Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e650bf474a593a5…

MALICIOUS

PDF

97.0 KB Created: 2021-06-26 03:14:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 53adcd60fc10b003bc3cbee8c6faf1c8 SHA-1: b4dc7b74e7942e851db3b210410f4291c33e9aeb SHA-256: 0e650bf474a593a507d3316edfc311d1dd8cb9813d19998f35a44c57a6ace912
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links pointing to compromised WordPress sites and disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of embedded URLs and the PDF structure strongly suggest it's part of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9929

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://staffxrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/e7ba85e28efa7c351594ecac66424881/kunilenepumi.pdf In PDF document text
    • https://lynnesnaturaltreats.com.au/wp-content/plugins/super-forms/uploads/php/files/258958623f301c9dafec708497b3c795/5033295141.pdfIn PDF document text
    • http://ophtalmic-overnight.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160748667a5d51---xemuziwa.pdfIn PDF document text
    • https://www.tangelo.no/wp-content/plugins/formcraft/file-upload/server/content/files/16072a53ac5890---jilowogewup.pdfIn PDF document text
    • https://thepetrichortouch.com/wp-content/plugins/super-forms/uploads/php/files/ddvmmkckiqspqavcp849qvqjho/dowasefelilaxema.pdfIn PDF document text
    • http://www.korayozelguvenlik.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a128e101790---26203667845.pdfIn PDF document text
    • http://www.blueoak.fr/image/file/2168778734.pdfIn PDF document text
    • https://acethamessecurity.co.uk/wp-content/plugins/super-forms/uploads/php/files/74e257e8fdc1a52c7f4206c96f95be74/divurigezulule.pdfIn PDF document text
    • http://kperrylaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/vomibojazanugevujotir.pdfIn PDF document text
    • https://www.web2business.pt/wp-content/plugins/formcraft/file-upload/server/content/files/160923fb3ebeb5---37332222236.pdfIn PDF document text
    • http://vtvxm.vn/userfiles/file/34122644071.pdfIn PDF document text
    • http://bellezaeimagen.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160b83caa2af85---66412531590.pdfIn PDF document text
    • http://alphasigmaoverseas.com/userfiles/file/41451260740.pdfIn PDF document text
    • https://signaturetowerpune.com/wp-content/plugins/super-forms/uploads/php/files/ncvo9s3cd8kt5gep0b2tlqmta4/fipatujotixekebavuwibo.pdfIn PDF document text
    • http://karthikeyanjayaram.com/userfiles/file/kagosujibukot.pdfIn PDF document text
    • https://www.mnspineandsport.com/wp-content/plugins/super-forms/uploads/php/files/f3462e52dcd1d771ba02120b7ad30cb5/loratirakopafuvix.pdfIn PDF document text
    • https://homini.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1606c6cf4d0b6d---21022291037.pdfIn PDF document text
    • http://lichnyiybrand.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160c569468dd7f---8797175045.pdfIn PDF document text
    • https://www.reparaciondebomba.com.ar/wp-content/plugins/super-forms/uploads/php/files/mkg4fib9jb5pla8bosjphqudu7/gudubetaka.pdfIn PDF document text
    • http://www.commandinglife.com/wp-content/plugins/formcraft/file-upload/server/content/files/160908243b34be---jefukan.pdfIn PDF document text
    • https://www.bountyvacation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c50e6f260a9---dugawoxuxowebobimevuxis.pdfIn PDF document text
    • http://akgikorea.com/file_upload/fck_upfile/file/38848829893.pdfIn PDF document text
    • https://uniqrelation.com/userfiles/file/leruruvozexazetakoned.pdfIn PDF document text
    • https://selectwifi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a131ec6c482---35946973712.pdfIn PDF document text
    • https://clickkedai.com/userfiles/file/79560903751.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=cpr+american+red+cross+test+answersPDF 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_off000116bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116BC 17964 bytes
SHA-256: 6f11d37d8486a138189d9733f0f74a8c0fda030d3a629501e0a81a8a22949ca8
font_01_sfnt_off00014593.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14593 10748 bytes
SHA-256: e4fa331b5f62f4c3dd759a921ba2f27f33bea9d38cf74abc1bec1dbd95fa928a
font_02_sfnt_off00015e63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15E63 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1