Malicious PDF — malware analysis report

Static analysis result for SHA-256 29ae50cb34c3ca61…

MALICIOUS

PDF

73.7 KB Created: 2021-06-01 13:09:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: d3df66e48573313907871082d25c46d1 SHA-1: 0665f5ab405a24492be5d50b03552d607f8c9b0f SHA-256: 29ae50cb34c3ca612049fdb046e343994bdd51e7cf20ad3dc32495ba591d6684
104 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. The document body, though heavily obfuscated, contains text suggesting a 'pop quiz word template' and the presence of urgency lures. An external URI, https://pixomot.ru/pbw?utm_term=pop+quiz+word+template, was extracted, which is likely the destination for the phishing attempt or malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://pixomot.ru/pbw?utm_term=pop+quiz+word+template PDF link annotation
    • https://static.s123-cdn-static-d.com/uploads/4404107/normal_60b0477c60937.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4428045/normal_60083f3e5db90.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481154/normal_6058be3615d02.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475586/normal_60208d1f4f898.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/dfd796bd-5708-466c-aa47-d7d70c00be99/27080876231.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee87fb0a-a966-4cd5-a890-8f996cb9d858/desapapagenisakiw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0af5c46f-d291-456c-b4a3-57bffede2ba4/how_to_connect_toyota_corolla_clarion_bluetooth.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9e9fd9b-7e8f-4202-8111-1f6f7d567a7f/butterball_indoor_turkey_fryer_parts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4eed7646-8e7f-415d-9c0c-6588023045f2/sifobexosadapa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3c83cc4-719e-4d45-a4b9-9f4f82788518/samsung_galaxy_s9_edge_price_in_pakistan_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4b5c8c7-fb1c-4ac7-a902-4ff0baff7908/kuwuwurojulikanoguxukiva.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/15a4cc6f-2716-42eb-a865-f9317de90df8/prentice_hall_algebra_1_extra_practice_chapter_1_answer_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3ada37b-bd16-492f-a25f-78ecdfa21f34/55816681006.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6af26d3e-6723-41e6-b63e-d3cb48f01b63/84867458353.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d3a979f-bf0d-4634-839e-39c27b69735c/jumulotikugigur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7705ab58-29f8-4d16-8bf9-7a62cd3f9c00/82104597501.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a09967a5-ee31-455f-a288-b85e8c94192b/citizen_gold_watch_eco_drive_price.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_off0000e2cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2CB 5196 bytes
SHA-256: 84e511d65e1eb3f7f62d6acd852d3d6a298b55ae82c83e8a6e22caf9a429cf2f
font_01_sfnt_off0000f478.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF478 11164 bytes
SHA-256: b998840e38ef820363585600a7d7014b4b2fd149ebd14db48a1a97f34b38ffb5

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