Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec2a7999bed55cba…

MALICIOUS

PDF

79.6 KB Created: 2021-09-09 22:26:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 9a5a90cc03babc2987da1f2f85639915 SHA-1: 46354c47de8b96ede6fca62fe4a6686918ca1a70 SHA-256: ec2a7999bed55cba70279c4417fd5e2a81e4ce348345ffef5d2268a3a92c0868
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many pointing to disposable domains, indicating a link farm designed to host phishing content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a common phishing attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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://lecourbe.dk/userfiles/file/bazawijatewonawog.pdf In PDF document text
    • https://www.digitalsofts.com/wp-content/plugins/formcraft/file-upload/server/content/files/16134db4ac37d1---39242782444.pdfIn PDF document text
    • https://www.sharpeningfactory.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613028346e20c---wisifewi.pdfIn PDF document text
    • http://pytextiles.com/userfiles/file/79191496387.pdfIn PDF document text
    • https://asiarsolutions.com/userfiles/file/wuxarafoliganiraluzote.pdfIn PDF document text
    • http://systempro.kr/userData/board/file/borupibizivenivafowegagil.pdfIn PDF document text
    • http://studioguagnoni.it/userfiles/files/filopejajavezesenug.pdfIn PDF document text
    • http://emanuelmlevin.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/69977102884.pdfIn PDF document text
    • http://autoscuolepintozzi.it/userfiles/files/57862934007.pdfIn PDF document text
    • https://eownauto.com/uploadpic/files/fukodegaz.pdfIn PDF document text
    • https://alutat.com/data/file/saraxokiv.pdfIn PDF document text
    • http://csc-028.com/userfiles/file/20210907003344_37gh8b.pdfIn PDF document text
    • https://kolbandibileklik.com/resimler/files/98520249351.pdfIn PDF document text
    • https://mehfermobilsaglik.com/userfiles/file/domujidamezaveza.pdfIn PDF document text
    • http://agrobud.net/uploaded/file/47691158043.pdfIn PDF document text
    • http://philipp-haberland.de/images/upload/file/dotipet.pdfIn PDF document text
    • http://magiepourenfants.com/images/mediamanager/file/23079214898.pdfIn PDF document text
    • http://luxcottage.ru/stroykamen/userfiles/file/24718357310.pdfIn PDF document text
    • https://toolsatool.com/userfiles/files/35194098145.pdfIn PDF document text
    • http://ristoranteibucanieri.it/userfiles/files/17994687857.pdfIn PDF document text
    • http://merlegdoktor.hu/tmp/94242118705.pdfIn PDF document text
    • http://orbitsecurity.qa/pro_mvp_tech/uploads/file/buberizapiko.pdfIn PDF document text
    • http://www.annaleehuber.com/content_files/file/48350136186.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=river+road+recipes+pdfPDF 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_off0000d22d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD22D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ea3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA3F 17920 bytes
SHA-256: 894172b13a441d5e1b1a53b34d59a1f115c4bee9f8a2c94e887e9d8726eed201
font_02_sfnt_off00011897.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11897 10476 bytes
SHA-256: f8ec8666a36302447f201efcb4e90501fdc14edc6ef2503a8f0bc58bf4cc8ea6

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