Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f47358f6c9939bd…

MALICIOUS

PDF

95.9 KB Created: 2021-09-06 01:43:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 6341c6154a0fa8166151eb11fd1351da SHA-1: 97cc62ce0f1038843538df83d7e307c3d15fe887 SHA-256: 1f47358f6c9939bdf04e48672dc3ec1d24b6666481f25b63b19a212f82849a74
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many of which point to compromised WordPress sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to phishing or malware distribution sites. The file's structure as a link farm suggests it's part of a broader phishing or credential harvesting campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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://kachhiproperties.com/wp-content/plugins/super-forms/uploads/php/files/c74f6def77e3a5aa75159c629cc396ae/pilutidugijor.pdf In PDF document text
    • https://ceilford.org/wp-content/plugins/super-forms/uploads/php/files/966dd3f4861419276be8f9067eed80e1/37201123864.pdfIn PDF document text
    • https://rlvanstory.com/wp-content/plugins/super-forms/uploads/php/files/a543e392f5804d3c838e58ba39f45135/livojisari.pdfIn PDF document text
    • http://amdind.com/userfiles/file/xabojiv.pdfIn PDF document text
    • https://gbeequestriansurfaces.com/wp-content/plugins/super-forms/uploads/php/files/fbpmu8phjf9qeruj4ejl24k07j/xasulenararugete.pdfIn PDF document text
    • http://robbinsfamilyhealthcare.com/clients/2/2c/2c787fa606fc56c3a3a24dfc5409695f/File/84597445336.pdfIn PDF document text
    • http://buyyoutubesubscribers.com/ci/userfiles/files/73879207805.pdfIn PDF document text
    • http://michael-dhom.com/webseiten/file/xunawonodo.pdfIn PDF document text
    • http://refah4ter.info/basefile/hotelrefah4terir/files/sowanokug.pdfIn PDF document text
    • http://weddingdiy.cc/uploadfiles/files/20210703_224216_2571.pdfIn PDF document text
    • https://christianboudreau.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a870bdbe434---82628098341.pdfIn PDF document text
    • https://www.rydalmereprestige.com.au/wp-content/plugins/super-forms/uploads/php/files/cnlv36n3345kc5qu3k025boefr/sokesezeputas.pdfIn PDF document text
    • http://technology-mp.it/userfiles/files/44429971173.pdfIn PDF document text
    • http://antansconstructions.com/ckfinder/userfiles/files/27621296503.pdfIn PDF document text
    • http://baovephuongtroi.com/vietkiendo/upload/file/mifulegedujosu.pdfIn PDF document text
    • https://nam.it/wp-content/plugins/formcraft/file-upload/server/content/files/160b4a78f2e359---garoruvutipazosijadigap.pdfIn PDF document text
    • http://3duct.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607302bb48889---zofalebelobesin.pdfIn PDF document text
    • https://www.amiunaorchestra.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608115e46ad5e---dapijuvaxepebov.pdfIn PDF document text
    • https://drmiamiconnect.com/wp-content/plugins/super-forms/uploads/php/files/2d01e588d152eff813cc35559d474cca/8981025019.pdfIn PDF document text
    • http://ingmontagna.com/userfiles/files/zetaluwakeva.pdfIn PDF document text
    • http://workprohealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080c4d04a335---wiwisezatob.pdfIn PDF document text
    • http://zangerlelaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/76901294557.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=immergas+victrix+tera+28+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_off0000fff4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFF4 11140 bytes
SHA-256: 086e9a43d93f9ea55e03412ef553db3e5f71b935a924368c99ade5d9e8f29f3d
font_01_sfnt_off000119ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119EE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013200.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13200 26940 bytes
SHA-256: 2c4aecacb37963c3b4ffcd8acc60985e70de3bc2aa5bb7c2322d47027cecc393

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