Malicious PDF — malware analysis report

Static analysis result for SHA-256 be75fda2e372074f…

MALICIOUS

PDF

83.7 KB Created: 2021-06-27 23:42:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 258b54693ab53e4cbaf4affde528d5a1 SHA-1: fb97a03193f8e0a642d622e5543ff2f6caa7e6d1 SHA-256: be75fda2e372074f0c3bb30cbcf514b82685c203900a04f0dbe91b5a16f830be
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous links pointing to compromised WordPress sites, indicating an attempt to host malicious content or redirect users. ClamAV detected this file as Pdf.Phishing.Trojan, and ML classifiers also flagged it as malicious. The embedded JavaScript likely facilitates the redirection or download of further malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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.majoriscambio.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160961cbd87781---zapofolepapotemajotopano.pdf In PDF document text
    • http://worksafeorg.com/wp-content/plugins/super-forms/uploads/php/files/fe7tg5i2klsnrjgpnttn7oolv5/sozatoraleminepev.pdfIn PDF document text
    • https://www.helpfulhunks.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1609a60f695b3c---jigaraveluf.pdfIn PDF document text
    • https://seeandhearbetter.ie/img/shop//contents/mejuzodifozejezomogevir.pdfIn PDF document text
    • http://bakoca.hu/files/file/12057770649.pdfIn PDF document text
    • http://www.allatpatikapecs.hu/images/file/wivadoxuvosokewivizimi.pdfIn PDF document text
    • https://www.goldenplanet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160c635c3ca90a---risuvabovafodepe.pdfIn PDF document text
    • https://www.hadlowsecurityshutters.com/wp-content/plugins/super-forms/uploads/php/files/c1c7aede35e4c46e76f339f43df2135c/52719311858.pdfIn PDF document text
    • http://www.deadclan.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608f704376209---buvopoxi.pdfIn PDF document text
    • http://www.191seo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d11f065b04---teredadevosijatobogosuzu.pdfIn PDF document text
    • http://bannails.com/fckeditor_userfiles/file/14620167490.pdfIn PDF document text
    • http://lamachine.nl/userfiles/file/zalute.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b301ebab3cf---famawazagijulemanubokede.pdfIn PDF document text
    • http://donghocasiochinhhang.net/uploads/userfiles/file/tewenozekemun.pdfIn PDF document text
    • http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6f98a24c28---kisesodabuvowuzi.pdfIn PDF document text
    • http://dzbnf.com/upload/file///74433242478.pdfIn PDF document text
    • http://pcccmiennam.com/media/ftp/file/kutov.pdfIn PDF document text
    • http://hanhthien.net/uploads/file/87354310618.pdfIn PDF document text
    • http://kinel-hunter.ru/upfiles/file/rimelana.pdfIn PDF document text
    • https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/kks9v88k7nn9cpbsll58gh8r98/99250955801.pdfIn PDF document text
    • http://ijdssymposium.eu/upload/lumavuvuwixujutitozomuwo.pdfIn PDF document text
    • https://birgatour.mn/js/ckfinder/userfiles/files/13370588234.pdfIn PDF document text
    • http://exclusivelimoservice.com/ckfinder/userfiles/files/3763050923.pdfIn PDF document text
    • https://artsketch.ru/wp-content/plugins/super-forms/uploads/php/files/6544dce1a669af27c9259ddb561bc87d/62896438593.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=what+is+text+to+text+in+readingPDF 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_off0000e3e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3E6 16752 bytes
SHA-256: 0b161064a2ddf94251d5f5d650458f5ffa8dd3aefce7126887a5eeb71c962c3e
font_01_sfnt_off00010f7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F7F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012796.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12796 10576 bytes
SHA-256: 345c614cf839154df7b925df870cd93ea341c5645e3c33719dbb5c502705df0f