Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6eb0e2e517a2f26…

MALICIOUS

PDF

82.9 KB Created: 2021-04-06 13:19:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 8c6e3e8b9d8665634cb1b3cc8092ad4d SHA-1: 78594bae168fb18166ea5b42528214291b105e40 SHA-256: a6eb0e2e517a2f2637060a2cd76839d9bfa2f217629f7ec3d7aec19c4d8bde63
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, 'dugedepap.ru', which is likely used to host a malicious payload or phishing page. No scripts were extracted, but the presence of the malicious URL and the detection signatures strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://dugedepap.ru/strik?utm_term=fire+and+ice+boston+open PDF link annotation
    • https://cdn.sqhk.co/bujasugawo/ihihbjW/digestive_tract_anatomy_order.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458390/normal_6047a5a9c370b.pdfIn PDF document text
    • https://cdn.sqhk.co/puwokiraf/gjDiagc/the_classical_music_guide.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465687/normal_60348fbd13a24.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369174/normal_5fc85e69c90c3.pdfIn PDF document text
    • http://tumexade.22web.org/85128325598.pdfIn PDF document text
    • https://cdn.sqhk.co/medijamowole/khbKUib/gizinijejagexenigonefa.pdfIn PDF document text
    • https://cdn.sqhk.co/tazurusubiz/Hhdz39B/my_electric_meter_is_blinking.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482648/normal_5fee1db370218.pdfIn PDF document text
    • https://cdn.sqhk.co/fenazijeguk/gUCjhiq/facts_tuition_management_parent_login.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
    • https://8d67285a-e3c5-4820-bb1a-bb91ce1079a6.filesusr.com/ugd/d54300_f5967641fe9c41b1939df00d49957c23.pdf?index=trueIn PDF document text
    • http://kugidozu.epizy.com/23435831007.pdfIn PDF document text
    • https://s3.amazonaws.com/nitajosasa/detailed_classified_balance_sheet_example.pdfIn PDF document text
    • https://s3.amazonaws.com/dinisemowoge/muzajoloxakobe.pdfIn PDF document text
    • https://8d537faf-e869-4ed9-a29f-988560fab1dc.filesusr.com/ugd/0cce51_196a880ada774e85a0813c7d49383cb1.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d65a816-e135-447b-9197-7d1a860b7d3b/decision_tree_python_code_from_scratch_github.pdfIn PDF document text
    • https://a04ad255-06d6-4b17-97e7-91173d300295.filesusr.com/ugd/6864df_d30553fbf8d04af39d1620390ce9aec6.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/c12a6346-2059-4801-b4a4-46751f4cc85e/do_arbys_have_soup.pdfIn PDF document text
    • http://wumevejuraluxe.rf.gd/itr_acknowledgement_form_2020_17.pdfIn PDF document text
    • https://s3.amazonaws.com/gazivemon/samsung_google_bypass_app.pdfIn PDF document text
    • https://s3.amazonaws.com/fedure/why_is_my_nissan_pathfinder_overheating.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae5d1fc5-ba34-49bb-afcd-846e907a5efe/55440675327.pdfIn PDF document text
    • https://s3.amazonaws.com/radubozufiwo/when_was_infinix_note_4_released.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_off0000f6f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6F7 4916 bytes
SHA-256: 1260601982ff009d2b63b9cf43c9fb4d828e9311aba81323276dc32d14977736
font_01_sfnt_off000107a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107A2 11452 bytes
SHA-256: 3da9b84bd0c7e2e8d43b9a3770be3ba85eaeb64c2159f62c843af5e00d7f3953
font_02_sfnt_off00012edc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12EDC 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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