Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5b5e9203190586c…

MALICIOUS

PDF

74.5 KB Created: 2021-03-22 12:56:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 72a711f7fd984d95d7a30efd4ec70a18 SHA-1: 5c77d727b00f69293037497210db54d62acb56e4 SHA-256: a5b5e9203190586ca0d9af0bb04e633a68ab0a8386f0368186ba4134fa1bdeae
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, identified by ClamAV as a phishing trojan. The document body, though heavily obfuscated, contains text related to 'incumbency certificate free template', suggesting a social engineering lure. The presence of an external URI and the ML classifier's high confidence score indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://botokaw.ru/123?utm_term=incumbency+certificate+free+template PDF link annotation
    • http://jiwitoletazadag.iblogger.org/item_analysis_template_for_teachers.pdfIn PDF document text
    • http://lbaranaydin.com/google_search_by_image_firefox_browser_extensionpnvt4.pdfIn PDF document text
    • http://pajiweputuniwas.iblogger.org/74152695236.pdfIn PDF document text
    • http://dofuluxaruze.22web.org/alphabet_worksheets_free_printables.pdfIn PDF document text
    • http://proita.fun/74847704411o74a8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zinudipir/xopokevujumimojom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/467f54c1-f188-4294-9400-1fef8263c54e/1999_coleman_fleetwood_pop_up_camper_specs.pdfIn PDF document text
    • https://s3.amazonaws.com/punagilelabon/mefebuja.pdfIn PDF document text
    • http://zirivog.rf.gd/lomikogeridesixolodi.pdfIn PDF document text
    • https://s3.amazonaws.com/rodiligarexo/crossfit_training_with_weight_vest.pdfIn PDF document text
    • https://s3.amazonaws.com/tubupejevomo/86969569037.pdfIn PDF document text
    • https://s3.amazonaws.com/zifilobesumafi/bottle_hang_tag_template.pdfIn PDF document text
    • https://s3.amazonaws.com/xajowu/boralex_inc_annual_report_2018.pdfIn PDF document text
    • http://mevonaku.rf.gd/85034843240.pdfIn PDF document text
    • https://s3.amazonaws.com/gonafoziguwewe/visuxomobelu.pdfIn PDF document text
    • https://s3.amazonaws.com/gogoxowiniza/adjektivdeklination_deutsch.pdfIn PDF document text
    • http://tupusivamiguta.rf.gd/jyoti_name_cake_pic.pdfIn PDF document text
    • http://vorawaforase.epizy.com/alif_laila_full_movie_bangla_free.pdfIn PDF document text
    • http://zalolod.epizy.com/fusionner_2_1_page_sur_2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6b696cd-7758-4ee4-a220-c97652899db9/lajujajozivusal.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_off0000e88c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE88C 5160 bytes
SHA-256: b7190b5f9dddc41d31c83b4fc17dc8123fe49a4e653c71afd90c0657d225b62d
font_01_sfnt_off0000fa0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA0C 10060 bytes
SHA-256: 41e31aa96b2bfba2819a0153cea43dc75f1fe4c631a155d04a4aaafdd0b6f376

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