Malicious PDF — malware analysis report

Static analysis result for SHA-256 2932ff942648f431…

MALICIOUS

PDF

84.2 KB Created: 2021-09-12 09:06:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: e9b150334d05cd7b3f179f525f59c19d SHA-1: 1e8032c1bd8c5deaa1a582ec3f92be8516f15122 SHA-256: 2932ff942648f431133de7e5cb1da45c2e962c1a810cac47c620abd983760837
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link farm hosted on multiple websites, including compromised CMS uploads, which is a common technique for distributing phishing lures or malware. The ML classifier and ClamAV detection strongly indicate malicious intent. No scripts were extracted, but the presence of numerous URLs pointing to potentially malicious content is the primary indicator of compromise.

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://lorenzonimmigrationlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/16130d5e754bc1---89243600447.pdf In PDF document text
    • https://www.lokalesichtbarkeit.de/wp-content/plugins/super-forms/uploads/php/files/en6fv6v7f3cbj91289ag8i1u03/76140387236.pdfIn PDF document text
    • https://indicaperu.com/userfiles/file/vusifozebuv.pdfIn PDF document text
    • http://vietkinggroup.com/uploads/userfiles/file/nigel.pdfIn PDF document text
    • https://www.info-service.com.tw/plugin/ckeditor/ckfinder/userfiles/files/53569296542.pdfIn PDF document text
    • http://bolt.fo/public_html/userfiles/files/7132304831.pdfIn PDF document text
    • https://lynnesnaturaltreats.com.au/wp-content/plugins/super-forms/uploads/php/files/afda445e8b9756243eb6f56be44f5a00/34654985359.pdfIn PDF document text
    • http://www.grundys.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1613b08e43349f---29535855615.pdfIn PDF document text
    • http://rlangkhan.com/upload/userfiles/files/7381129816.pdfIn PDF document text
    • http://pzhjintai.com/upload/files/dudejobuwiwebisozi.pdfIn PDF document text
    • https://crownprolaw.cn/userfiles/Proj_Name/files/80148764422.pdfIn PDF document text
    • http://tai-group.com/upload/files/99198707168.pdfIn PDF document text
    • http://www.syrahresources.com.au/application/third_party/ckfinder/userfiles/files/28234450581.pdfIn PDF document text
    • http://arniestribu.com/campannas/file/47594844465.pdfIn PDF document text
    • https://hiperaktivite.info/userfiles/files/jetiras.pdfIn PDF document text
    • http://mybyblos.com/userfiles/file/94971069207.pdfIn PDF document text
    • http://yenidenyuzlendirme.com/ckfinder/userfiles/files/29492594085.pdfIn PDF document text
    • https://xtremefitness.com.au/application/third_party/ckfinder/userfiles/files/23842560800.pdfIn PDF document text
    • http://adhunikjewellers.com/ckfinder/userfiles/files/muxek.pdfIn PDF document text
    • http://373113.linker.tw/files/puwetunefisoxoko.pdfIn PDF document text
    • http://srihemkuntschoolint.com/slbdavbatala/userfiles/file/rezegisoligotuninenixu.pdfIn PDF document text
    • http://security-m.jp/tool/images/file/nimodus.pdfIn PDF document text
    • http://citra.cl/userfiles/file/litumuv.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=how+to+delete+applications+on+firestickPDF 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_off0000e0bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0BD 18944 bytes
SHA-256: 3188681be699d791ec22e9e5639cd4e361af73f79be1bb1aedfb2b92188eed97
font_01_sfnt_off000111c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111C2 10784 bytes
SHA-256: 7bd40b2e35ccfa4e5065b23294800c69b8ef0695b136f394868c741d18d8f302
font_02_sfnt_off00012ab8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12AB8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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