Malicious PDF — malware analysis report

Static analysis result for SHA-256 15dfdf6832d3720f…

MALICIOUS

PDF

76.4 KB Created: 2021-09-06 22:03:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: e6b1fe2c7ac328673741471ee5c569df SHA-1: a8e6d8b91485db56cde101e8914a5a1388b2cad8 SHA-256: 15dfdf6832d3720fea39dbb268d9f11a0dc75c6e9ba7bf694d234f7251cdeeb2
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was identified as malicious by ML classifiers and ClamAV, detecting it as a phishing trojan. It functions as a link farm, containing numerous URLs that point to various websites, some of which are compromised or host other malicious PDFs. The primary purpose appears to be redirecting users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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://agendatourvietnam.com/hinhanh/file/sapofetesogeka.pdf In PDF document text
    • http://protech.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/161204f442ca67---majetasedavoxevaf.pdfIn PDF document text
    • http://helloslow.com/data/userfiles/files/lonikudakugetifunonone.pdfIn PDF document text
    • http://www.alexgis.com/siteuploads/editorimg/file/xekekowojifi.pdfIn PDF document text
    • https://www.pfgpartners.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16120a6a9ed33c---30559113525.pdfIn PDF document text
    • http://www.communityheroesproject.org/wp-content/plugins/formcraft/file-upload/server/content/files/160d9f0a541647---sexulo.pdfIn PDF document text
    • https://babetravelling.com/ckfinder/userfiles2/files/3536146851.pdfIn PDF document text
    • https://jills.reviewz.eu/app/webroot/files/userfiles/files/42593654162.pdfIn PDF document text
    • http://ty-int.com/files/files/28417578690.pdfIn PDF document text
    • https://sowlindia.com/userfiles/file/gexerebamajilosanopotubaz.pdfIn PDF document text
    • https://damiel.eu/userfiles/file/5072855325.pdfIn PDF document text
    • https://nocenzura.space/web/img/podborky/files/11179574220.pdfIn PDF document text
    • https://plumcourse.com/wp-content/plugins/super-forms/uploads/php/files/f4bc93658edf3130940d013e7aa59327/puvuverunokuru.pdfIn PDF document text
    • http://franzoesischebulldoggen.eu/userfiles/file/84673467080.pdfIn PDF document text
    • https://strategieb2b.ca/userfiles/file/dozadebibet.pdfIn PDF document text
    • https://wlao.on.ca/wp-content/plugins/super-forms/uploads/php/files/b4df5989354c93157f231158985485b2/63964992280.pdfIn PDF document text
    • http://xn--2vxr09c6mc.tw/CKEdit/upload/files/kofurepevarufine.pdfIn PDF document text
    • https://mlbcsimleague.com/ckfinder/userfiles/files/21262446681.pdfIn PDF document text
    • https://landi-bg.com/images/file/bavikedotub.pdfIn PDF document text
    • https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/2a825a5550123908587baac6d2f78cd1/4418493214.pdfIn PDF document text
    • https://tyko.pl/userfiles/file/3440531897.pdfIn PDF document text
    • http://conservationenergy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160769f932aba7---kupomudoginefirobixewub.pdfIn PDF document text
    • http://superfishinglewood.com/uploads/files/lidida.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=abnormal+psychology+an+integrative+approach+7th+edition+pdf+free+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_off0000c51f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC51F 16652 bytes
SHA-256: fe77710aa85ca671f5ada103d3b1893564bddd8e00f3033a04f091d239c70f58
font_01_sfnt_off0000f008.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF008 11504 bytes
SHA-256: 3d9f2461762486c860f46bc554534d3745a1a7809623c1a7546081907b0a14ac
font_02_sfnt_off00010adb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10ADB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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