Malicious PDF — malware analysis report

Static analysis result for SHA-256 462136800ca1b5db…

MALICIOUS

PDF

85.9 KB Created: 2021-07-02 09:07:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: bc73703302475055d02d9324f585be91 SHA-1: 0789a9692d20dca1dd186ad8dec2bee18a345fb8 SHA-256: 462136800ca1b5db768e5b642555161a083d162306573769f593f41d7d2f92a9
156 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, many of which point to compromised websites or disposable hosting, indicating a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely involving the exploitation of PDF vulnerabilities to redirect users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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 https://cructi.ru/uplcv?utm_term=safe+working+environment+word+search+answers PDF link annotation
    • http://quatanggiabao.com/images/uploads/files/62604929738.pdfIn PDF document text
    • https://pelletier-tp.fr/ckfinder/userfiles/files/95567907403.pdfIn PDF document text
    • https://marosme.ro/hirek/file/pozuxopiwilegerulajutako.pdfIn PDF document text
    • https://www.lokalesichtbarkeit.de/wp-content/plugins/super-forms/uploads/php/files/a3ukoseo1uc1tbpich86fcerij/14499846950.pdfIn PDF document text
    • https://www.ndgai.com/wp-content/plugins/super-forms/uploads/php/files/86vpe9bcd2rsmejc887ldtf1hb/75463613275.pdfIn PDF document text
    • http://candientushinko.com/images/file/ravumosokosudut.pdfIn PDF document text
    • http://tz5168.com/uploadfile/image/2021/05/27/file/20210527_215757_164.pdfIn PDF document text
    • https://rocksoliddesigns.biz/userfiles/file/kebukazewajoxajat.pdfIn PDF document text
    • http://esoftland.com/userfiles/file/30276870589.pdfIn PDF document text
    • http://aivieksteslaivas.lv/userfiles/file/xazekubara.pdfIn PDF document text
    • https://ladychief.com/wp-content/plugins/super-forms/uploads/php/files/a139092347232c566a6f8af00baf8cbf/kawezirusegalijavegu.pdfIn PDF document text
    • http://adabaskimerkezi.com/upload/file/waraparememi.pdfIn PDF document text
    • https://puertoestereo.com/wp-content/plugins/super-forms/uploads/php/files/si46sjouaoikivdielgmc0ffm5/rovuxavabiravozolewemik.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/kabenawelemuwiweki.pdfIn PDF document text
    • https://isosklo.cz/uploads/sifosifubixolovuwitil.pdfIn PDF document text
    • https://www.getfitcrew.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b8a1d9af9b8---pinuped.pdfIn PDF document text
    • https://rrvchefs.com/wp-content/plugins/super-forms/uploads/php/files/3bef0792f1412f8717fd1d4411c99fca/3748597258.pdfIn PDF document text
    • http://agro-vostok.ru/userfiles/file/ruvibadoworojunavixojep.pdfIn PDF document text
    • https://victory-agency.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607917b1591a4---73488259051.pdfIn PDF document text
    • https://www.chartsunlimited.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/160c1cc2c0bb30---gelowitof.pdfIn PDF document text
    • http://kusadasidentalclinic.com/img/userfiles/files/diram.pdfIn PDF document text
    • http://www.akutrans.com/wp-content/plugins/formcraft/file-upload/server/content/files/160805ba757c10---dupomit.pdfIn PDF document text
    • http://www.oschouston.com/osc/wp-content/plugins/formcraft/file-upload/server/content/files/16087fc898aa1a---potawolanokin.pdfIn PDF document text
    • http://www.icodar.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c345d20885a---luzironufuvevuza.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_off0000eab8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAB8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000102ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102CA 17352 bytes
SHA-256: f377cd000f4563c07d62ac52fbb03b71a6cb0890a2de9ba1c78b79d72b583cfb
font_02_sfnt_off00012ffa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12FFA 11196 bytes
SHA-256: 450b6fdd30235df77fe600ce0dbf5e65be5750bddb4f972798309e6393fea80f

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