Malicious PDF — malware analysis report

Static analysis result for SHA-256 365d39189cac68ca…

MALICIOUS

PDF

78.8 KB Created: 2021-04-07 22:41:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 1ef856b0d8962ace647b910f08c8e9cc SHA-1: 22e61836bd8e4fc96a89389c0fbc800b42372e6e SHA-256: 365d39189cac68ca0b77ce15a14a37a3580b3c51f3c905d3aca0cffb28100290
146 Risk Score

Malware Insights

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

The PDF document impersonates a cloud document lure, directing the user to click on an external URI. This URI likely leads to a malicious website designed to host further stages of the attack. The ML classifier and ClamAV detection strongly indicate malicious intent, and the presence of numerous external links points towards a phishing or redirection scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Cloud document impersonation lure medium SE_CLOUD_DOC_LURE
    Document impersonates a cloud file-sharing service such as SharePoint, OneDrive, Google Drive, Dropbox, Box, or Microsoft 365 and asks the user to open, verify, or access a shared document
  • 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://mezovuduw.ru/strik?utm_term=what+does+agile+software+development+mean+in+project+management PDF link annotation
    • https://cdn.sqhk.co/noperizapewo/icUdD5n/words_of_twd_fan_trivia_games_online.pdfIn PDF document text
    • http://kotudekudoges.getenjoyment.net/american_english_file_2_first_edition_teacher_s_book.pdfIn PDF document text
    • http://bipowilago.mywebcommunity.org/q_see_security_camera_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/putizimetiwe/Ocashbh/chemical_carcinogens.pdfIn PDF document text
    • http://zinobinipote.22web.org/dagajibejisifu.pdfIn PDF document text
    • http://wiwovurezibaso.getenjoyment.net/zoho_c_aptitude_questions_2020.pdfIn PDF document text
    • http://mebotus.mypressonline.com/sales_and_marketing_assistant_job_description.pdfIn PDF document text
    • http://vumogegotawugub.mypressonline.com/rimsky_korsakov_orchestration_online.pdfIn PDF document text
    • http://xufaroruguvotel.iblogger.org/vapuvobo.pdfIn PDF document text
    • http://xulazawelinuze.scienceontheweb.net/89805659273.pdfIn PDF document text
    • https://cdn.sqhk.co/kupejabel/sgf8gcZ/dip_master_apk_uptodown.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454677/normal_5ff13b61dd51b.pdfIn PDF document text
    • http://zusiwibewire.mypressonline.com/70037413300.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453342/normal_60504a738674e.pdfIn PDF document text
    • https://cdn.sqhk.co/dawupana/igIxje8/paretulepawasonuv.pdfIn PDF document text
    • http://zusagukitu.mywebcommunity.org/scratch_3._0_tutorials.pdfIn PDF document text
    • http://mofonuf.medianewsonline.com/cbn_cashless_policy_circular_2020.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dolanuvusipegu.myartsonline.com/50671101085.pdfIn PDF document text
    • https://s3.amazonaws.com/wezukep/new_moon_jan_2021_pst.pdfIn PDF document text
    • http://dubovusikiwafaz.epizy.com/que_quiere_decir_ley_segun_la_biblia.pdfIn PDF document text
    • https://s3.amazonaws.com/jebupofedijakuk/80310500964.pdfIn PDF document text
    • http://xesapekaf.epizy.com/jirekixibovip.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_off0000f5db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5DB 5812 bytes
SHA-256: edd0e6e07b8b93cc502d38e1263e41a0b0d9564c1971321c90040f6ff5f8ba7e
font_01_sfnt_off000109a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109A8 10608 bytes
SHA-256: 08395db66bcbf370cbf3bc149379ffce6edfe94c18d72073764198aaace54838

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