Malicious PDF — malware analysis report

Static analysis result for SHA-256 eae5f5360f767dce…

MALICIOUS

PDF

93.8 KB Created: 2021-08-22 00:02:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: fc857f40508ef01a04c04787e254708e SHA-1: 3b57b938d7520505e9e19584bd7475f51d5377a0 SHA-256: eae5f5360f767dce3d71510e443c6e1dae247ffcfa706a349d50351823d20d48
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm pointing to multiple compromised WordPress sites, likely intended to redirect users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were directly extracted, the PDF structure and URL patterns are consistent with phishing or malware distribution campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9970

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://www.playerclub.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1609e671aaa07c---bezumowalabuwapubewebu.pdf In PDF document text
    • https://aspaeng.com/files/image/files/16153162723.pdfIn PDF document text
    • http://legalinet.eu/userfiles/files/kewasuzaw.pdfIn PDF document text
    • http://skolicka.eu/foto/images/file/misedesonem.pdfIn PDF document text
    • http://belst.by/upload/file/jitob.pdfIn PDF document text
    • https://www.proctoloji.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607db07003037---88964904016.pdfIn PDF document text
    • http://grafichesirio.com/userfiles/files/volaw.pdfIn PDF document text
    • http://xn--80aamdqpfpr.xn--p1ai/upload_picture/vofazipeluzopobujimojizob.pdfIn PDF document text
    • https://postscriptproductions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b23b3302d58---84335430159.pdfIn PDF document text
    • http://3duct.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bf403b708b---24639195716.pdfIn PDF document text
    • https://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/03e60d554c43c472b1e8d3b3faf4ae60/82947743661.pdfIn PDF document text
    • http://studiopassarotti.it/userfiles/files/16381871167.pdfIn PDF document text
    • http://fygl.net/uploads/file/180843595696.pdfIn PDF document text
    • http://www.nanodrywash.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d19368edb2---tamopinefivose.pdfIn PDF document text
    • http://wenxuezj.com/images/File/bitukeweku.pdfIn PDF document text
    • http://www.petersmetalstitching.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1609bd5a194c75---35650857661.pdfIn PDF document text
    • http://maxbrio.kr/files/files/niroju.pdfIn PDF document text
    • https://chupwo.com/editor_upload/file/51953812697.pdfIn PDF document text
    • https://glycocalyx.nl/userfiles/image/file/50254959517.pdfIn PDF document text
    • https://bda.ch/ckfinder/userfiles/files/5815495048.pdfIn PDF document text
    • http://teechart.com/uploads/images/files/govotizidag.pdfIn PDF document text
    • http://inphuduong.vn/upload/files/75859555302.pdfIn PDF document text
    • https://www.lokalesichtbarkeit.de/wp-content/plugins/super-forms/uploads/php/files/o8jso6a98h92vclgq0u5f1o5hk/23172553084.pdfIn PDF document text
    • https://www.ikedatosou.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6c7128bc2c---89237336306.pdfIn PDF document text
    • https://mandarinkinesiska.com/userfiles/file/88057990508.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=garbh+sanskar+book+onlinePDF 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_off00010a73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A73 10380 bytes
SHA-256: 1b05a426be6a064e09b34fe25cb2694ddd535750b651e5ed7602dc5742e93887
font_01_sfnt_off000121cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121CF 17572 bytes
SHA-256: 21c349e12f71087cb8e0cc209e6f632a4bc911f298306b55da2a527187ea9182
font_02_sfnt_off00015035.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15035 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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