Malicious PDF — malware analysis report

Static analysis result for SHA-256 aecdc02682ea0044…

MALICIOUS

PDF

82.2 KB Created: 2021-08-16 13:36:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: ad1404dbe4127ef2e55791f58b195735 SHA-1: f1c6951a7bb4f7e2330572d627793dbbcff4d924 SHA-256: aecdc02682ea00444d3fa88fd1eb1f0b73659ae86ceb70c3d86eaba1a6647bf3
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm pointing to compromised CMS uploads and disposable hosting, suggesting a phishing or malware distribution scheme. The embedded URLs, particularly those hosted on compromised WordPress sites, are likely used to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

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://ophirtonhotel.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160870d6eb2f42---ramofuwikekakumuwuferuxuj.pdf In PDF document text
    • http://arablift.net/userfiles/file/giwis.pdfIn PDF document text
    • https://polnische-zaune.de/userfiles/file/25523968870.pdfIn PDF document text
    • https://aadhaarretail.com/administrator/imagetemp/file/17919158622.pdfIn PDF document text
    • https://www.18fire.com/wp-content/plugins/super-forms/uploads/php/files/41021a59f09d57196bf05af202994b48/ralaferozovax.pdfIn PDF document text
    • https://evocative.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1608398a8cee68---kotujoru.pdfIn PDF document text
    • http://peusch.lu/userfiles/files/renusidajuzivute.pdfIn PDF document text
    • https://watfordfairtrade.org/app/webroot/img/files/44480939083.pdfIn PDF document text
    • https://maviet.vn/upload/files/43971524383.pdfIn PDF document text
    • http://bogelaipigeon.com/upload/file/tevama.pdfIn PDF document text
    • https://tamtam.com.ua/wp-content/plugins/super-forms/uploads/php/files/c216236bc615824c4a0c884689a04010/34531930276.pdfIn PDF document text
    • http://colafranceschi.it/userfiles/files/sevubuwidez.pdfIn PDF document text
    • https://ozmutludokum.com/userfiles/file/duvurekedowavarerubiki.pdfIn PDF document text
    • http://unipell.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c6759b0d9be---59799996365.pdfIn PDF document text
    • http://www.canadavisaservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073f4927b571---79186250172.pdfIn PDF document text
    • http://vipavtoufa.ru/wp-content/plugins/super-forms/uploads/php/files/ec012108ee1da0c34007c4eb1078caa2/nevegabusinipilegubinoso.pdfIn PDF document text
    • http://wignaccent.com/FCKeditor_2.6.3/userimages/file/20210615054646.pdfIn PDF document text
    • https://www.lamuccacompany.com/wp-content/plugins/super-forms/uploads/php/files/ca59406c7764da084db418a4370e8319/janurorij.pdfIn PDF document text
    • http://taxfreepoint.com/file/93328689986.pdfIn PDF document text
    • https://40parables.com/wp-content/plugins/super-forms/uploads/php/files/c0042b214ee172f2c9126ba5a4d4df01/7225096752.pdfIn PDF document text
    • http://xn--b1ahhafccpgkb2bxo.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/0db3b01508dd30d30f477294cccbea56/11402429961.pdfIn PDF document text
    • https://coloreverything.love/wp-content/plugins/super-forms/uploads/php/files/0d2af74176b4220b4d8a407a22721ad2/59908494488.pdfIn PDF document text
    • http://agisinfo.ru/uploads/content/files/85023147052.pdfIn PDF document text
    • https://janeunchained.com/wp-content/plugins/super-forms/uploads/php/files/hi2aj0oemuuv0kjan0g49l5hqn/31040611454.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=ansar+battalion+job+circular+2018+pdf+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_off0000d79c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD79C 17132 bytes
SHA-256: e01343c961ebf8ed85f8e52d51dae36cc1f65274d04bad6343af285998c3ddce
font_01_sfnt_off00010489.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10489 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011ca0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CA0 11420 bytes
SHA-256: ef3558771431ebb1b122b0972c6d68f48b45516e57021e7e7be382ba73f3a3a0

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