Malicious PDF — malware analysis report

Static analysis result for SHA-256 a899d9315b009186…

MALICIOUS

PDF

75.5 KB Created: 2021-03-23 14:27:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c6fcdbff8fd6c92b7897e746efada0b7 SHA-1: d12286916731210481ae01bc90cdf9bb134e0232 SHA-256: a899d9315b009186c071e217d10971bdade8c5950368cc32681dcd1c217aeb2e
96 Risk Score

Malware Insights

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

The PDF file contains embedded URLs that lead to suspicious domains, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of external URIs and the overall detection profile point towards a malicious document designed to redirect users to potentially harmful content.

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://leonvi.ru/wix?keyword=anthem+legendary+contracts+rewards
    • https://tizitumobupo.weebly.com/uploads/1/3/4/9/134904485/japewo_benoxedad_xudonobuweto.pdf
    • https://zirubelazuzo.weebly.com/uploads/1/3/4/7/134747961/299787.pdf
    • https://varusimutajol.weebly.com/uploads/1/3/4/5/134502614/bozitoxobudugogi.pdf
    • http://fullcreditreport.info/template_kalender_2020_cdr_x4qzetf.pdf
    • http://parhelifrl.space/best_beginner_piano_book_for_adults_ukjez6f.pdf
    • http://fabulouss.space/run_android_emulator_without_android_studio_windowstpctj.pdf
    • http://itdiscount.info/libertango_free_sheet_music_accordionmdbn8.pdf
    • http://ketaton.mywebcommunity.org/fusionner_deux_adobe_reader.pdf
    • http://medgaj.com/briggs_and_stratton_3500_watt_generator_noise_level024hv.pdf
    • https://tarofojazen.weebly.com/uploads/1/3/4/2/134235484/xidokujuv_buvoxunapeduxaw_juvibajatu_kezisizog.pdf
    • http://alisaborodaenko.design/juwomosuzejadu1ac5.pdf
    • http://wupemokabate.scienceontheweb.net/business_card_print_template.pdf
    • https://taxezuwijukiwum.weebly.com/uploads/1/3/1/6/131606901/4250913.pdf
    • http://kostlike.site/botitosevagimozukomoper7yw1i.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://kepofif.onlinewebshop.net/70881459371.pdf
    • https://uploads.strikinglycdn.com/files/1b660601-1970-428d-96b6-2ac32a99dfe7/wekizofodidawubajivarele.pdf
    • https://uploads.strikinglycdn.com/files/97d4b199-6719-4ae3-b57d-101b8b97dea6/dewalt_compound_mitre_saw_10_inch.pdf
    • http://jezevenakos.myartsonline.com/gutejela.pdf
    • http://ziwivazud.onlinewebshop.net/maytag_centennial_dryer_start_switch_replacement.pdf
    • https://uploads.strikinglycdn.com/files/ba471afc-96b1-4b23-8486-f7a2b1ddd9c8/63595376987.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e964.bin
7c419903bf6b631599e89db3738b35e2298f209b96d031f439fc8224fa61b810		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE964 5536 bytes
font_01_sfnt_off0000fc23.bin
0ec3c76726e5aa9113aa2d54b7c3e77f22d6cf762de9ac262bed861f14f03e24		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFC23 10252 bytes

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