Malicious PDF — malware analysis report

Static analysis result for SHA-256 57155fe68214a0b1…

MALICIOUS

PDF

94.4 KB Created: 2021-06-29 13:35:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: a64ddeeb92c657de0e1ba21fdb4a2695 SHA-1: ada3fef9cc8bb811c188afc00f851cac0d871c63 SHA-256: 57155fe68214a0b13e6a38304cc27cc896963ec5ff9d019a2865637073dd3e8c
164 Risk Score

Malware Insights

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

This PDF sample was flagged by ML classifiers and ClamAV as malicious, exhibiting characteristics of a phishing and trojan distribution campaign. It contains a high number of external links, many pointing to potentially compromised CMS upload directories or disposable hosting, suggesting an attempt to host malicious files or redirect users. The presence of a 'download button' lure further supports the intent to trick users into downloading a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9937

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://moveo-sport.pl/userfiles/file/72427213070.pdf In PDF document text
    • https://nikoljski.com/ckfinder/userfiles/files/denixejudikaliwigabujajim.pdfIn PDF document text
    • http://smartwealthhk.com/userfiles/jejobixalaxuga.pdfIn PDF document text
    • http://www.franklinwebdesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f0fe4c24ca---debeji.pdfIn PDF document text
    • https://formapolis.it/wp-content/plugins/super-forms/uploads/php/files/45983adeeb5b39bced9cad4439f5e3f3/68610496569.pdfIn PDF document text
    • https://kozhikodedeaf.org/admin/my_files/file/14315724157.pdfIn PDF document text
    • https://goodline.by/userfiles/file/watusodagifa.pdfIn PDF document text
    • http://bollywoodsalonskokie.com/admin/images/file/81765185463.pdfIn PDF document text
    • http://andreevmag.com/wp-content/plugins/super-forms/uploads/php/files/1e8c9dc09b10b08915aaf3d3ece676d3/61456532069.pdfIn PDF document text
    • http://stylist.in.ua/wp-content/plugins/formcraft/file-upload/server/content/files/160b56c2ee6012---68306050742.pdfIn PDF document text
    • http://sammyuriasproperties.com/userfiles/files/36219449559.pdfIn PDF document text
    • https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160b8dc5ed6ea1---68191158219.pdfIn PDF document text
    • http://amtusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b4c45c9fbbf---nekitomevubaxelomotuwizax.pdfIn PDF document text
    • https://socialchangefactory.org/wp-content/plugins/super-forms/uploads/php/files/d14465f3a9964f8ed06098ac3b4ac604/59093201589.pdfIn PDF document text
    • https://asharfilalkulfi.com/ckfinder/userfiles/files/22027066613.pdfIn PDF document text
    • http://endustriyelkiralama.com/wp-content/plugins/super-forms/uploads/php/files/r3hrm37dkib5p5fl2eeb21lgre/bexelakipipo.pdfIn PDF document text
    • https://wills.sg/wp-content/plugins/super-forms/uploads/php/files/22d8640fcd313fdd7d58fa2c8e6977a1/36117382000.pdfIn PDF document text
    • https://big-affaires.com/img/pics/files/kazutozeregulijebewapepe.pdfIn PDF document text
    • http://bigandtallking.com/userfiles/file/nadaxitinozas.pdfIn PDF document text
    • http://pcmcpropertyblog.com/wp-content/plugins/super-forms/uploads/php/files/befedaa168b6a9f2ca00d8e2235eb6f7/dibabedagizifupajutofogi.pdfIn PDF document text
    • https://www.infratechgroep.nl/wp-content/plugins/super-forms/uploads/php/files/54d1c471ee5c7cf126c66918fdc932bc/27155908484.pdfIn PDF document text
    • https://sumangold.net.vn/wp-content/plugins/super-forms/uploads/php/files/47dflnvjtlso842bgu58fvjpr2/80392100324.pdfIn PDF document text
    • https://vansuloi.com/uploads/userfiles/file/kizekabajos.pdfIn PDF document text
    • https://askisan.com/upload/ckfinder/files/gijematetugovatilide.pdfIn PDF document text
    • http://74ahs.com/clients/2/2a/2a132ee8da0778863662fd4b1fa251ed/File/pesimodikevelewu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=how+to+reset+mxq+boxPDF 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_off0000ffb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFB3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000117ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117CA 10328 bytes
SHA-256: c616b3010aec9593176a92f5936bb0bd9d9f1310b0bb2577dbf434966c133a67
font_02_sfnt_off00012f30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F30 30140 bytes
SHA-256: ac1ace51bbc8354b2381a7a31f87507249a6984f305174f47ac0d80bb35677fb