Malicious PDF — malware analysis report

Static analysis result for SHA-256 441efbdaff09f828…

MALICIOUS

PDF

92.6 KB Created: 2022-04-19 14:47:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-05
MD5: bd22bc4440adb915b2831977c7c895ad SHA-1: 5ca10eff821127be251dc89f24e5373fe6701f60 SHA-256: 441efbdaff09f828928a38dc672a24a973a693b4f54feaac41b0737f3dbee501
211 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 7

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • PDF advertises pirated movie streaming/download medium PDF_PIRACY_STREAMING_LURE
    PDF rendered text advertises free full-movie streaming or download using piracy-brand names or a 'full movie + download/free/watch' intent phrase — recovered after folding the styled Unicode confusables the campaign uses to hide those keywords from plain-text detection. These are disposable SEO-spam carriers that route users to malvertising, fake-player, and scam pages; the PDF itself is inert.
  • 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.
  • 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://yubit.co.za/YmrXLWy8?keyword=how%20to%20clean%20baby%20jumper PDF link annotation
    • http://mintaialuminum.com/d/files/81449953578.pdfIn PDF document text
    • https://zoludapi.weebly.com/uploads/1/3/4/5/134528767/faxofod_pafuta_xavejipiw.pdfIn PDF document text
    • http://sushrutproctology.org/ckfinder/userfiles/files/vunapizetesali.pdfIn PDF document text
    • https://lakadepoti.weebly.com/uploads/1/3/5/3/135301691/bdeef52.pdfIn PDF document text
    • http://srimmigrationconsultants.com/kcfinder/upload/files/laxexexesevusijibativo.pdfIn PDF document text
    • https://mufejuraziga.weebly.com/uploads/1/3/0/8/130814984/bagavupuwixula.pdfIn PDF document text
    • http://bmfjhjk.friend-match.com/upload/files/tikipen.pdfIn PDF document text
    • https://bukalejobiwasek.weebly.com/uploads/1/3/1/4/131409200/jovugudizebuma-dodowezel-tojozu.pdfIn PDF document text
    • https://wakukowasipala.weebly.com/uploads/1/3/4/6/134649118/4762855.pdfIn PDF document text
    • http://livestocksaltlicks.com/ckeditor/kcfinder/upload/files/52226224833.pdfIn PDF document text
    • http://gadkowski.pl/repository/filemanager/file/47330084882.pdfIn PDF document text
    • https://pagipakudux.weebly.com/uploads/1/3/5/3/135343553/xepegirurunoj-gubovaso-nufofifokam-mitop.pdfIn PDF document text
    • http://www.fbs-g.com/kcfinder/upload/files/76847086857.pdfIn PDF document text
    • https://ncfouting.com/wp-content/plugins/formcraft/file-upload/server/content/files/16210c4b9d63ce---sabuxetokobim.pdfIn PDF document text
    • http://anantitsolution.com/ckeditor/kcfinder/upload/files/donizowojajiluwuzimuru.pdfIn PDF document text
    • https://worejatejele.weebly.com/uploads/1/3/4/0/134095890/folenulufukobi.pdfIn PDF document text
    • https://fitadidexedas.weebly.com/uploads/1/3/5/9/135977916/fawokozine.pdfIn PDF document text
    • http://twsl.mingann.info/upload/ckfinder_temp/files/20220410014838.pdfIn PDF document text
    • http://nacyc.jp/Upload/file/62723769356.pdfIn PDF document text
    • https://rupogasonewu.weebly.com/uploads/1/3/4/6/134653860/bokovekuzalunut.pdfIn PDF document text
    • https://vunojomilubokub.weebly.com/uploads/1/3/0/7/130775688/xudavutula_bojadutaras.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://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off00010538.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00010538.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010538.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10538 17380 bytes
SHA-256: 48b56b0e70dc8fc31c2f30feef5b55c4a37a69c6052994529a911c87b9a034bb
font_01_sfnt_off00013340.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13340 10836 bytes
SHA-256: 666533cd4b905c8d0c5ff2cf79f28703d9250fa04c7bf487664afadafe2cdb5f
font_02_sfnt_off00014c12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14C12 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1