Malicious PDF — malware analysis report

Static analysis result for SHA-256 6cab3fcc3b4e6d37…

MALICIOUS

PDF

96.1 KB Created: 2021-06-27 02:27:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: 96c5182488f6a24da38b1ef31a1a0fee SHA-1: d432f4dda35fc4ab48e3bd27d316d5e40350ae58 SHA-256: 6cab3fcc3b4e6d37eb6f13798eab0da13e100cfa664c1b9f1ea3d491a6e19722
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, containing numerous URLs pointing to compromised WordPress upload directories and disposable hosting sites. The presence of these links suggests the document is designed to redirect users to malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9768

Heuristics 6

  • 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.
  • 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://laborke.ru/uplcv?utm_term=lionel+richie+and+shania+twain PDF link annotation
    • http://sklepjola.pl/userfiles/file/pupozaduzozegum.pdfIn PDF document text
    • http://wanyuantemple.tw/userfiles/file/45522179089.pdfIn PDF document text
    • http://wbbray.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b53d77deaa---67754231541.pdfIn PDF document text
    • http://projectbudapest.hu/wp-content/plugins/formcraft/file-upload/server/content/files/1609867f98a49e---buwevikexaduzenetibijuwo.pdfIn PDF document text
    • https://benjamindreyer.com/wp-content/plugins/super-forms/uploads/php/files/b919ca1796bbbc008fea4a4d97a14701/87180446726.pdfIn PDF document text
    • http://opalbiosciences.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cf4991cc75b---10316896282.pdfIn PDF document text
    • http://goref.ru/files/file/wolipiwomazul.pdfIn PDF document text
    • https://cristalensi.com/public/File/18069487051.pdfIn PDF document text
    • http://nt-module.ru/ckfinder/userfiles/files/xuwitoka.pdfIn PDF document text
    • https://ipcare.nl/wp-content/plugins/super-forms/uploads/php/files/uv907ui4pg9h7q223n650q08fb/46482614683.pdfIn PDF document text
    • https://www.teppiche-waschen-hamburg.de/wp-content/plugins/formcraft/file-upload/server/content/files/160721e637a5d1---memejubogebakosom.pdfIn PDF document text
    • https://sasalidayanisma.org/uploads/file/41848053528.pdfIn PDF document text
    • https://www.elementstraining.co.uk/wp-content/plugins/super-forms/uploads/php/files/muqqdsdag2dajh3dkdt8m0cvk0/3789853627.pdfIn PDF document text
    • https://speeddating.lt/speeddating/ckfinder/userfiles/files/22743136680.pdfIn PDF document text
    • https://mymovingestimate.com/wp-content/plugins/super-forms/uploads/php/files/2616bb7c650f6efed42f9388bb3c1844/vavasetize.pdfIn PDF document text
    • http://bycongroup.com/UserFiles/file/gesoduzuwofewevisip.pdfIn PDF document text
    • https://nowackleverkusen.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b997a1d8dc1---80124927607.pdfIn PDF document text
    • http://www.kreasoft.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160d2078cc30b2---55143369062.pdfIn PDF document text
    • http://gld-lining.com/user_img/files/40003158360.pdfIn PDF document text
    • https://rux-thai.com/ckfinder/userfiles/files/xegoroso.pdfIn PDF document text
    • https://precisionautoandac.com/wp-content/plugins/super-forms/uploads/php/files/e147ba320731cf3cfa84e9fba28589cd/rawosigejun.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160867676f23a6---19567181019.pdfIn PDF document text
    • http://www.esthemed.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160b9758800692---vilitaliguxiwinuwimal.pdfIn PDF document text
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/7d306a864ad5434dd8561c67d4d66990/famusenanedumugotak.pdfIn PDF document text
    • https://webgirls-studio.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b05c18d93ff---74901953196.pdfIn PDF document text
    • https://www.andyselfstorage.co.uk/wp-content/plugins/super-forms/uploads/php/files/94v4d9p9u16o6oifkrjj1sirts/23396146956.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010a2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A2B 18352 bytes
SHA-256: bf5b66f748947c1c7f0ffdc377f048402cdcab121ff47397c4d9c8ddb828115c
font_01_sfnt_off000139d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x139D1 1856 bytes
SHA-256: 184a936bd1ce5dff700adc4e6a12c67a52a21ba3f6bd4f31defed58e18ed8b92
font_02_sfnt_off0001427a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1427A 10512 bytes
SHA-256: bbec35e1d6ff4220887127ef632d1821af303360b1dcaf211653c43cd1fb1ac7
font_03_sfnt_off00015a59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15A59 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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