Malicious PDF — malware analysis report

Static analysis result for SHA-256 7414c6fcdac3a2f2…

MALICIOUS

PDF

203.4 KB Created: 2021-07-24 15:21:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: d50e643f35ad506238a5e976c7f5f024 SHA-1: 091db16e3152d96423f1096dfa833e699bcc2648 SHA-256: 7414c6fcdac3a2f25aabe7e1b4ac683bd46867050bfa163bc4df70e7c09bc430
126 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojanized PDF. It contains numerous links, many pointing to compromised WordPress sites, suggesting an attempt to redirect users to malicious content. The presence of external URIs and link farms to compromised CMS uploads strongly suggests a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8631

Heuristics 5

  • 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.
  • 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://davebakeragency.com/wp-content/plugins/super-forms/uploads/php/files/1e339031aca7bf5abfab4012839b2ba5/fidolipepunobefedijo.pdf In PDF document text
    • https://saftanton.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16083126e309fd---85311171473.pdfIn PDF document text
    • http://www.gunyagder.org.tr/wp-content/plugins/super-forms/uploads/php/files/1ei6db419p8drsa9pgv1brvvl5/zamigewubedawesenope.pdfIn PDF document text
    • http://perilatomsk.ru/ckfinder/userfiles/files/xazoko.pdfIn PDF document text
    • https://mebelpozakazu.ru/wp-content/plugins/super-forms/uploads/php/files/2ce1b400cde493cad7873691572ee0d1/71482075230.pdfIn PDF document text
    • http://dgxzz.com/uploadfile/file/zuzafa.pdfIn PDF document text
    • https://camile.vn/wp-content/plugins/super-forms/uploads/php/files/qsdsev5jdfts2j2j91kma43p6a/zoreripijolipozimujapoke.pdfIn PDF document text
    • https://gmnavarra.es/ckeditor/files/ruxitojisokanurananata.pdfIn PDF document text
    • https://halobysciton.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b6ae33c799---zotokelivele.pdfIn PDF document text
    • http://all-pass.com/folder/editor/file/69212267469.pdfIn PDF document text
    • http://assessmentinsight.com/ckfinder/userfiles/files/saminuv.pdfIn PDF document text
    • https://connect.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/07ce96258b156e6f94cf3a6b8f2ba560/salobobukozijutebabilewo.pdfIn PDF document text
    • https://kantankacreative.com/wp-content/plugins/super-forms/uploads/php/files/f1164e70453b9516677bdaa719a9f1f6/64204115179.pdfIn PDF document text
    • http://df-2.de/images/daten/file/tekinozujiv.pdfIn PDF document text
    • http://heibldr.hu/FCKfeltoltott/file/36731582373.pdfIn PDF document text
    • http://richmediahouse.com/admin/uploads/file/13547556334.pdfIn PDF document text
    • https://investainternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090027ed4165---34542073655.pdfIn PDF document text
    • http://elturo.ru/img/upload/files/91920745233.pdfIn PDF document text
    • https://bistro-8.com/wp-content/plugins/super-forms/uploads/php/files/1f0ed88fefe86ae3a3075d11ef9fc5ed/leremijulevugiporagida.pdfIn PDF document text
    • http://fouladsazanco.com/Upload/file/50376536425.pdfIn PDF document text
    • https://mudateconmigo.cl/wp-content/plugins/super-forms/uploads/php/files/fc1cf7f62450627848778fc2527b25d4/tijerikukimajapivezo.pdfIn PDF document text
    • https://enville.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b44eb506a09---10293381911.pdfIn PDF document text
    • http://alexsrmenchion.com/clients/b/bf/bf5401b25fe3457642f5a6f1150d5537/File/90673028463.pdfIn PDF document text
    • https://b2cexpressdemo.com/userfiles/file/nuzatewokemarexa.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=microsoft+flight+sim+2020+onlinePDF 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_off0002b95b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B95B 10856 bytes
SHA-256: 5a3f94772a8c96a1c7cea6b3c75ac69962ca99793d0ca006ee57c10ec03ac9e2
font_01_sfnt_off0002d248.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D248 19392 bytes
SHA-256: 19dbcdb2e5baa5f3c223e2c6eaf1c8c42b96fbbdec8911b73daaac9afaf867aa
font_02_sfnt_off0003059c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3059C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1