Malicious PDF — malware analysis report

Static analysis result for SHA-256 352918b63ea5ebb3…

MALICIOUS

PDF

78.0 KB Created: 2021-07-06 20:33:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: d9f7ddc7a1c181b805476f6849de622b SHA-1: f59fa57a6587a2d6e0d168c34a154832a0cb9cfd SHA-256: 352918b63ea5ebb315b96cb9e14e5e46c13361f2c9e3619510144c4292b1080c
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm with numerous URLs pointing to potentially compromised websites or disposable hosting, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with malicious documents designed to lure users to external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9958

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 http://centronegozi.com/public/rufobuxek.pdf In PDF document text
    • http://bettynblue.com/upload/fck_img/20210530/file/4280665313.pdfIn PDF document text
    • https://vinisfarm.com/wp-content/plugins/super-forms/uploads/php/files/d28870ea279bfc2d3e534d304deb5f0e/11632003763.pdfIn PDF document text
    • http://auto-spec.ca/fck/file/87711792561.pdfIn PDF document text
    • http://massimomoroni.it/userfiles/files/zakafafo.pdfIn PDF document text
    • http://hyundailed.com/upload/editor/file/45421092370.pdfIn PDF document text
    • http://orchid-daikanyama.com/userfiles/file/pupowakizoxinadewofakumud.pdfIn PDF document text
    • https://loan-financial.com/wp-content/plugins/super-forms/uploads/php/files/3a1036aa28b65fbce4df7f3b5fcc1150/53407903789.pdfIn PDF document text
    • http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/30936biml21g52mpvpb7quais0/babujefuvekefeje.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607022ae6dc0b---favanidarozozinagozix.pdfIn PDF document text
    • https://licorne-hotel-restaurant.com/userfiles/file/wivinej.pdfIn PDF document text
    • http://beastyenergy.com/userfiles/file/mopox.pdfIn PDF document text
    • https://www.sabiamente.es/wp-content/plugins/formcraft/file-upload/server/content/files/1608ba5b30081d---3546165215.pdfIn PDF document text
    • https://www.fecomerciomg.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/16074a34144e43---bofenavogogibamu.pdfIn PDF document text
    • http://mulroyenvironmental.ie/userfiles/file/xejoregizurida.pdfIn PDF document text
    • http://yaqeen-eg.com/userfiles/file/kemelazuwapudarafu.pdfIn PDF document text
    • http://www.kocay.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160924c775a5a1---pesiwijo.pdfIn PDF document text
    • http://anhuizhkj.com/upload_fck/file/2021-6-13/20210613143123630952.pdfIn PDF document text
    • http://oneself.pro/wp-content/plugins/formcraft/file-upload/server/content/files/160989775ca5a6---18580492799.pdfIn PDF document text
    • https://landlorddebtadvisory.com/wp-content/plugins/super-forms/uploads/php/files/j4aegba0fg6tf4hp30t8s10up1/81850583871.pdfIn PDF document text
    • http://asckhn.com/acskhn/userfiles/file/ruxoj.pdfIn PDF document text
    • https://torrentclub.vip/wp-content/plugins/super-forms/uploads/php/files/8iqrflj7euu8s4i5s05tc7v9uu/64667000761.pdfIn PDF document text
    • https://deepankarbasu.com/FCKeditor/file/29205143318.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=san+marco+argentano+hotelsPDF 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cec0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEC0 10660 bytes
SHA-256: bf4fe0210c8dc831883acf7e7009265acd95b26b9ec74b235ffc1ea15eeb5bb5
font_01_sfnt_off0000e6f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6F8 16356 bytes
SHA-256: 3b02257d4fcbf27b1ad05722ae03dcea337b135bbf59bc22d035b4e1e755667b
font_02_sfnt_off00011135.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11135 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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