudutov.rf.gd/silugelexapejada.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_off0000fed4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFED4 5436 bytes
SHA-256: a7a70adeec889b8bc66c2d4a560e8173fe3a87f86504436747af738fe54f2d57
font_01_sfnt_off0001115e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1115E 11196 bytes
SHA-256: 871ef186718ae959e898a151305b5c3ae48d5dbd01da6d51ac558a7075846baf

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