Malicious PDF — malware analysis report

Static analysis result for SHA-256 be0ebb02093c6989…

MALICIOUS

PDF

79.9 KB Created: 2021-09-29 10:11:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: b300369a86f5636fccd480417c53299d SHA-1: 2a00afc43569b992d544646cf2097671133761cc SHA-256: be0ebb02093c6989f2d683c5b6a5a73976fec732b875927de0da032b4ebbed02
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external URIs, many of which point to disposable domains, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to trick users into downloading further payloads via the provided links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://digireg.com/upload/60015689007.pdf In PDF document text
    • https://trouver-une-ssii.com/img/pics/files/fitipufabagojuziw.pdfIn PDF document text
    • http://daieimotors.com/js/upload/files/tidomebexexaxanopuzalexif.pdfIn PDF document text
    • http://thankschicken.com/uploads/files/6650707518.pdfIn PDF document text
    • http://tobn56.com/UpFiles/file/nonafivitekejitober.pdfIn PDF document text
    • http://espressobuilders.com/app/webroot/files/userfiles/files/sunawo.pdfIn PDF document text
    • http://cana.vn/uploads/userfiles/file/75956684052.pdfIn PDF document text
    • http://thai-apsproducts.com/file_media/file_image/file/zogosorifok.pdfIn PDF document text
    • http://sallytour.com/FileData/ckfinder/files/20210920_0DAAF1D36C6623C7.pdfIn PDF document text
    • http://master-vin.ru/files/file/pobop.pdfIn PDF document text
    • http://cabini.it/userfiles/files/47267325858.pdfIn PDF document text
    • https://a-pointpro.com/cms/ckfinder/userfiles/files/42546137910.pdfIn PDF document text
    • http://uniondrygoods.com/fckeditor/userfiles/file/sodila.pdfIn PDF document text
    • http://www.kzhep.in.ua/wp-content/plugins/super-forms/uploads/php/files/oq2tdbvo756n9opnkku68i6i30/zizuxevamidopoxire.pdfIn PDF document text
    • http://vitalchurchesinstitute.com/files/file/27049080469.pdfIn PDF document text
    • https://brtim.com/uploads/wysiwyg/files/85594676834.pdfIn PDF document text
    • http://www.hebrewforreadingcomprehension.com/content/vubojezegaxiwapatub.pdfIn PDF document text
    • http://cascinamana.it/userfiles/file/babetaxisoxexosiziwiva.pdfIn PDF document text
    • http://jiachuankeji.com/upload_fck/file/2021-9-29/20210929111020179107.pdfIn PDF document text
    • http://huichem.com/ckfinder/userfiles/files/88954184389.pdfIn PDF document text
    • http://olgapolyakova.de/files/files/11188639391.pdfIn PDF document text
    • https://magiccat.pro/ckfinder/userfiles/files/sofoxuwewevenito.pdfIn PDF document text
    • http://vietsaovang.com/uploads/userfiles/file/kizisozine.pdfIn PDF document text
    • http://www.colormotion.cz/UserFiles/file/misesif.pdfIn PDF document text
    • http://perilatomsk.ru/ckfinder/userfiles/files/mewazojot.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=download+cheat+higgs+dominoPDF link annotation
    • 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 PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cd04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD04 20016 bytes
SHA-256: 98a44c650c3a17b9ec3064e6c27bac3c94d298d8edef368656e3d71d87266cb3
font_01_sfnt_off00010107.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10107 10804 bytes
SHA-256: 95ca3d8b4ca9689401f671b7909515436de5e9b7d2836c5d910ccf4e470e890b
font_02_sfnt_off00011996.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11996 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1