Malicious PDF — malware analysis report

Static analysis result for SHA-256 abeeb76c0bad97ef…

MALICIOUS

PDF

82.2 KB Created: 2021-09-11 14:36:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: f26f9d7940aeb6542bc9b152565f3153 SHA-1: 3c1e797f15102261cfc72e04be1695d9dc09f534 SHA-256: abeeb76c0bad97eff8512d6a91d9dedaba1adf3f0479ec21c06e9b9f530daf96
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The sample is a PDF file identified as malicious by ML classifiers and ClamAV. It functions as a link farm, containing numerous URLs pointing to other PDF files hosted on various domains, some of which are flagged as compromised CMS uploads or disposable hosting. The presence of these links suggests an attempt to lure users to download further malicious content or engage in phishing activities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9917

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 http://lejuriste.ru/files/file/xuvutimefagujowaro.pdf In PDF document text
    • https://readxyz.com/wp-content/plugins/super-forms/uploads/php/files/7d931cceed48013615317d4ac0e73fe2/4565903478.pdfIn PDF document text
    • https://asiantms.com/ckfinder/userfiles/files/26856970238.pdfIn PDF document text
    • https://branchennachweis.eu/userfiles/file/xewumojelezubutumabije.pdfIn PDF document text
    • http://zygzak.eu/foto_dane/wysiwyg/File/58693684753.pdfIn PDF document text
    • http://www.sudaff.com/pics/file/powomesamefezepisibo.pdfIn PDF document text
    • https://www.syah.org/wp-content/plugins/super-forms/uploads/php/files/8a38a4fee3e4459cd1db454cd3602b07/64328528158.pdfIn PDF document text
    • http://osteriadelcampanile.com/userfiles/files/72668056952.pdfIn PDF document text
    • http://inspiredindianfoundation.org/uploads/96712051443.pdfIn PDF document text
    • http://lotusromeo.fr/app/webroot/files/userfiles/files/daxedonobabanusama.pdfIn PDF document text
    • https://tkpmission.org/wp-content/plugins/formcraft/file-upload/server/content/files/16131da384d892---mesesofitirofekikodal.pdfIn PDF document text
    • http://ceramvetro.net/userfiles/file/66185871981.pdfIn PDF document text
    • https://adtw1.elfjane.com/ckfinder/userfiles/files/togugirabuxupemerufuv.pdfIn PDF document text
    • https://farmaciasacoor.com/site/upload/file/gogufumaxaxoza.pdfIn PDF document text
    • http://ozdesignhouse.com/app/webroot/uploads/files/5402407354.pdfIn PDF document text
    • http://fsanaq.com/upload/file/2109110204312422523b3tr3nozda6.pdfIn PDF document text
    • https://grupo-kayros.com/userfiles/file/zuxovan.pdfIn PDF document text
    • https://middletonchambers.com/ckfinder/userfiles/files/67980984614.pdfIn PDF document text
    • http://cgmorenanews.com.br/ckfinder/userfiles/files/wosuta.pdfIn PDF document text
    • https://ohligschlaeger-berger.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613bfc95d5b85---bogamubusaluzujawawumus.pdfIn PDF document text
    • https://flcevent.fcu.edu.tw/plugin/ce1/ckfinder/userfiles/files/20210904203256.pdfIn PDF document text
    • http://pronobile.com/catalog/file/sofetubafebebojevomubusu.pdfIn PDF document text
    • http://wine-paraphernalia.com/files/winep/_repo/file/lolirowilozuz.pdfIn PDF document text
    • https://kvzriu.org/images/file/dudikasinudidazibufidegeg.pdfIn PDF document text
    • https://sayurmateng.com/contents/files/soresovirubowijonuwu.pdfIn PDF document text
    • http://xn--b1amishc2fb.xn--p1ai/ckfinder/userfiles/files/tojofimiselovopet.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=farm+town+hack+apk+downloadPDF 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_off0000dd50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD50 17912 bytes
SHA-256: 38624e3765766e3336acc8443309024108d23ac4ab2a718196aa3e4578b51a00
font_01_sfnt_off00010b37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B37 10544 bytes
SHA-256: 749005cc1b81746f34805383aa9baf1012e200bfa553b76d40434d378893a6d5
font_02_sfnt_off00012313.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12313 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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