Malicious PDF — malware analysis report

Static analysis result for SHA-256 77e8bffa1569274b…

MALICIOUS

PDF

84.5 KB Created: 2021-03-15 16:42:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d90dbcf0e4aca06ad395e1e4abdf06e5 SHA-1: 7001a226df6c41621461e6e8af52ca67e888e3e2 SHA-256: 77e8bffa1569274bb1645f19e6df8a9cf17c0db9cdb0be2e14fbce3a72303c8c
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though partially corrupted, contains text related to a product search, suggesting a lure to trick users into clicking the malicious link.

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://xezojetit.ru/strik?utm_term=cosco+pronto+high+back+booster+seat+22-491+fsm
    • https://cdn-cms.f-static.net/uploads/4447450/normal_5fd2534ebf9b3.pdf
    • http://wekeb.space/manual_usuario_iphone_xr_en_espaolya6jg.pdf
    • http://sandiego-podcasts.com/miponibojutomijoljg8x.pdf
    • https://static.s123-cdn-static.com/uploads/4382949/normal_600327a3b48fb.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/6564b06b-3a51-405e-b3fa-79eeeb76961f/nasasupavukoxelirebejixil.pdf
    • https://s3.amazonaws.com/sesijesule/44800586937.pdf
    • https://uploads.strikinglycdn.com/files/4c82b0f3-477a-49f4-b25b-027c5d6caf12/statistical_tools_for_data_analysis_examples.pdf
    • https://s3.amazonaws.com/lovetijif/50592798878.pdf
    • https://s3.amazonaws.com/wozowuledij/hyderabad_chatal_band_naa_song_dj.pdf
    • https://s3.amazonaws.com/ligole/circuits_systems_and_signal_processing_word_template.pdf
    • http://nasipitizu.epizy.com/childish_gambino_redbone_sheet_music.pdf
    • https://s3.amazonaws.com/zikeko/body_mass_index_chart.pdf
    • http://movebuze.epizy.com/intelligence_and_security_committee_report_2018.pdf
    • https://s3.amazonaws.com/xidulumexi/fromm_heartland_gold_puppy_feeding_guide.pdf
    • https://s3.amazonaws.com/wenobagupexekap/88714291450.pdf
    • https://s3.amazonaws.com/tesodagiwor/94268490007.pdf
    • http://jataluwapimose.rf.gd/koporelurip.pdf
    • https://uploads.strikinglycdn.com/files/9eabef95-1650-4629-a941-464c86fa1efe/38238544318.pdf
    • https://uploads.strikinglycdn.com/files/d78b715e-45d7-4389-bf9c-0d0e94c8ab88/how_often_should_transmission_fluid_be_changed_toyota_corolla.pdf
    • https://uploads.strikinglycdn.com/files/463ba735-c4a1-480a-a5af-15802c1c9764/vanity_fair_outlet_mall_mesa_az.pdf
    • https://s3.amazonaws.com/kesumasaka/pavukikobowaponexizizi.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_off00010974.bin
07bbf9235551bcafc0f7b5beeda24b94ccccf153cf7a7ed426023a6f81e0ac7d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10974 5964 bytes
font_01_sfnt_off00011dae.bin
fdcef6cff2a50089b72a8f258c5c17edf8fcc22a279741269f35bf5c184ab1e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11DAE 11448 bytes

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