Malicious PDF — malware analysis report

Static analysis result for SHA-256 e12083e2327e611a…

MALICIOUS

PDF

90.1 KB Created: 2021-08-30 10:23:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 20723d079fa0792f0ad0c910d7bc6ec0 SHA-1: 2af3c21844cd4af34c909854a4f570a4620e38a5 SHA-256: e12083e2327e611a1373c9020f4713aa2e121682e0f4ecedbd440a05f1c62668
156 Risk Score

Malware Insights

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

The PDF contains a link farm pointing to multiple compromised websites, indicating a phishing or redirection attempt. ClamAV and ML classifiers strongly indicate maliciousness, classifying it as a phishing trojan. The file's structure and embedded URLs suggest it's designed to lure users to external, potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9949

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 http://brothersaluminium.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/160ac79e76203f---3558037882.pdf In PDF document text
    • http://erdivigado.hu/userkepek/file/sisozexoronitifibemeputi.pdfIn PDF document text
    • http://stjconsulting.it/userfiles/files/6632735524.pdfIn PDF document text
    • http://www.sandzthabapanel.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160782525a4be4---34518382690.pdfIn PDF document text
    • http://daiichigroup.net/uploads/news_file/nimonusodoxe.pdfIn PDF document text
    • https://118highschool.am/wp-content/plugins/super-forms/uploads/php/files/57af7e08f529402ff78274fdbef27fb5/mojaferuwogipu.pdfIn PDF document text
    • http://rorolaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/58117323581.pdfIn PDF document text
    • https://armenia4d.com/contents//files/xepozoxapovovetidi.pdfIn PDF document text
    • http://2ds-creations.fr/userfiles/file/popusut.pdfIn PDF document text
    • https://www.mobytec.com.br/mobytec/wp-content/plugins/formcraft/file-upload/server/content/files/1609cd975dfa32---bitazimowakexexuvuzulemur.pdfIn PDF document text
    • http://foire-fromages-et-vins.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607832408954c---86565403059.pdfIn PDF document text
    • https://cms.blauraum.com/wp-content/plugins/super-forms/uploads/php/files/9ecc191f1591617792a5bd00d7555aa9/76374117561.pdfIn PDF document text
    • http://ajarnveerapong.com/UserFiles/file/vizibukeb.pdfIn PDF document text
    • http://wrtour.com/FileData/ckfinder/files/20210531_AEBCD13441F6CC5E.pdfIn PDF document text
    • https://otdelkamos.ru/wp-content/plugins/super-forms/uploads/php/files/abfefec9d41bd150812195534ffc204a/pikunosenuzowawi.pdfIn PDF document text
    • https://cpsguffanti.com/uploads/file/3520845692.pdfIn PDF document text
    • http://sevennews.com.br/ckfinder/userfiles/files/28517253131.pdfIn PDF document text
    • http://dobryremont.pl/ebobas/portal/app/webroot/img/tmp/file/16205871418303.pdfIn PDF document text
    • http://globalcenterhotels.com/bot/ckfinder/uf/files/76362508420.pdfIn PDF document text
    • https://adsbudget.net/userfiles/file/64497824844.pdfIn PDF document text
    • http://unipell.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161296cee2edc2---76015097931.pdfIn PDF document text
    • https://drmiamiconnect.com/wp-content/plugins/super-forms/uploads/php/files/8c6bdd458f2bc431e601b728370b3d91/6167881075.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=cramps+after+periodPDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e51a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE51A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fd31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD31 10540 bytes
SHA-256: e17f516db5e07e374a74f67ecb8dc2d1469b5c135b33c5d2b269d5488cf3dfbc
font_02_sfnt_off0001153c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1153C 16448 bytes
SHA-256: 0e4cde3d5bdd5452960de995a4807c8da4ec665155a9812e2f8e54e6c49b7878
font_03_sfnt_off00012c11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C11 18520 bytes
SHA-256: 6978af56b49d9a65174f7e2cfc37fc76018acbe5dd44d6143975f7e826af430b

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