Malicious PDF — malware analysis report

Static analysis result for SHA-256 32d98e48d753ef4e…

MALICIOUS

PDF

86.7 KB Created: 2021-09-09 01:06:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 32fe5091d1823a5ef6629cae62568b62 SHA-1: f4c14a48b3b41d71cb8b500b7add13f905e6991b SHA-256: 32d98e48d753ef4e140689c9fed6775fc8e10a2fcc06519c8e3bc8766dff3ce1
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links, many pointing to compromised CMS uploads or disposable hosting, suggesting it functions as a link farm to distribute malicious content. The presence of embedded URLs and the PDF structure itself are indicative of a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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://hulstcustoms.ru/uploads/files/xosoposo.pdf In PDF document text
    • http://prospekt-rostov.ru/ckfinder/userfiles/files/gafesidajo.pdfIn PDF document text
    • https://hsegroup.ru/wp-content/plugins/super-forms/uploads/php/files/qc2i0nlmfm7uibqms389jcc291/54320306071.pdfIn PDF document text
    • http://olympicthesportshop.in/uploads/zovavoponanari.pdfIn PDF document text
    • http://pho32shabu.com/uploads/files/buwosukupefafeb.pdfIn PDF document text
    • https://nailseasupportgroup.com/wp-content/plugins/super-forms/uploads/php/files/69a4204a121e8fabfd75c75e30673605/38970883072.pdfIn PDF document text
    • http://master-vin.ru/files/file/56757051569.pdfIn PDF document text
    • http://cheers-gifts.com/userfiles/lorujifuxi.pdfIn PDF document text
    • http://kidneytracker.com/ckfinder/userfiles/files/geriwu.pdfIn PDF document text
    • http://www.shipsupply.co.mz/wp-content/plugins/formcraft/file-upload/server/content/files/1612fb6f41414f---67413558402.pdfIn PDF document text
    • http://denki-shonan.com/uploadsfile/jewogadededetowabezibujoj.pdfIn PDF document text
    • http://delannahotel.com/user_img/file/fivosurigijuv.pdfIn PDF document text
    • http://nousgarage.com/userfiles/file/29684809173.pdfIn PDF document text
    • http://nexxosrealty.com/userfiles/files/27291468682.pdfIn PDF document text
    • http://eraldocomo.it/userfiles/files/wowobenepanikixevim.pdfIn PDF document text
    • http://seamacros.com/upload/file/rugudelusasajukuxase.pdfIn PDF document text
    • http://autoset66.ru/admin/ckfinder/userfiles/files/79589074920.pdfIn PDF document text
    • http://kangmeideyiliao.com/uploadfile/file///2021090117035554.pdfIn PDF document text
    • http://njchemland.com/upload/files/23240846457.pdfIn PDF document text
    • https://areshin.ru/wp-content/plugins/super-forms/uploads/php/files/a57ab8c0de144c87e11e5b9a140e3a5e/42126602652.pdfIn PDF document text
    • http://osayit.com/images/file/55431724340.pdfIn PDF document text
    • https://garraldaarquitectura.com/garralda_userfiles/files/98026190930.pdfIn PDF document text
    • http://elfobchod.cz/foto/Image/file/30984139449.pdfIn PDF document text
    • https://almuhja.net/ckfinder/userfiles/files/dekupaxaxare.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=ultimate+brain+booster+apk+free+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_off0000eb7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB7D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010394.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10394 10984 bytes
SHA-256: 6caa8a00c310644c89f00cb8777085f8888bdbc0290f72629d9962496a865dce
font_02_sfnt_off00011ce5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CE5 18652 bytes
SHA-256: 4ffd32217fe8f05d1cc67738c9b63946b545366c78bff56df58dfd3a4c7d2b2a

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