Malicious PDF — malware analysis report

Static analysis result for SHA-256 32da8fa983398d49…

MALICIOUS

PDF

83.2 KB Created: 2021-09-07 23:50:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: 0b0b6df483a47e7798b3ca505ba7f00c SHA-1: d1e74ba7c75c262d938ba87ab745cb5dcbf28bc0 SHA-256: 32da8fa983398d494068803f41f1b4a1e5005a1d889da6b6a7ad5784c3addd83
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, containing numerous embedded URLs that point to compromised WordPress sites and other domains, likely serving as a distribution point for phishing or malware. The presence of external URI heuristics and link farm indicators further supports this attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://synerhu.ru/uplcv?utm_term=l%27etat+de+rapprochement+bancaire+cours+pdf PDF link annotation
    • https://xn----7sbabak5acz7byau.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/c8dd8b7c2513e7f08e607c4ff7a8edf3/82405881946.pdfIn PDF document text
    • https://michaels-limo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f09fb4701d---92021844110.pdfIn PDF document text
    • https://webmenuplus.com/images/file/1873565085.pdfIn PDF document text
    • http://www.acefence.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b8258eafa69---xusoxo.pdfIn PDF document text
    • https://indianpowerliftingfederation.com/userfiles/file/kijituwatawubomono.pdfIn PDF document text
    • https://www.harnoordesigns.com/wp-content/plugins/super-forms/uploads/php/files/99aeddf760dd80c097d412437c232479/rubazisefinujusiveteg.pdfIn PDF document text
    • http://purpledoorchurch.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071ae77edbaa---bepitisax.pdfIn PDF document text
    • http://gsprojekt.eu/userfiles/files/37427806088.pdfIn PDF document text
    • http://www.absolutecateringla.com/wp-content/plugins/formcraft/file-upload/server/content/files/160757c5c9b499---40112802223.pdfIn PDF document text
    • http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/493jjuonuks1fmi3defr2easl3/65557808625.pdfIn PDF document text
    • http://esteticka-stomatologie.cz/files/content/file/nafilaliko.pdfIn PDF document text
    • http://xn--49s538bo8ux8c.net/userfiles/file/larumakepa.pdfIn PDF document text
    • https://98ing.com/upload/ck/files/20210806_135209.pdfIn PDF document text
    • http://noithatachau.vn/webroot/img/files/vizujelak.pdfIn PDF document text
    • http://www.x454.com/wp-content/plugins/super-forms/uploads/php/files/p1s34m50abrh138jllum57fma2/vapadalijesudupujixu.pdfIn PDF document text
    • https://www.m2asolutions.com/wp-content/plugins/super-forms/uploads/php/files/4933f5e6ab0923ec24182836832e88dd/64619301911.pdfIn PDF document text
    • http://panyuchen.com/ckfinder/userfiles/site_eachfun_com/files/2397328320.pdfIn PDF document text
    • http://aksaaydinlatma.com/img/editor/image/file/wagawakobulatilubibaxot.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/notidokotolu.pdfIn PDF document text
    • http://thanhlamresort.vn/wp-content/plugins/formcraft/file-upload/server/content/files/1606d2085dfa3a---52463840117.pdfIn PDF document text
    • http://hurtmar.pl/Upload/file/nafadixepokadumuvatadixo.pdfIn PDF document text
    • https://www.comperat-89.fr/ckfinder/userfiles/files/92028585779.pdfIn PDF document text
    • https://kakvkusno26.ru/wp-content/plugins/super-forms/uploads/php/files/30086c41191695a1af8802ad7180671a/20922875394.pdfIn PDF document text
    • http://spc1991.com/ckfinder/userfiles/files/90321191206.pdfIn PDF document text
    • https://skyfireconsulting.com/wp-content/plugins/super-forms/uploads/php/files/nkr017genuqd8epauhvm8tbn94/64500629872.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_off0000d815.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD815 21220 bytes
SHA-256: d4bb385abbac262e1d8340feaf5fd1696a9c04ee29eee3ee5b3175c930bda3db
font_01_sfnt_off00010d6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D6E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012585.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12585 11072 bytes
SHA-256: f0d9759d9c77ea5c47572e03b247c6ef7a18d7bf50ebe086eed9e325aacb9291

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