Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd7f658c8f77cf9a…

MALICIOUS

PDF

83.9 KB Created: 2021-07-22 01:33:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 15abfafcc7d77fe2821afc0b41bd09a2 SHA-1: 8e12048a8d28e796affca2465dee818fef0b082e SHA-256: bd7f658c8f77cf9a2276cf092bfcb8b89dc7cc562c60e0d1d07d8aa831d6b3b5
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, directing users to multiple compromised WordPress sites and potentially disposable hosting domains. These links likely serve as a lure for phishing or to download further malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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://www.finestkindcharter.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089b0aab3384---gasaxolisujesepavup.pdf In PDF document text
    • https://akarchlight.com/wp-content/plugins/super-forms/uploads/php/files/9865b93b4c965566d4f5009e9e7f5636/15689736157.pdfIn PDF document text
    • https://verandapattaya.com/userfiles/files/95051618545.pdfIn PDF document text
    • https://pasarantogel2.com/contents//files/27106836454.pdfIn PDF document text
    • http://middlegeorgiacoinclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c8eacf3f98---figoxivorixopixexusad.pdfIn PDF document text
    • https://extremetour74.ru/wp-content/plugins/super-forms/uploads/php/files/6ea12accc412992cb1b1cba69f57ff5a/20274270923.pdfIn PDF document text
    • http://anandamsanyal.com/userfiles/file/47242292758.pdfIn PDF document text
    • https://ols.lighting/wp-content/plugins/super-forms/uploads/php/files/f6c3d2f79284d77689d50bb1d88eef87/rinodituvirusibobixakozu.pdfIn PDF document text
    • https://masterjobintl.com/ckfinder/userfiles/files/sorigidoporanufu.pdfIn PDF document text
    • https://zoldlepes.hu/userfiles/file/xabupovijixiw.pdfIn PDF document text
    • https://garyjetcenter.com/wp-content/plugins/super-forms/uploads/php/files/8d723306234f98b8de648624a6365283/jaxatizusixuxabo.pdfIn PDF document text
    • https://www.helmmsp.ca/wp-content/plugins/super-forms/uploads/php/files/506aeb23c9818bc226c413e18080d9b2/86352872454.pdfIn PDF document text
    • http://andlupa.com/userfiles/file/severizubowativexife.pdfIn PDF document text
    • http://amwordpress.org/wp-content/plugins/formcraft/file-upload/server/content/files/160bfdee6ca0ed---42405319273.pdfIn PDF document text
    • http://svenstavik.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083e0f2d39da---jejogizalezuliwot.pdfIn PDF document text
    • http://wignaccent.com/FCKeditor_2.6.3/userimages/file/20210701202717.pdfIn PDF document text
    • http://serendipityorlando.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607916d1a1706---38773970374.pdfIn PDF document text
    • http://mofrantech.com/userfiles/file/65800336126.pdfIn PDF document text
    • https://audreyheselmans.com/_files/file/58687674593.pdfIn PDF document text
    • https://www.peeryhotel.com/wp-content/plugins/super-forms/uploads/php/files/46ea92a6a7cb94616bacf4b8c18f2e68/45884072049.pdfIn PDF document text
    • http://abapaposentados.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160eda4f776985---bujojip.pdfIn PDF document text
    • https://masterpieces-mallorca.com/wp-content/plugins/super-forms/uploads/php/files/6215ae1509d591b731486c7ef6c29688/56182621622.pdfIn PDF document text
    • https://stayinbranson.com/ckfinder/triplebuserfiles/file/62166009724.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=apn+h2o+androidPDF 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_off0000e62a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE62A 10148 bytes
SHA-256: 26e92834be4d3b5e9d76617fa00b6e5f3ef5d1661d02c66610c5c0a084b6c231
font_01_sfnt_off0000fcbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCBC 17280 bytes
SHA-256: f1c699d0f8d9ffa2ee67af1c1ba0d72e181d08614fcaa5411833fb35809d0d0f
font_02_sfnt_off000129e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129E6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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