Malicious PDF — malware analysis report

Static analysis result for SHA-256 40f733119cc43b44…

MALICIOUS

PDF

76.5 KB Created: 2021-08-20 06:19:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: ad89036c77fb8cb958dd72e355b580d6 SHA-1: ce18b29ac89f23676e9db20c442a329008b7487f SHA-256: 40f733119cc43b44abb5ed0c2e1f3fb92ee1157d7d4054e306d892cf7bcbe247
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics as malicious, including a high ML score and ClamAV detection as a phishing trojan. It contains a link farm pointing to numerous websites, many of which appear to be compromised WordPress installations or disposable hosting. The primary purpose seems to be redirecting users to external sites, likely for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://binarbaidrealestate.com/public_html/userfiles/file/92302840258.pdf In PDF document text
    • https://bistakalikotenetwork.com/userfiles/file/69974260935.pdfIn PDF document text
    • https://sodigital.it/wp-content/plugins/formcraft/file-upload/server/content/files/160e9148c7ae31---79991116545.pdfIn PDF document text
    • http://www.etoiles-recrutement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc966025ca3---zifigidexola.pdfIn PDF document text
    • http://geose.ru/userfiles/file/91569672066.pdfIn PDF document text
    • http://hiroi-es.info/yamituki-n/uploads/files/72538009531.pdfIn PDF document text
    • https://cremeconferences.com/wp-content/plugins/super-forms/uploads/php/files/59b23134f1be1b1bd98aef85762b5748/78924701968.pdfIn PDF document text
    • https://irisapp.cn/uploadfiles/fckeditor/20210731/file/16277268597485.pdfIn PDF document text
    • http://in-dapt.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d7a76d64595---radijixidarini.pdfIn PDF document text
    • https://gizaviation.com/uploads/files/31057968655.pdfIn PDF document text
    • https://championsforchildren.org/wp-content/plugins/super-forms/uploads/php/files/9bc13acf895a7994888beca9ffc83ea5/misitipeg.pdfIn PDF document text
    • https://digireg.li/upload/lirikunikelu.pdfIn PDF document text
    • http://bbu.vn/Images_upload/files/radokudakedikazotozoloson.pdfIn PDF document text
    • https://lostsoulsmemorialnj.org/wp-content/plugins/super-forms/uploads/php/files/6f006785c1fff7719f0795f509dbf4ce/tawin.pdfIn PDF document text
    • http://www.guaitoli.eng.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c0735dc2e24---7450794445.pdfIn PDF document text
    • https://audreyheselmans.com/_files/file/pisezef.pdfIn PDF document text
    • https://georeno.ca/userfiles/files/38754993060.pdfIn PDF document text
    • https://kaskad-74.ru/images/uploads/9642823620.pdfIn PDF document text
    • https://www.analfissur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607538fce344d---tofirazidor.pdfIn PDF document text
    • http://patronusalapitvany.hu/public_html/upload/38849423358.pdfIn PDF document text
    • http://vnsteeldetailing.com/UserFiles/files/wakarupewilikesetix.pdfIn PDF document text
    • http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca539f258d---93772275368.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=madinah+arabic+reader+book+4+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_off0000c7e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7E9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e000.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE000 10708 bytes
SHA-256: 948ed65f530e5ab8ff74adb11eb91bc5bad7e68045c15352afe1614dfb32567d
font_02_sfnt_off0000f834.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF834 16584 bytes
SHA-256: ca0bb9e97594427e4bc4004a67b0b5a41cc6e09d48f2e6d2c3a009b4576b787f

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