Malicious PDF — malware analysis report

Static analysis result for SHA-256 75e3022e2a6ae48d…

MALICIOUS

PDF

88.8 KB Created: 2021-09-16 03:09:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 8e9d5c378ea37bd948ac112d9382e0a5 SHA-1: 4568d978bb1d8aca640b0dfd85c41f2051cbadd5 SHA-256: 75e3022e2a6ae48d942182b41f47dcd232a3364a3f2998129060bc6e26177cbd
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous external URIs and link farms, many hosted on compromised CMS platforms, suggesting a phishing or redirection scheme. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. While no scripts were directly extracted, the PDF structure and URL patterns are consistent with techniques used to lure users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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://archism.ru/uplcv?utm_term=finar+organic+chemistry+vol+2+pdf PDF link annotation
    • http://capitaldanceacademy.com/userfiles/files/29177141346.pdfIn PDF document text
    • https://denimder.org/resimler/files/gujurob.pdfIn PDF document text
    • http://banglatalkies.com/dynamic-images/cms/file/16550877627.pdfIn PDF document text
    • https://gabinetpro.pl/kosmetyczka/krakow/files/sumagonomidu.pdfIn PDF document text
    • https://binhruamuinanobac.com/wp-content/plugins/super-forms/uploads/php/files/tf25lur36r06f7eehbklbphbg5/voxevebikubexexumax.pdfIn PDF document text
    • https://ilexgold.com/app/webroot/files/userfiles/files/4074313751.pdfIn PDF document text
    • https://printsolutions.printsolutions.bg/uploads/wysiwyg/files/45481473225.pdfIn PDF document text
    • http://nguyenthaotech.com/upload/files/88578150815.pdfIn PDF document text
    • https://balance-global.com/wp-content/plugins/super-forms/uploads/php/files/q5uecpd63f2mbfhll7obv4avt4/tozasarov.pdfIn PDF document text
    • https://maloneslandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613984757242a---3474761825.pdfIn PDF document text
    • http://czernavendeghaz.hu/admin1/file/menesurapokazimirumukedo.pdfIn PDF document text
    • http://goodlack.cz/userfiles/file/wubovajagidudevora.pdfIn PDF document text
    • https://aradovan.com/userfiles/file/xakuxura.pdfIn PDF document text
    • https://cordovajewelry.com/images/file/49235648897.pdfIn PDF document text
    • https://whitesal.com/data/images/file/3788_20210905150947.pdfIn PDF document text
    • https://tese.in/ckfinder/userfiles/files/mokezelokujox.pdfIn PDF document text
    • http://zpkprzemysl.pl/ckfinder/userfiles/files/gurelunelibanipupu.pdfIn PDF document text
    • http://eastindiaspray.com/suvra/eastindia_spray/files/22575840696.pdfIn PDF document text
    • http://uniradioweb.info/userfiles/file/kezuvuwowuzojer.pdfIn PDF document text
    • https://prana.video/wp-content/plugins/super-forms/uploads/php/files/365ijck9ht99rf1dm55fc51uik/42591259585.pdfIn PDF document text
    • http://ljjxmining.com/uploadfile/file///2021091414453715.pdfIn PDF document text
    • http://theclubburger.com/uploads/files/22923742348.pdfIn PDF document text
    • https://theloneranger.tv/clients/loneranger/ckfinder/userfiles/files/segefonazovetuzozalixaxi.pdfIn PDF document text
    • 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_off0000ee3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE3D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001064f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1064F 19936 bytes
SHA-256: aa153fdb176f0e3a67465760ff2cd960d19e542bd51e7f9f73fb6b4db9295bb6
font_02_sfnt_off00013b61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B61 11344 bytes
SHA-256: d4f16f391c14ecdbe75c42e66a04d64426233e21be56a33304e5d61b78533228

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