Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a118a85b1c32c8c…

MALICIOUS

PDF

80.9 KB Created: 2021-09-17 07:16:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 51463c89b33b88d08516b14d73d4c45a SHA-1: cfda25cc908f6620de27bef33d1299adec4b2407 SHA-256: 7a118a85b1c32c8ca612a3f1818575b8386ce9b2c4693ace75112dc884f91b5c
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs pointing to various domains, indicating a link farm or phishing attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

Heuristics 5

  • 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.
  • 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://inwebjor.ru/uplcv?utm_term=promo+code+roblox+free+robux+2021 PDF link annotation
    • https://theelementrama9.com/userfiles/files/mefuxisadabowakaf.pdfIn PDF document text
    • https://yesilkoyluleriz.biz/resimler/files/36298952225.pdfIn PDF document text
    • http://www.galiantsolutions.com/emailimages/file/tajatolekigofabafade.pdfIn PDF document text
    • https://dunaweb.co/bg_image/files/fazil.pdfIn PDF document text
    • http://shinies.ru/img/lib/file/18740310369.pdfIn PDF document text
    • http://pck.malopolska.pl/wp-content/plugins/super-forms/uploads/php/files/955264ccb5fa1f33da4f68fc96fbbffb/zesitarozotodisudizovuwu.pdfIn PDF document text
    • https://rocksoliddesigns.biz/userfiles/file/25359180273.pdfIn PDF document text
    • http://epoxidice.ro/mm/file/detewusabaruwutuvura.pdfIn PDF document text
    • https://afayl.com/userfiles/file/wixoxitarosetonel.pdfIn PDF document text
    • http://grossbuch.com/upload/file/60336279233.pdfIn PDF document text
    • http://epoptavky.com/is/images/FCKeditor/File/62842420618.pdfIn PDF document text
    • http://yilip.net/userData/board/file/28109928902.pdfIn PDF document text
    • http://market-oborudovanie.ru/upload/file/retijunetavalamizulevifem.pdfIn PDF document text
    • http://eaupureinternational.com/userfiles/file/sexodemimeziduna.pdfIn PDF document text
    • http://artvideo74.ru/upfiles/files/87679199123.pdfIn PDF document text
    • https://mcq-exambd.bdbabymart.com/app/webroot/ckfinder/userfiles/files/sofitir.pdfIn PDF document text
    • http://www.prunay-en-yvelines.fr/ckfinder/userfiles/files/39652860686.pdfIn PDF document text
    • https://tierlistei.ch/downloads/92955716876.pdfIn PDF document text
    • http://hzyixiangchem.com/upload/files/5696963446.pdfIn PDF document text
    • https://prestinieurope.com/userfiles/files/kilogeli.pdfIn PDF document text
    • http://abwingsmd.com/uploads/files/28521199512.pdfIn PDF document text
    • http://theydeserveastamp.org/wp-content/plugins/formcraft/file-upload/server/content/files/1613c44a18c2b9---94893952104.pdfIn PDF document text
    • http://xn--tnqz8hz5cb8l.com/upload/files/81642585019.pdfIn PDF document text
    • http://khacvietlaser.vn/public/images_news/files/welelurepedozudikepim.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_off0000d7cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7CD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000efe4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFE4 10648 bytes
SHA-256: 8fd01920b3bc5c7a3b06cae8670b95ef4bfe0e4c7a246226fcb727569043ddb6
font_02_sfnt_off00010859.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10859 17392 bytes
SHA-256: 80cb4bec11a71e514623d750ee298dac7bae9349440843de6ddcc61753a49994

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