Malicious PDF — malware analysis report

Static analysis result for SHA-256 992285ea415f9a71…

MALICIOUS

PDF

77.6 KB Created: 2021-01-25 17:41:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: a3b91211440f9fe4da7412847f39f3d4 SHA-1: ad376e5ec5b95bc72ad22a2274b784c7d1f7e403 SHA-256: 992285ea415f9a71dcc3624ad4875eec02dc4a4052e81ce292b20f475c8ba6fc
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that directs to a domain known for hosting malicious content, flagged by ClamAV as Pdf.Phishing.Trojan. The document body, though heavily obfuscated, suggests a lure related to a book title, which is a common tactic for phishing or malware distribution. The presence of an external URI firing further supports the malicious intent of directing users to a potentially harmful external resource.

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://seumenha.ru/aws?utm_term=el+tulipan+negro+alejandro+dumas+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4475209/normal_5feb45e3406b4.pdfIn PDF document text
    • http://violet-cinema.ru/offroad_bike_driving_simulatorygpkk.pdfIn PDF document text
    • http://sazaleve.22web.org/jurnal_dermatitis_atopik.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476782/normal_5ffbcf820c4dd.pdfIn PDF document text
    • https://cdn.sqhk.co/volakase/j3gghh2/loop_yarn_philadelphia_blog.pdfIn PDF document text
    • http://swiss-family.space/badugaperinumomonagogosbb5l.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373769/normal_60087c9bd0396.pdfIn PDF document text
    • http://kuvuradivikosef.iblogger.org/domiz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373239/normal_5fdc4be2f1a81.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406771/normal_6000f3e5c883b.pdfIn PDF document text
    • https://cdn.sqhk.co/wanevakaxuma/djcjhfu/98281980506.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491450/normal_5ff2d536afd0c.pdfIn PDF document text
    • http://trenketo.buzz/amaze_meaning_sa_tagalogc8xo5.pdfIn PDF document text
    • https://cdn.sqhk.co/futevanu/gdhbjil/26246742206.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://xaligapuk.epizy.com/16556215253.pdfIn PDF document text
    • https://s3.amazonaws.com/gogonof/report_writing_activities_for_esl_students.pdfIn PDF document text
    • https://s3.amazonaws.com/jigezilor/vonodeti.pdfIn PDF document text
    • http://memajale.epizy.com/biraxomowaj.pdfIn PDF document text
    • https://s3.amazonaws.com/zalomi/hamalach_hagoel_sheet_music.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_off0000e4d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4D9 5276 bytes
SHA-256: fe425fae2b009c8da660c7f050643e18b00f655377d17e4f43c5875ec26a0e02
font_01_sfnt_off0000f6b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6B5 10524 bytes
SHA-256: df9a5af02116545fc8da64014e7bb0c4abd444dae85d722d761ab02baefb6fa8
font_02_sfnt_off00011ad2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AD2 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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