Malicious PDF — malware analysis report

Static analysis result for SHA-256 eae6247e40d4bcbb…

MALICIOUS

PDF

85.3 KB Created: 2021-08-26 14:06:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 3b14257ce6c038c40d1451e0cd0b44c1 SHA-1: 310f538ef0c3e8ad420494e99c92d69281c626ae SHA-256: eae6247e40d4bcbb0811def32ed8b3b64fbbaed9b227d1bcf2382525e1dfdef2
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics as malicious, including a high-confidence ML classifier and ClamAV detection. It functions as a link farm, with numerous URLs pointing to compromised CMS uploads and disposable hosting, suggesting an attempt to redirect users to malicious content. The presence of external URIs and the overall structure indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9912

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://akgikorea.com/file_upload/fck_upfile/file/91340467887.pdf In PDF document text
    • http://sreema.org/FCKeditor/file/metaxevijedozoteki.pdfIn PDF document text
    • http://www.circoloaletrium.it/wp-content/plugins/formcraft/file-upload/server/content/files/160817e79ca4ea---49389722240.pdfIn PDF document text
    • http://www.fotografoeventimilano.com/wp-content/plugins/formcraft/file-upload/server/content/files/160749237b4217---bobilosurabagojijalaxa.pdfIn PDF document text
    • http://hotararicedo.ro/files/files/19994357021.pdfIn PDF document text
    • https://akita-inu.lv/www/files/files/31540051094.pdfIn PDF document text
    • http://www.lukoilmarine.com/ckfinder/userfiles/files/84656543956.pdfIn PDF document text
    • https://bushregenerators.net/userfiles/files/570692143.pdfIn PDF document text
    • http://smartraoptics.com/fck_filemanager_upload/file/55476561723.pdfIn PDF document text
    • http://aberdeeneyes.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b5b7e8e5e60---53333600307.pdfIn PDF document text
    • http://digitalpolicycouncil.com/imagenes/file/metujufifazovefoxebo.pdfIn PDF document text
    • http://enotecagaribaldi.it/userfiles/files/83471234936.pdfIn PDF document text
    • https://dispomydeal.com/wp-content/plugins/super-forms/uploads/php/files/8b62e878d35cc3f8b6d0fbd6693822cd/89733343695.pdfIn PDF document text
    • http://www.pics4us.de/userfiles/file/88781534484.pdfIn PDF document text
    • http://tiga.co.th/ckfinder/userfiles/files/zekegidamekezikevamomiz.pdfIn PDF document text
    • https://aquariumfargo.com/wp-content/plugins/super-forms/uploads/php/files/405059aa603f810c47bc735da600bfc2/wefitatumer.pdfIn PDF document text
    • https://ozmutludokum.com/userfiles/file/jewapatobemabepevofivof.pdfIn PDF document text
    • https://gamletaarnhuset.no/wp-content/plugins/formcraft/file-upload/server/content/files/160aa239be06f3---13313226414.pdfIn PDF document text
    • https://advancedbusiness.co/wp-content/plugins/super-forms/uploads/php/files/1c50fc680b1314bc70cc396eaae40971/litajajafejorabadena.pdfIn PDF document text
    • https://www.andyselfstorage.co.uk/wp-content/plugins/super-forms/uploads/php/files/o2mtko4kmjvf59jt5t106oac1r/pibitomeze.pdfIn PDF document text
    • http://ifa-astrologie.de/userfiles/file/19140831411.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/160788cb949c0f---36776674448.pdfIn PDF document text
    • https://ofertaromania.ro/ckfinder/userfiles/files/41932175857.pdfIn PDF document text
    • https://quatcongnghieput.com/uploads/files/furirutigos.pdfIn PDF document text
    • http://shengnabei.com/uploadfile/file///2021081000593485.pdfIn PDF document text
    • http://www.unidacardoso.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160d3a0cf4e9bf---fisalulomav.pdfIn PDF document text
    • https://www.higher-energy-trampolineclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a86fe81fb74---72014619333.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=game+slope+2PDF 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_off0000eb0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB0B 17264 bytes
SHA-256: d429544ad33d778efd9f07bf96f7e1022167684d0f37a941a439ef439cc2ff96
font_01_sfnt_off000117ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117EC 10176 bytes
SHA-256: 76a057f133d860115f78976c1ca0f64c334d14cfa929194439706b8d1e04fb96
font_02_sfnt_off00012ecf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12ECF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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