Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0d2b1cdf6bdb986…

MALICIOUS

PDF

90.8 KB Created: 2021-04-03 10:22:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1a6256afa8a057d6449e433d1d3f8fb5 SHA-1: b891ec6e051aeb34e59fbd2fd7b2e07e3e135100 SHA-256: a0d2b1cdf6bdb986be4b7306d8677a4b391f6306a3780ebc313cb9b7e51519b1
96 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The document body, though partially obfuscated, suggests a lure related to a 'night owl security camera app for mac'. The presence of external URIs, such as 'https://druttle.ru/strik?utm_term=night+owl+security+camera+app+for+mac', indicates the document is designed to redirect users to malicious sites. No scripts were extracted, but the PDF structure and embedded URLs strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://druttle.ru/strik?utm_term=night+owl+security+camera+app+for+mac
    • https://cdn.sqhk.co/vulovosovem/ijhGKFj/36109115612.pdf
    • https://cdn.sqhk.co/ninivaxibab/o0t5Kjq/year_3_numeracy_worksheets_free.pdf
    • http://xejopegig.mypressonline.com/best_deals_on_roomba_vacuums_black_friday.pdf
    • http://fanisore.sportsontheweb.net/gijupifuxisiz.pdf
    • http://saxobupazes.sportsontheweb.net/como_trabalhar_no_consulado_brasileiro_nos_estados_unidos.pdf
    • https://cdn.sqhk.co/ribegibonot/hijjijB/bezakodumevopevoloso.pdf
    • https://cdn.sqhk.co/savekedeg/hfo6rgc/jisifijixipoji.pdf
    • http://tobufupevujuma.mygamesonline.org/wilonenilob.pdf
    • https://cdn.sqhk.co/losokifape/ZhdhdWH/57660495433.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/tobaziw/woxituzos.pdf
    • http://kawerulim.onlinewebshop.net/how_to_use_nikon_sb_600_flash.pdf
    • https://s3.amazonaws.com/lebejos/wevugajuranivesedobola.pdf
    • https://16fd3b15-5541-4454-9538-28daacbf497e.filesusr.com/ugd/e32576_49e4d5ad0af84a428039469683bde028.pdf?index=true
    • https://2a07c75e-e898-48ba-b326-4cccc82d0599.filesusr.com/ugd/ff154e_23dcab973f3842f189be920767f80d52.pdf?index=true
    • http://radiviwix.onlinewebshop.net/44789419847.pdf
    • https://s3.amazonaws.com/tixedujegibex/como_preparar_un_mensaje_biblico_para_predicar.pdf
    • https://s3.amazonaws.com/vabedafozo/79056302457.pdf
    • http://dapekafuxururo.myartsonline.com/does_coconut_milk_contain_carrageenan.pdf
    • https://s3.amazonaws.com/fogibi/rebofudarizuw.pdf
    • https://03386fec-e341-46be-bf9f-2f2bd19f9bfe.filesusr.com/ugd/bf57b5_18f6060519464e8bb0d4ae0197bde082.pdf?index=true
    • http://mugazukadum.onlinewebshop.net/cloud_atlas_piano_sheet.pdf
    • https://cef8af8d-7071-4339-ac50-fc417d371010.filesusr.com/ugd/a89196_784a337d137d463ebc88353513e86aa6.pdf?index=true
    • 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_off0001238b.bin
7e1b03ac2225cfaf9d998536817eaddb841f3ed0c51f53d4c3c987acc9f957d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1238B 5592 bytes
font_01_sfnt_off00013692.bin
6f313c4d0710ca175b2297b7f34e6b761fabec165dd94daba61f94ff8d47982f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13692 11076 bytes

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