Malicious PDF — malware analysis report

Static analysis result for SHA-256 e09bf296b6171f40…

MALICIOUS

PDF

83.5 KB Created: 2021-08-15 16:31:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 1b85db7ceef63b6ac1c674bef3736c6a SHA-1: 4468b1bbd0af9c2aa8eef83fbf7b8f456a6026a6 SHA-256: e09bf296b6171f40bb24fdb186bd91d7568d03a7e6f3eb389cded0c4e3459d5a
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to compromised WordPress sites and other domains, suggesting it's part of a link farm or phishing campaign. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with techniques used to distribute malware or redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://rallyteamwalraven.nl/file/tubomatafidipu.pdf In PDF document text
    • https://bepxuyenviet.com/upload/files/21671159817.pdfIn PDF document text
    • http://energo-winstal.pl/userfiles/file/2837713471.pdfIn PDF document text
    • https://wavesmaroochydore.com/wp-content/plugins/super-forms/uploads/php/files/kmqqgjhs1ok9o0ppq318i25ki2/1249213615.pdfIn PDF document text
    • http://westernmaki.com/uploads/files/zusalavida.pdfIn PDF document text
    • https://reifenscho.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bdcc64df795---53400289749.pdfIn PDF document text
    • https://www.enterpriselighting.com/wp-content/plugins/super-forms/uploads/php/files/0126d35928bbaecb1b6a9bff13686b1e/82566459785.pdfIn PDF document text
    • https://nationalcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d0066513966---visonetekuw.pdfIn PDF document text
    • http://aitrans.cn/UploadFile/file/F1202107011543563998.pdfIn PDF document text
    • http://balone.net/_upload/file///zujisogofavapowori.pdfIn PDF document text
    • https://refour.dk/wp-content/plugins/super-forms/uploads/php/files/ba610d14f08a2ce1ae243a23b17d74b9/xovavomesenim.pdfIn PDF document text
    • http://furkansigorta.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1606ff00e5abdb---43402345596.pdfIn PDF document text
    • https://vanchuyenduongsat.vn/upload/files/mekerone.pdfIn PDF document text
    • https://www.hungryalex.com/wp-content/plugins/super-forms/uploads/php/files/a4e3f3064348ce32a891075382549246/53047547868.pdfIn PDF document text
    • https://zweiund40.com/wp-content/plugins/super-forms/uploads/php/files/vqqt82884anvus9a8qdlr1ootj/30151590257.pdfIn PDF document text
    • http://orrizon.ru/images/file/36533088711.pdfIn PDF document text
    • http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/saf7c1u624m30g47u4qhgrn8g0/xoxefuzejabejefimevokivu.pdfIn PDF document text
    • https://alignerco.com/wp-content/plugins/super-forms/uploads/php/files/7e46e18e579ab2e0a204f3e6e4085862/91526007258.pdfIn PDF document text
    • http://wrhsclassof82.com/clients/d/dd/dd94ad2327da436b0bfbe5937c3cc641/File/44630640918.pdfIn PDF document text
    • http://streetnn.ru/data/upload/ck/files/fetasares.pdfIn PDF document text
    • https://alihuata.com/userfiles/file/basoxejozebelonuse.pdfIn PDF document text
    • https://graffitipaintstudio.com/wp-content/plugins/super-forms/uploads/php/files/dce31c800e8e82726825c83a29baefa3/90905259329.pdfIn PDF document text
    • https://icon-studios.com/userfiles/file/75704504880.pdfIn PDF document text
    • https://vpmemorial.net/images/file/66978086941.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=ap+physics+1+motion+graphs+worksheetPDF 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_off0000e11d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE11D 11100 bytes
SHA-256: 48f98f59bc8c6fdda7f66f2fddae6fd13229e917431a2b2058740095318c4159
font_01_sfnt_off0000fb0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB0F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011321.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11321 16552 bytes
SHA-256: 771bfe26faca23ac99f5ce8c6eec80dacd6647445be19c84704c080c30b03ef7

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