Malicious PDF — malware analysis report

Static analysis result for SHA-256 baa5f1c0329ebc1d…

MALICIOUS

PDF

87.6 KB Created: 2021-07-01 18:11:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 3a858a731e0bab8a2e0af6ab182e8a79 SHA-1: fd55fa7309569287d2404117631a50c01490d27b SHA-256: baa5f1c0329ebc1d6793d3727a7dd1879807d8b2c3531b4fb0da837c0e9551d1
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. Heuristics identified the document as a link farm hosted on compromised CMS upload storage and disposable hosting, suggesting an attempt to direct users to malicious sites. The embedded URLs, while numerous, do not directly indicate a specific malware family, hence 'unknown family'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

Heuristics 6

  • 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.
  • 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.jcca.co.in/wp-content/plugins/formcraft/file-upload/server/content/files/16077943b29c74---bazejodotodenobidurixodo.pdf In PDF document text
    • https://ntwbearing.com/UserFiles/File/ruxumekewevatutubowipu.pdfIn PDF document text
    • http://israel-aliya.com/wp-content/plugins/super-forms/uploads/php/files/981433346bdafe019cfda3d0c65c55cc/67395371040.pdfIn PDF document text
    • https://relaxationplusmn.com/wp-content/plugins/super-forms/uploads/php/files/01234189c2833090793b8d6018b3c8fb/tidijitafik.pdfIn PDF document text
    • http://carnavaldemarbella.com/Senegal_5/Content/files/userfiles/file/nowojesirewujit.pdfIn PDF document text
    • http://www.skupp.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1607916c029b51---gagedibafuvufaxikebuful.pdfIn PDF document text
    • http://izeninfo.net/admin/upload/files/rupawekizaletirozepujilur.pdfIn PDF document text
    • https://osikovo.eu/webroot/img/content/files/juzawib.pdfIn PDF document text
    • https://www.goldenplanet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16082da652b286---83799080533.pdfIn PDF document text
    • https://rebates.forex/wp-content/plugins/super-forms/uploads/php/files/qm1ehl96gl1cc4eoa1bg7irom0/92423585545.pdfIn PDF document text
    • http://novaserv.com/wp-content/plugins/formcraft/file-upload/server/content/files/160adf23e2c3cb---jotodojawuvowe.pdfIn PDF document text
    • http://allegroescrow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073ace32f48c---30494518431.pdfIn PDF document text
    • http://antansconstructions.com/ckfinder/userfiles/files/70087169754.pdfIn PDF document text
    • https://goactive.hu/wp-content/plugins/super-forms/uploads/php/files/6247daf38e218022290574b97c2d5a4b/54052173126.pdfIn PDF document text
    • https://miamiuniquelimo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160add2e4a5bbe---8085713226.pdfIn PDF document text
    • https://elitteaccesorios.com/wp-content/plugins/super-forms/uploads/php/files/s7tp6havrjoenf87r4jf2h808t/43688632384.pdfIn PDF document text
    • https://sketchup360.vn/wp-content/plugins/super-forms/uploads/php/files/hkgquooglrrl9k51k8ri5t0l0i/58398818809.pdfIn PDF document text
    • http://www.luminicaambiental.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bf4bc772cb9---loveluwutuwasizeno.pdfIn PDF document text
    • http://saipanbooking.com/FileData/ckfinder/files/20210615_B4D96EC64637026F.pdfIn PDF document text
    • http://www.ashtralmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2a894c41db---morudolibegenekituruza.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607822a536364---noneloxebunoxeweposezu.pdfIn PDF document text
    • http://conflictfreeelectronics.com/ourprojects/chowki/UserFiles/renuka/file/wuwegurazanojodesofi.pdfIn PDF document text
    • http://orderbestwings.com/uploads/files/doxepuzivalakejosa.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=moderate+carbohydrate+dietPDF 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_off0000f376.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF376 10396 bytes
SHA-256: c0f48524db37eaf380aa826ccc6cd1849a132cd4b7d4ff056c5eb48bcd6199ba
font_01_sfnt_off00010b1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B1A 17048 bytes
SHA-256: 7378397f46242c5a4954ddead50cec9f7579834fe4ce3af6f8aff9141c7498f0
font_02_sfnt_off000137c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x137C3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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