Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7034e1b8acb7f87…

MALICIOUS

PDF

76.8 KB Created: 2021-02-17 04:10:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 26bd981180c1c09f636142cac433666e SHA-1: bd9da0355f6b4d9ed91a9129f15e772114de1e1d SHA-256: f7034e1b8acb7f873fc12e33124ab7a8a4076c099fdf0c9d361d153d56dff1d7
96 Risk Score

Malware Insights

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

The file is a PDF document flagged by ClamAV as Pdf.Phishing.Trojan. It contains an embedded URL that leads to a suspicious domain, likely intended to redirect the user to a malicious site. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the presence of external URIs and the phishing detection suggest a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://bologen.ru/123?utm_term=think+of+me+meaning+in+hindi PDF link annotation
    • http://detonicro.website/maven_3.0_5_downloadae0yx.pdfIn PDF document text
    • http://cleanup-sale.site/95983074675vngh0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502870/normal_5fc68c7b1986c.pdfIn PDF document text
    • http://discout.online/vosajenakejamijutijozekajzcg70.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485001/normal_5ff3008814aaa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389355/normal_602731fa38cec.pdfIn PDF document text
    • http://f1l3download.site/tsx_quarterly_reporting_requirements8d99l.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366036/normal_5ff0c9ed9e73d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://nanisoz.epizy.com/ladidutanuj.pdfIn PDF document text
    • https://s3.amazonaws.com/remuv/24505971412.pdfIn PDF document text
    • https://s3.amazonaws.com/jodabiladezot/losogifivulusix.pdfIn PDF document text
    • https://s3.amazonaws.com/xufujofaleki/finding_inverses_algebraically_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/dusined/42384364495.pdfIn PDF document text
    • http://sepevelozexim.epizy.com/27819377383.pdfIn PDF document text
    • https://s3.amazonaws.com/polexebuj/ariane_5_flight_501_failure_report.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c62e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC62E 4736 bytes
SHA-256: 3f10653c0684b8658afa75afe05e8dccd5736e707c7eaf75257ce0c2722f8445
font_01_sfnt_off0000d608.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD608 11176 bytes
SHA-256: d0c6c07d1b8182f23b5e1241e173b6aad157d76af27536d9a0576cabc4e065e5
font_02_sfnt_off0000fc04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC04 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
font_03_sfnt_off00010a04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A04 8208 bytes
SHA-256: 63e7bb5c96ef2d06ca68e0b6d70e6f641fcb2c0f2f138927bed0d28e16da6f91

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