Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba0898b226fd2f20…

MALICIOUS

PDF

81.9 KB Created: 2021-09-17 04:55:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: b60e2ca1337db699b6a51a6e9c8a5d4a SHA-1: aac35d34de33b3ea6f4ff1870a29debcebda8e08 SHA-256: ba0898b226fd2f207c8751a92e3e165343235b98cede0464d17a1cf7240bcef1
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains embedded JavaScript and a high density of external links, many of which are hosted on disposable domains and utilize UTM parameters, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to redirect users to malicious sites or facilitate the download of further malware. The embedded JavaScript is likely used to obfuscate the malicious links or perform further actions upon opening.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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.
  • 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://pixomot.ru/uplcv?utm_term=getting+over+it+game+download+for+mobile PDF link annotation
    • https://weilaimachinery.com/userfiles/files/59108051133.pdfIn PDF document text
    • http://prosquash.by/data/11593082567.pdfIn PDF document text
    • https://acconpriti.com/ckfinder/userfiles/files/69262741872.pdfIn PDF document text
    • http://tecnoservizi.com/userfiles/files/dabumofexopitu.pdfIn PDF document text
    • https://orig-shop-gsm.ro/ckfinder/userfiles/files/33908166657.pdfIn PDF document text
    • https://polandpools.com/contents/files/41634645117.pdfIn PDF document text
    • http://www.lifestaralberta.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136645200b37---33488945471.pdfIn PDF document text
    • https://keyseries.us/userfiles/file/52481189917.pdfIn PDF document text
    • http://arcdesantmarti.com/biocop/Images/images-editor/file/39963652431.pdfIn PDF document text
    • https://bizdrive.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/161410f55dacfe---lalexejalekikurevos.pdfIn PDF document text
    • https://gym-rectif.fr/ckfinder/userfiles/files/sotatulejezi.pdfIn PDF document text
    • http://quesnelbusinessnetwork.ca/userfiles/file/gidixebuwek.pdfIn PDF document text
    • http://tea-ra.com/user_data/upload/save_image/files/nonarapasisajifubama.pdfIn PDF document text
    • https://www.colegiodomus.com.br/js/ckfinder/userfiles/files/3146155902.pdfIn PDF document text
    • https://electroagro.es/pub/files/99690380399.pdfIn PDF document text
    • http://vyveva.eu/UserFiles/File/2937325386.pdfIn PDF document text
    • http://sibaco.ru/ckfinder/userfiles/files/moburizivibezakixopoxif.pdfIn PDF document text
    • http://steffis-strassladen.de/userfiles/file/79896304717.pdfIn PDF document text
    • http://stcforanebanglore.smcim.com/www/js/ckfinder/userfiles/files/21439504248.pdfIn PDF document text
    • https://micsys.in/userfiles/file/29230686672.pdfIn PDF document text
    • https://worldcastlive.com/userfiles/file/japitarav.pdfIn PDF document text
    • http://pomelieagency.com/userfiles/files/93917039325.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 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_off0000da14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA14 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f226.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF226 17924 bytes
SHA-256: ec007cd411d06a6c5a641c256c1da8d262eaf39ce4f6d9b1a88cd9c58cd2ade7
font_02_sfnt_off000120a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120A8 10860 bytes
SHA-256: d3b2bdb7e6555e9c76da43a586eba3cf76243d6c0fab24a34233c85129f11fc1

Open this report in the interactive analyzer, or submit your own file for analysis.