Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e3cd7bd1ad3dda3…

MALICIOUS

PDF

81.1 KB Created: 2021-09-01 00:24:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 4a97eeb81261618dceb89f09467ead42 SHA-1: 3dd0dcca7a166d1daf82abee6df2bb692cf9ba1c SHA-256: 3e3cd7bd1ad3dda361ba8e61aa394212b8fb532bd302d2d21c21b7ff35d06ff8
156 Risk Score

Malware Insights

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

The PDF contains numerous external URIs and is flagged as a link farm on disposable hosting, indicating a likely phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, classifying it as Pdf.Phishing.Trojan. The presence of multiple compromised CMS upload links further supports the malicious nature of the document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://medvor.ru/uplcv?utm_term=sears+craftsman+eager+1+lawn+mower+manual PDF link annotation
    • http://fouladsazanco.com/Upload/file/wagukuda.pdfIn PDF document text
    • http://www.velkoobchod-man.eu/ckfinder/userfiles/files/75661947639.pdfIn PDF document text
    • https://regalcabs.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608e0e2c0d7a0---kufaturatijejefa.pdfIn PDF document text
    • https://www.vibrationmonitoring.asia/wp-content/plugins/formcraft/file-upload/server/content/files/160cfc3f8ea424---delewulenomopuruv.pdfIn PDF document text
    • https://delaneyllc.cfonewsletter.com/ckfinder/userfiles/files/nakixa.pdfIn PDF document text
    • https://centar-znr-zop.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1609f1e961262b---nuwuruli.pdfIn PDF document text
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/16085bc54461aa---pefafipavosorafinakure.pdfIn PDF document text
    • http://creativetechno.in/userfiles/file/93849563287.pdfIn PDF document text
    • http://akademia-jedenastka.pl/zdjecia/fck/file/wotofokijoribepekap.pdfIn PDF document text
    • https://gpagroup.in/wp-content/plugins/formcraft/file-upload/server/content/files/160de9ef824a06---71821243691.pdfIn PDF document text
    • http://www.veronicaneal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/16089ada397151---sadizexokusitegixopegiz.pdfIn PDF document text
    • http://www.peplex.it/wp-content/plugins/formcraft/file-upload/server/content/files/160a3eceb2fccf---jexefofizowemodizafox.pdfIn PDF document text
    • https://gencerenerji.com/resimler/files/40938724268.pdfIn PDF document text
    • http://xn--80aaaaaikdebj9ccf1ayja1b5a3q.xn--p1ai/ckfinder/userfiles/files/paxulemibokumuwuwekir.pdfIn PDF document text
    • https://miguktour.com/FileData/ckfinder/files/20210618_232827E154B8D3A1.pdfIn PDF document text
    • https://empylean.com/wp-content/plugins/super-forms/uploads/php/files/eeskidmdu4jenjsm54vbu2kndm/11311097729.pdfIn PDF document text
    • http://dkkarsin.pl/img/upload/files/punerovovudusi.pdfIn PDF document text
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/7e92b70c654bfd17f3386715d5cb9b2b/somugavidutobarifuvo.pdfIn PDF document text
    • http://vamaconsulting.sk/userfiles/file/dupubopegufekugigiraf.pdfIn PDF document text
    • https://nasikampung.info/contents//files/penupobofelaravebijed.pdfIn PDF document text
    • https://118highschool.am/wp-content/plugins/super-forms/uploads/php/files/7da6df90ad93644c0a26d9ee44d348fa/kewus.pdfIn PDF document text
    • http://www.greddy.com/admin/common/ckfinder/userfiles/File/16863936877.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d8c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8C8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f0da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0DA 17016 bytes
SHA-256: 4867aacb1f07f8d5b1cc2ef287e33870cdca117b08d27e9f0b7fff0b41465f01
font_02_sfnt_off00011c7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C7B 10900 bytes
SHA-256: 10ce3c20515890bc4231cfefc02305edbad0f494ab16951faea04410a04a2e25

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