Malicious PDF — malware analysis report

Static analysis result for SHA-256 7034d96a2c48486c…

MALICIOUS

PDF

89.2 KB Created: 2021-07-17 04:50:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 158556377a60b4da34792987b634cce1 SHA-1: f46498c798bdb75a2216d92ef122adf84c8fb3fb SHA-256: 7034d96a2c48486c97f232f124ef0c0bb124b4546d461e4970ab0d6705c05190
156 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, suggesting a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9932

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 http://healhumanity.foundation/userfiles/file/97134315292.pdf In PDF document text
    • http://www.bandungmesin.com/file/39546660771.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608566c95b3b1---88442326837.pdfIn PDF document text
    • https://www.scanworld.se/wp-content/plugins/formcraft/file-upload/server/content/files/16074a29ba300c---13132552555.pdfIn PDF document text
    • https://www.higher-energy-trampolineclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/160edcc0420fbf---zinogudegudusi.pdfIn PDF document text
    • https://culturasiapamplona.com/guiarte_userfiles/files/nefiriwowafoloj.pdfIn PDF document text
    • http://localhomesales.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608cb38cde092---tefufizisiwor.pdfIn PDF document text
    • http://omonetach.pl/foto/ilustracje/file/93347493920.pdfIn PDF document text
    • http://www.lavalledesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c6fe283cabc---koxulonexaxunebumemij.pdfIn PDF document text
    • http://ahxxzx.com/userfiles/202106/file/95473044747.pdfIn PDF document text
    • http://www.gaviprintpack.com/wp-content/plugins/formcraft/file-upload/server/content/files/160beec360ba29---zumapibosoraf.pdfIn PDF document text
    • http://coffee33.ru/archive/file/87206922068.pdfIn PDF document text
    • https://wecafephuket.com/wp-content/plugins/super-forms/uploads/php/files/k879l0kj19ij58sgb79ku2ipdi/dujolawutibikel.pdfIn PDF document text
    • http://accomplishtheimpossible.com/userfiles_ati/file/51706158620.pdfIn PDF document text
    • https://sportli.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160ac3711021f0---64439083394.pdfIn PDF document text
    • http://johncarroll1967.com/clients/1/18/1896e795ecc2602204d707ec4e69586f/File/36072439748.pdfIn PDF document text
    • https://outsourcedbackoffice.co.uk/wp-content/plugins/super-forms/uploads/php/files/9fd8534f20412830443fc25b79a5af26/9353040146.pdfIn PDF document text
    • http://nadiadsa.org/userfiles/file/xiziwivutajasopizoxavun.pdfIn PDF document text
    • https://a2designbg.com/userfiles/file/28968599835.pdfIn PDF document text
    • https://textolinguisticsolutions.com/upload/editor/file/wuponomubitaj.pdfIn PDF document text
    • http://www.gcsystem.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1606f5a10017a2---24475315498.pdfIn PDF document text
    • http://gfb.it/upload/fck/file/fumekukojituviketadov.pdfIn PDF document text
    • http://project-st.ru/userfiles/file/64033136353.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=epigeal+germination+examplesPDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e1d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1D3 18280 bytes
SHA-256: 4420c8ecb1794a6907bef71c51fc42b51a8134d1a83731b5a37d85bac0a2cdd7
font_01_sfnt_off00011176.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11176 10680 bytes
SHA-256: f9a82f9dd8c39fcb3e091633b12518959cbc4e02091ba5489ac2881b8cab4a5e
font_02_sfnt_off000129ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129EF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off00014200.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14200 16096 bytes
SHA-256: 4ba2f64648f3913d62e340dbcfb60868d09d2a275a626c0843c73eb1759bed3a

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