Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a5613151b7cfa08…

MALICIOUS

PDF

92.0 KB Created: 2021-07-08 02:49:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: e1d3f95978430af7a21877daf7bdfcca SHA-1: f8392bd2b04e601d0a018bad137ecf45ae907c39 SHA-256: 6a5613151b7cfa081b2a4578be316cd45bd709952f21cab9eead9274b43cc61f
156 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Numerous heuristics identified the PDF as a link farm, with many external URIs pointing to compromised WordPress sites and disposable hosting. These links likely serve as lures for phishing or to distribute further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://drafthe.ru/uplcv?utm_term=lucid+dreaming+guided+hypnosis PDF link annotation
    • https://landlorddebtadvisory.com/wp-content/plugins/super-forms/uploads/php/files/p6seumpnvbgvh2ihd5vd96e7j3/fanajixo.pdfIn PDF document text
    • http://www.maoles.com/wp-content/plugins/formcraft/file-upload/server/content/files/160765226930d5---zejewodusezujilivofimeze.pdfIn PDF document text
    • http://orchid-daikanyama.com/userfiles/file/zuwazowitanapavifas.pdfIn PDF document text
    • https://www.varisistanbul.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079a7d451d6d---somitixemijokukavow.pdfIn PDF document text
    • http://kwik-it.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160d8316d8479f---nujusokolidedufovuk.pdfIn PDF document text
    • https://atlanthealth.com/wp-content/plugins/super-forms/uploads/php/files/29600ed12703d238f016930bf0173975/22578710161.pdfIn PDF document text
    • https://marblobaths.com/app/webroot/img/files/xaxufetezemusufip.pdfIn PDF document text
    • http://localhomesales.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160706529f0dae---numalu.pdfIn PDF document text
    • http://aarogyamedico.com/userfiles/file/ditonasiwoxirusavobidi.pdfIn PDF document text
    • http://surtek.biz/image/files/20150108_214424.pdfIn PDF document text
    • https://divorcioconsensual.com.br/wp-content/plugins/super-forms/uploads/php/files/caa682de93bc9f75cd18a3dad602afa0/81503383258.pdfIn PDF document text
    • https://www.auditek.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160b90083e05a8---gexawomog.pdfIn PDF document text
    • https://myphambambi.com/webroot/img/files/tegeveferobike.pdfIn PDF document text
    • https://www.anandtirth.com/wp-content/plugins/super-forms/uploads/php/files/16l499dokkit3765lqf0dneut5/86492495052.pdfIn PDF document text
    • https://eduinfinite.com/wp-content/plugins/super-forms/uploads/php/files/18ac5952d7d52902166f27739cf88a02/2831838086.pdfIn PDF document text
    • https://www.sacproblemleri.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fa8a5c5d44---zasoxonefetogafefariwag.pdfIn PDF document text
    • https://tecsal.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160814b47ca79f---tonapixo.pdfIn PDF document text
    • https://airbays.com/userfiles/file/getodovefiwajitogasotoxut.pdfIn PDF document text
    • https://mebelpozakazu.ru/wp-content/plugins/super-forms/uploads/php/files/caefd734c203e8b8a19470d051bd23f0/xireranawanuj.pdfIn PDF document text
    • http://yoron.net/up/files/zujesagapi.pdfIn PDF document text
    • http://premiumresourcing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160886e868d5ed---dodusunawuxanibabivabulel.pdfIn PDF document text
    • https://www.kadinlarsitesi.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606cd8a65c062---diwivefolupeja.pdfIn PDF document text
    • 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_off0001022a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1022A 10988 bytes
SHA-256: 35860303204a8767e0f9a415830eb0713bb8607d487d1688d5419a076414199e
font_01_sfnt_off00011b44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B44 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013356.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13356 18440 bytes
SHA-256: 115178d6916a23f053ccd11a44fffeae4f3ab44d888509083a71838e511489ef

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