Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d94fd452436f59e…

MALICIOUS

PDF

75.7 KB Created: 2021-02-15 09:52:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: db0a516ab58ee78c152f870bb27aa578 SHA-1: 010b5850efe596c26de85d1ecb3d311de4918c0f SHA-256: 3d94fd452436f59ea9a187b9c8d5e27f12230c5a74f421be1bfa856232ced47c
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded external URI pointing to a suspicious domain. ClamAV and ML classifiers have identified this file as malicious, specifically a phishing trojan. The presence of multiple embedded URLs suggests an attempt to redirect the user to malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=audiopipe+apmi-2000+amp PDF link annotation
    • http://iqecoportal.ru/el_libro_sin_palabrasr8zx1.pdfIn PDF document text
    • http://7evenrp.ru/tidarixelovulu2t0g3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374203/normal_5ff1b78366c66.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410006/normal_5fe70ab7eff35.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417419/normal_5ff93226a3086.pdfIn PDF document text
    • https://cdn.sqhk.co/vumuwilaj/fZThbfG/nobavutanudoduxibemig.pdfIn PDF document text
    • http://bigswinner.space/long_and_short_adjectives_exercisestj20u.pdfIn PDF document text
    • http://ital-girl.space/49446819926lccwd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392453/normal_5ff7bea822aa2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420438/normal_6007a550c4bde.pdfIn PDF document text
    • http://vefefex.iblogger.org/kezibamebofipu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365636/normal_60065cb327f51.pdfIn PDF document text
    • http://pujugekan.iblogger.org/nutorigo.pdfIn PDF document text
    • http://jefigesawek.iblogger.org/aristoteles_la_politica.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489255/normal_6016e097481a1.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://fulapokop.epizy.com/50389680236.pdfIn PDF document text
    • http://sadisuden.epizy.com/brother_birthday_wishes_status.pdfIn PDF document text
    • http://tefabonapo.rf.gd/85888247388.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_off0000debf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEBF 4792 bytes
SHA-256: 38bbfad3c847ce3aed7ce66050952f02f8c0bd2256558679ff44325b03dcbe07
font_01_sfnt_off0000ef12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF12 10748 bytes
SHA-256: 770746c605667650d5ab0d13f864d025da430c12cb61803ca92c75e533f514a0
font_02_sfnt_off000113a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113A3 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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