Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7a2e86054ffa693…

MALICIOUS

PDF

91.8 KB Created: 2021-07-23 06:55:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 198ec254deeaf3bbc12234c361953ebe SHA-1: 57e9272cbccb5d5203c820c4ffa2e0b13aaf4164 SHA-256: d7a2e86054ffa693b0b93d402a61c1819c407a6f8ea5befb70eb18e7ae949676
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains a link farm pointing to compromised WordPress upload storage, suggesting it's part of a phishing or malware distribution scheme. The embedded URLs, such as http://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab36b1d48a9---41996488351.pdf, are likely used to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9970

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://hotelristorantenovecento.it/wp-content/plugins/super-forms/uploads/php/files/31ea26a6eac7eefc5ee3a7b8a8def9e5/22648959828.pdf In PDF document text
    • http://lushexperiences.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab36b1d48a9---41996488351.pdfIn PDF document text
    • https://www.criteriainvest.com.br/wp-content/plugins/super-forms/uploads/php/files/kbubfu3stm19ftip0s8j6jmjcs/xiboxa.pdfIn PDF document text
    • http://training-solutions.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608d5212556d3---bogen.pdfIn PDF document text
    • http://asdgolfclubtoscana.com/writable/public/userfiles/file/jetokobafewulanakonos.pdfIn PDF document text
    • https://udachi.co.th/wp-content/plugins/super-forms/uploads/php/files/oe59tqrqrf1c8r2el3aoue7g5j/92771638732.pdfIn PDF document text
    • https://valserve.in/web/k/main_admin/ckfinder/userfiles/files/33804439372.pdfIn PDF document text
    • https://coachtourbusrental.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082a4c56ae9a---kemuwitegufotepapaki.pdfIn PDF document text
    • https://traveltokiev.com/wp-content/plugins/super-forms/uploads/php/files/isu7a69fff0gg99ipvhsmmd9s1/fejebarasawefowuxaj.pdfIn PDF document text
    • https://zoomkish.com/basefile/zoomkishcom/files/rifuz.pdfIn PDF document text
    • https://www.tessilgiada.it/wp-content/plugins/formcraft/file-upload/server/content/files/16075d300dcf62---lapodaviwuzeli.pdfIn PDF document text
    • http://www.guaitoli.eng.br/wp-content/plugins/formcraft/file-upload/server/content/files/16077a3c935eb0---patobavulixikutatopiluka.pdfIn PDF document text
    • http://jiendurancecoaching.com/ckfinder/userfiles/files/21740549484.pdfIn PDF document text
    • http://digitaldaya.com/imagenes/file/19085458591.pdfIn PDF document text
    • https://buka.ru/sadm_files/dagubem.pdfIn PDF document text
    • http://kururlaub-ungarn.de/bilder/files/46078486795.pdfIn PDF document text
    • https://mannerfeltdesignteam.se/ckfinder/userfiles/files/vavogajabukarurokesitele.pdfIn PDF document text
    • https://maugli24.ru/wp-content/plugins/super-forms/uploads/php/files/4e9ea306f5d3045404422a0c1b258c30/xixodulado.pdfIn PDF document text
    • https://www.straightmyteeth.eu/wp-content/plugins/super-forms/uploads/php/files/75523c274954c0809b0272f758ab8027/fuziguzovedukisoneg.pdfIn PDF document text
    • https://securityguardsupply.org/php/uploads/file/dokipomiluvinimenujek.pdfIn PDF document text
    • http://longthinhphat.net/uploads/files/dazekanikugalu.pdfIn PDF document text
    • https://acethamessecurity.co.uk/wp-content/plugins/super-forms/uploads/php/files/1cf5141806357ccffd27bbabb1f2adcf/kitujax.pdfIn PDF document text
    • http://vpecargo.com/userfiles/file/dokogepapajaxizikonebot.pdfIn PDF document text
    • http://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b804526a41c---wetevalefabibijaginowim.pdfIn PDF document text
    • https://ilcaminodaugo.it/file/jalobokafuvofom.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=taxiwala+movie+download+in+tamilrockersPDF 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_off000101dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101DD 10840 bytes
SHA-256: 39ec071dd437bc424e9cd2553f787bd892fdf20fd59dced9b9388e4efcc79e48
font_01_sfnt_off00011aee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AEE 17284 bytes
SHA-256: 85bc476a2ac47758b066b1c0e32fbb2f0c7266a6a39e76fe8e99545ea601075b
font_02_sfnt_off0001481a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1481A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1