Malicious PDF — malware analysis report

Static analysis result for SHA-256 0935e9de1543bc16…

MALICIOUS

PDF

109.6 KB Created: 2021-06-27 17:24:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 72367e051d334b85b7a4c413bcb0f74e SHA-1: ae50ff6ce24333a8f5850311b2909f45ca98e8bf SHA-256: 0935e9de1543bc166c5b6b713b8c5d647869ad5efd2558b924c3ba7e9a25d90f
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many of which point to compromised websites or disposable hosting, indicating a phishing or malicious redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The document's structure as a link farm is consistent with attempts to lure users to malicious sites, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9666

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://blueridgelightingandcontrols.com/wp-content/plugins/super-forms/uploads/php/files/87705c39d41960c9db6b45677f4eeee5/niniribazod.pdf In PDF document text
    • http://phuquytravel.com/nguyenvanlinh/files/80183393683.pdfIn PDF document text
    • http://kasystemofkarate.com/clients/861259/File/1387325300.pdfIn PDF document text
    • http://skyline1968.com/clients/74864/File/pawixopoxusalibasu.pdfIn PDF document text
    • http://polymer-optix.de/userfiles/file/25080013435.pdfIn PDF document text
    • http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/880jr8j2dvso8i91iqncqqrm72/lupamatonetuwebaw.pdfIn PDF document text
    • https://saam.vn/images/content/file/zudalaz.pdfIn PDF document text
    • https://rrvchefs.com/wp-content/plugins/super-forms/uploads/php/files/0647981821da0871fa320ce2dd13ec61/40810156620.pdfIn PDF document text
    • http://abc-tel.ru/data/File/disexofubub.pdfIn PDF document text
    • https://fultoys.com/userfiles/99032040457.pdfIn PDF document text
    • https://www.cedicar.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085adba06a98---labururoma.pdfIn PDF document text
    • https://www.hauptsache.cc/wp-content/plugins/formcraft/file-upload/server/content/files/1609b6bc89b615---vibivowulawujebu.pdfIn PDF document text
    • https://mziagroup.com/wp-content/plugins/super-forms/uploads/php/files/7gsm1025s8cdntlg9mkue868ea/55427077600.pdfIn PDF document text
    • http://crmloccitanecr.com/campannas/file/37850928092.pdfIn PDF document text
    • https://edukiya.com/wp-content/plugins/super-forms/uploads/php/files/192a3c2740b673d06133d952a4045c5d/rojaj.pdfIn PDF document text
    • https://www.tangelo.no/wp-content/plugins/formcraft/file-upload/server/content/files/1606cf07969a13---sevemogupojirodibusakujex.pdfIn PDF document text
    • https://llsindia.in/FCKeditor/file/pegiv.pdfIn PDF document text
    • https://bravo-hk.com/userfiles/file/posemuxosirereriselexoj.pdfIn PDF document text
    • https://gfow.om/wp-content/plugins/super-forms/uploads/php/files/fss16ragf17j3liaf4anffq5mu/suzubolijalufefaviji.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160add7f802a93---75025954019.pdfIn PDF document text
    • http://afghansolar.com/userfiles/file/mebodipadudibedolalilu.pdfIn PDF document text
    • http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/hb9lc01v2hnq4ct9t2jejjfam0/bapalaz.pdfIn PDF document text
    • https://staffxrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/6d7c500e7617782cc39fa81116953455/jatok.pdfIn PDF document text
    • https://traveltokiev.com/wp-content/plugins/super-forms/uploads/php/files/ci7ak9465k59bci1irvlql7bi7/mawekopijemudaxatutase.pdfIn PDF document text
    • http://adria-ex.com/images/blog//file/lebelakopakufurigare.pdfIn PDF document text
    • https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/160946a85f024a---wikometipibeb.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=philosophy+dictionary+onlinePDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013060.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13060 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00014872.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14872 17800 bytes
SHA-256: 1bff0393c13421dae3f97b410251c1adb25a7c066d0807b076f6d23c5f0f3cca
font_02_sfnt_off00017760.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17760 16544 bytes
SHA-256: 66b7945b99a9c78025a9a0ace4161995b24b08b80ea391fd428eddc3553bac27
font_03_sfnt_off00018e24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18E24 10724 bytes
SHA-256: 364362eb093be00498f5051e626ccb8352b6151f71b773ebedcf5dd456f0a005

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