Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc2b304dbc890ea0…

MALICIOUS

PDF

72.9 KB Created: 2021-09-07 17:47:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 6f6f13f650eae73931ffece73f043a26 SHA-1: 42310e713dcd1312c6701eb7bdeee8ad2a9089c8 SHA-256: dc2b304dbc890ea0b780ac55e21e1245c33fcd4119eba4af74ea7c349f3429fe
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 websites that appear to be compromised CMS uploads. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or redirecting users to malicious content. The file's structure and URL patterns are consistent with a link farm designed to distribute traffic across multiple domains, potentially for SEO manipulation or to evade detection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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://network-italia.com/file/71807118527.pdf In PDF document text
    • http://metrocars.london/survey/userfiles/files/jezawizakavuzubowupob.pdfIn PDF document text
    • http://limpiasol.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096a5f956955---legisigorarematemej.pdfIn PDF document text
    • http://dmn.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16097f6fadd92d---64085978427.pdfIn PDF document text
    • http://falconartistmanagement.com/ckfinder/userfiles/files/zitavolanokob.pdfIn PDF document text
    • http://caacoding.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a4a29749261---bopubajigawiguwimoka.pdfIn PDF document text
    • https://cmetrix.net/ckfinder/userfiles/files/54407030071.pdfIn PDF document text
    • https://www.idahomedia.com/wp-content/plugins/super-forms/uploads/php/files/dd1f0f80ccd5bde131cff2cded84bbe7/26396669301.pdfIn PDF document text
    • https://namastehealth.in/wp-content/plugins/super-forms/uploads/php/files/btc71co1op0vn96c5q9ch4apsi/21420461583.pdfIn PDF document text
    • http://dges.in/userfiles/file/1741680233.pdfIn PDF document text
    • http://d4sontario.com/clients/e/ed/ed023a0734c265ca673a92d1d81de675/File/jewipofawabanonenawozi.pdfIn PDF document text
    • https://bilegt.mn/userfiles/files/92513840900.pdfIn PDF document text
    • http://fotografieindex.nl/images/uploads/61951515647.pdfIn PDF document text
    • https://namastehealth.in/wp-content/plugins/super-forms/uploads/php/files/dpo362rf4uvf5esvdvfsg5re4u/98253185207.pdfIn PDF document text
    • http://funperm.ru/content/file/tiselutakakojivuvus.pdfIn PDF document text
    • http://www.cavice.fi/tiedostot/files/77840161198.pdfIn PDF document text
    • https://www.darrellstuckey.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d251eb0c27b---lofilezopuwas.pdfIn PDF document text
    • http://www.tif.cn/wp-content/plugins/super-forms/uploads/php/files/vi47shvk0mochv0dmagnq6kvlp/negibuwew.pdfIn PDF document text
    • http://englandmatchshirts.com/assets/file/divivuponeralu.pdfIn PDF document text
    • http://biafrapol.pl/pliki/file/59173294824.pdfIn PDF document text
    • http://heibldr.hu/FCKfeltoltott/file/9927943056.pdfIn PDF document text
    • http://ukrfirework.com/images/file/xigufulevifu.pdfIn PDF document text
    • http://www.appsolutely.sg/wp-content/plugins/formcraft/file-upload/server/content/files/160a4b8b4a78d5---12555581992.pdfIn PDF document text
    • https://dmddsgn.com/wp-content/plugins/super-forms/uploads/php/files/8910e79bfb449db6c697e1ba0420292f/56512371613.pdfIn PDF document text
    • https://drainscovers.com/wp-content/plugins/super-forms/uploads/php/files/8e592164a5502135f9c4d384d2c948ca/48347898521.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=gathas+in+english+pdfPDF 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_off0000b7a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB7A4 10596 bytes
SHA-256: cb303afff5e176933c7cbd27d26ffb59e9423dfbc613b9b4cd27d192a623755e
font_01_sfnt_off0000cf8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF8D 18272 bytes
SHA-256: 9c0c76bae913ba0d083a30e3468e890f89f10d75c1b9d329648cec9c43024072
font_02_sfnt_off0000fe19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE19 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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