Malicious PDF — malware analysis report

Static analysis result for SHA-256 926ed2245d689724…

MALICIOUS

PDF

87.0 KB Created: 2021-06-28 01:24:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: c7352ef943241f34bb531a57b446e197 SHA-1: be2c6bdddd2c603610e41ea2d316d3c5912cd081 SHA-256: 926ed2245d6897240a04764e1526bc7fe4255dcbb99e81bfc93404e42cf535cf
156 Risk Score

Malware Insights

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

The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many of which point to compromised WordPress sites, suggesting a link farm designed to redirect users to malicious destinations. The presence of these links and the overall structure strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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://webhostmurah.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc5fe82112---831232261.pdf In PDF document text
    • https://eliteswimmingpoolsinc.com/wp-content/plugins/super-forms/uploads/php/files/9tjniah3vat1tro32vu3cbs3j1/mugesavi.pdfIn PDF document text
    • https://amagi.la/wp-content/plugins/formcraft/file-upload/server/content/files/160a1d6dbefbc4---93258636184.pdfIn PDF document text
    • https://stefandes.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089938e0028c---xupesemopetawa.pdfIn PDF document text
    • http://erbaytag.com/resimler/files/5622376104.pdfIn PDF document text
    • http://www.finanzanlagen-honorarberatung.de/wp-content/plugins/formcraft/file-upload/server/content/files/160899d646d8f5---63403588347.pdfIn PDF document text
    • http://china-miyaco.com/img/file/2021619172845.pdfIn PDF document text
    • http://yoron.net/up/files/6808237126.pdfIn PDF document text
    • https://angel-juicer.com/FileData/ckfinder/files/20210615_7FCBB0E0F8AE45EF.pdfIn PDF document text
    • http://grupopiscis.com/upload/files/lawosedovuwukosopo.pdfIn PDF document text
    • http://www.auditsi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f93daca037---kekajuwifisupoparoparus.pdfIn PDF document text
    • https://freedomtampons.com/wp-content/plugins/super-forms/uploads/php/files/bc8d24d055b5e507b5695d36013cf787/rifugodamepeg.pdfIn PDF document text
    • https://www.bountyvacation.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074cbdda691a---64983254768.pdfIn PDF document text
    • http://denki-shonan.com/uploadsfile/53905573301.pdfIn PDF document text
    • http://unipell.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609c456d112d3---61763646020.pdfIn PDF document text
    • http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1609850446c284---nevuzudoviwoj.pdfIn PDF document text
    • https://autosofortkauf.ch/wp-content/plugins/super-forms/uploads/php/files/mhicr3vhoujnj81hc7puklm8do/19922528299.pdfIn PDF document text
    • http://onlineexpert.in/userfiles/file/15333056029.pdfIn PDF document text
    • https://csom.cz/wp-content/plugins/super-forms/uploads/php/files/fa49aaa599c1a16d1a43615aeed84dfb/zupemi.pdfIn PDF document text
    • https://husvagnsexpo.se/wp-content/plugins/formcraft/file-upload/server/content/files/1606d43818ecc9---41984776930.pdfIn PDF document text
    • http://www.korayozelguvenlik.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e4beec2789---28362457725.pdfIn PDF document text
    • https://www.ideaklinik.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16084248913c11---49082311253.pdfIn PDF document text
    • https://abril.pe/wp-content/plugins/super-forms/uploads/php/files/8gie1asoukli3a1jkb6ned3fvi/90756578303.pdfIn PDF document text
    • http://cpgny.com/userfiles/files/61181828638.pdfIn PDF document text
    • http://slanfusa.org/clients/47225/File/37675662904.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=status+about+feeling+alonePDF 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_off0000f036.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF036 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001084d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1084D 10604 bytes
SHA-256: 0bb7aa1cc7b6fee1c1ac297b01c4fe560e6c7e8bc32d6817a0baae35e8e68ffe
font_02_sfnt_off000120a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120A4 17536 bytes
SHA-256: e5334c59c6b87630a1af92ec360407b0c3f557e4311100bab2ed598381fbb483

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