Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bae788c1477a22c…

MALICIOUS

PDF

89.5 KB Created: 2021-07-02 01:21:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: fbb2a05554c76558ccc1e82ad46238bd SHA-1: 7ec6f66a745708113a69568fcfc5bb36d52993e0 SHA-256: 2bae788c1477a22ca189276803a44fc53a7e00ed0ef868f552f98fbcce374630
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier, indicating malicious intent. It contains a link farm pointing to numerous domains, many of which appear to be associated with compromised WordPress installations or disposable hosting, suggesting a phishing or malware distribution scheme. The presence of external URIs and link farms strongly suggests the document is designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://catamma.ru/uplcv?utm_term=exchange+rate+sar+to+php PDF link annotation
    • http://praguetransfer.com/files/file/pijek.pdfIn PDF document text
    • https://www.accidentinjuryalbuquerque.com/wp-content/plugins/super-forms/uploads/php/files/bbsf3k52sv5h9a81ot4igoudcj/56721168867.pdfIn PDF document text
    • https://inchirieriavioane.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160d688bc5b762---wuzodipasafaxasiga.pdfIn PDF document text
    • http://www.gaviprintpack.com/wp-content/plugins/formcraft/file-upload/server/content/files/160adb2a858066---8318636115.pdfIn PDF document text
    • https://casabresciani.it/uploads/file/didisusakunotak.pdfIn PDF document text
    • http://www.predoisiasociatii.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1609ef727a5109---62636637541.pdfIn PDF document text
    • http://yishiweb.com/upfiles/files/20210615_180537.pdfIn PDF document text
    • http://palyavalaszto.hu/teszt/upload/file/pukowifunibemuwamat.pdfIn PDF document text
    • http://www.biotanika.pl/upload/file/vasajitopejusuxosu.pdfIn PDF document text
    • https://inlandautorepairmurrietaca.com/wp-content/plugins/super-forms/uploads/php/files/54b61c84f61337a525f414b364751ec0/29717461325.pdfIn PDF document text
    • https://ph2020.org/FCKeditor/file/20278971865.pdfIn PDF document text
    • https://chameleoncoupons.com/adgprocessing/uploads/files/23686206389.pdfIn PDF document text
    • http://stroynerud-sm.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160d4032e0467f---92228434017.pdfIn PDF document text
    • https://gradeagroup.com/wp-content/plugins/super-forms/uploads/php/files/4htpftaincvcpb54lml6jl9sd2/79930268567.pdfIn PDF document text
    • https://www.sabiamente.es/wp-content/plugins/formcraft/file-upload/server/content/files/16070f1e50ecd8---marepesogux.pdfIn PDF document text
    • http://hevolta.com/upload/file/rojironofegaxukefokikil.pdfIn PDF document text
    • https://electrabicycles.pl/app/webroot/uploads/file/16218238982078.pdfIn PDF document text
    • https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/ccf7c305f60190bab5bed3b169d449fc/rozegakafakirofejigon.pdfIn PDF document text
    • https://www.cukoyem.com.tr/wp-content/plugins/super-forms/uploads/php/files/r2liuqdjmj4cit4ff5tmgcte15/xapanawumakoxuf.pdfIn PDF document text
    • http://pavcargo.ru/wp-content/plugins/super-forms/uploads/php/files/ac6eddae74cc80778a4e95fe007c26e7/pigepowalijev.pdfIn PDF document text
    • https://hps-gruppe.com/wp-content/plugins/super-forms/uploads/php/files/qmserf8tspcajupvvn8l7s4084/75997511671.pdfIn PDF document text
    • https://www.beadvised.co.uk/wp-content/plugins/super-forms/uploads/php/files/ff5b23528e87b83b15ae7e0f40af3af7/bubobebogotamorapexavipur.pdfIn PDF document text
    • http://fonnepal.org/userfiles/file/47633222105.pdfIn PDF document text
    • https://www.mclarenpress.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b978a300239---20919848761.pdfIn PDF document text
    • https://almuhja.net/ckfinder/userfiles/files/97003506048.pdfIn PDF document text
    • https://detectiveoffice.net/userfiles/file/rapimetitagegamokegim.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_off0000fa66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA66 10600 bytes
SHA-256: 6508d23d3cf60d1fffc605483eb2bad0cc2553d629489e9be4a8ea56c239e82a
font_01_sfnt_off000112a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112A4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012ab6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12AB6 17528 bytes
SHA-256: 315fa5ba41b540b5578bab2758de295faf96a9855e22b32f082a7bc0993e3478

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