Malicious PDF — malware analysis report

Static analysis result for SHA-256 d456b27ae9f6eb9a…

MALICIOUS

PDF

72.3 KB Created: 2021-09-06 04:29:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 0dc623af6e6ef08fd2ce7fd78bcbb266 SHA-1: 287bc0f34998731c5d02e88108eabbfbf4df356d SHA-256: d456b27ae9f6eb9afc227d179c658de4824611c954062f09b5e692a6579ec0e4
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains embedded JavaScript and presents a link farm designed to redirect users to various PDF files, masquerading as free shed plans. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of using disposable hosting and SEO-focused redirection, while 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' suggests the use of compromised websites for hosting. The embedded JavaScript likely facilitates the redirection or further malicious actions.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://autosoftware.company/autoresponders_images/files/65957205962.pdf In PDF document text
    • https://bloomland.com/sites/bloomland.com/files/95971534815.pdfIn PDF document text
    • https://yuktiedu.com/wp-content/plugins/super-forms/uploads/php/files/0d919f9d41a2b4dd095941b9f85a7ebf/57511307363.pdfIn PDF document text
    • https://mercedesmazo.es/wp-content/plugins/formcraft/file-upload/server/content/files/1607de61e025ee---povevediduluxi.pdfIn PDF document text
    • http://dabaizhongxue.com/upload_fck/file/2021-5-23/20210523172907335919.pdfIn PDF document text
    • http://ohana1bbq.com/uploads/files/10213492832.pdfIn PDF document text
    • https://pikewallis.no/wp-content/plugins/formcraft/file-upload/server/content/files/1612efe82407b4---10804062924.pdfIn PDF document text
    • http://dui-antidote.com/images/userfiles/file/29291747316.pdfIn PDF document text
    • https://defi128.com/userfiles/files/porivi.pdfIn PDF document text
    • http://pretaporter-pegah.com/userfiles/file/35537782127.pdfIn PDF document text
    • http://lilit-realty.com/wp-content/plugins/super-forms/uploads/php/files/oqahfchmd1sdj43sl4l1ap91i0/gogutog.pdfIn PDF document text
    • https://na-nule.ru/wp-content/plugins/super-forms/uploads/php/files/5t6f4051d5b4tecdsgs2lngk67/kixewi.pdfIn PDF document text
    • https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/p4gmtkm4s5pt0uifhs07h0i6gp/98476480132.pdfIn PDF document text
    • https://empezo.xyz/js/ckfinder/userfiles/files/rures.pdfIn PDF document text
    • https://chaletsuenodesol.de/files/30940037489.pdfIn PDF document text
    • http://www.conectadoscomdeus.tv/arquivos/file/79493774792.pdfIn PDF document text
    • https://mandalaconfeccao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160e960b2559aa---14491764982.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160d5a96a606a0---kubosebu.pdfIn PDF document text
    • http://ural-kip.ru/admin/ckfinder/userfiles/files/reduvasufurirometagi.pdfIn PDF document text
    • http://zimaletto.com/uploads/file/zexod.pdfIn PDF document text
    • https://mudateconmigo.cl/wp-content/plugins/super-forms/uploads/php/files/bcc00a35932a14cff5dce624d542c674/47831579881.pdfIn PDF document text
    • https://strechybenesov.cz/content/vopowagiladado.pdfIn PDF document text
    • http://skipjackpoke.com/ckfinder/userfiles/files/xikud.pdfIn PDF document text
    • https://israelonthehouse.com/wp-content/plugins/formcraft/file-upload/server/content/files/16102dc70cd7d2---25065580437.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=shed+plans+free+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_off0000bad1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBAD1 16488 bytes
SHA-256: ad29a2c847fa2ec4c1333dfc18362948ddc625b3de7c99ec4c3aed2d01784094
font_01_sfnt_off0000e4b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4B7 10360 bytes
SHA-256: 1b5e134201cc0373ebda380a3982d5e18e9ffbd1261cf2b8739576057c40b3dd
font_02_sfnt_off0000fc0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC0D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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