Malicious PDF — malware analysis report

Static analysis result for SHA-256 6abec0b49209954b…

MALICIOUS

PDF

80.3 KB Created: 2021-07-03 10:29:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-15
MD5: 7e07cc711fa52d20ed6033cec3f68ca3 SHA-1: 2ca01fafe8b1f1cd3359edf23c3f6a9f206ed9ef SHA-256: 6abec0b49209954bcc721f95aecf28b1b0bcadb8a390c554953e35976d8c5be6
156 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 as malicious. It contains numerous links to external websites, many hosted on compromised WordPress installations or disposable domains, suggesting a link farm designed to redirect users to malicious content. The presence of embedded URLs and the nature of the heuristics indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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://drafthe.ru/uplcv?utm_term=angie+piano+chords PDF link annotation
    • http://momsystem.ru/public/file/42371139372.pdfIn PDF document text
    • http://www.trimbleexpress.sk/wp-content/plugins/formcraft/file-upload/server/content/files/160a06a8d2833d---xolesir.pdfIn PDF document text
    • http://brmxn.com/userfiles/file/20210621231406_esyjg5.pdfIn PDF document text
    • http://planbmedia.hufiles/40449422270.pdfIn PDF document text
    • https://heykidsletscook.info/wp-content/plugins/super-forms/uploads/php/files/97926c0676f179d40c53b76bfc0261b4/meluramuzixuvemufogotikit.pdfIn PDF document text
    • https://www.goldenplanet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1608f39ceba02f---rufalepuxojizozupolawa.pdfIn PDF document text
    • https://big-cash.de/wp-content/plugins/super-forms/uploads/php/files/n9v0aj2rittv3annv64hv5d81g/jedavuz.pdfIn PDF document text
    • https://agrimal.pl/userfiles/file/givebamovinofarujaka.pdfIn PDF document text
    • https://www.tessilgiada.it/wp-content/plugins/formcraft/file-upload/server/content/files/160bd89a5ab9e7---wanajaliga.pdfIn PDF document text
    • http://bualuang101.com/backoffice/upload/files/67508715792.pdfIn PDF document text
    • https://www.andyselfstorage.co.uk/wp-content/plugins/super-forms/uploads/php/files/r5mm81r0jvm6fg2et5ku2p35hl/zogekogivakura.pdfIn PDF document text
    • https://prairieroseclothiers.com/FCKeditor/file/vagevoduzet.pdfIn PDF document text
    • http://alarcon-v.com/editor_upload_image/file/17014029362.pdfIn PDF document text
    • http://stlnsk.ru/uploads/file/65551601361.pdfIn PDF document text
    • https://www.olympusnorge.no/wp-content/plugins/super-forms/uploads/php/files/2knt5sqa5rkd48v4ne5u9ceie5/57188951283.pdfIn PDF document text
    • http://leap-egypt.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076d99f989ec---80794152047.pdfIn PDF document text
    • http://xn--365-pn7mwb654m2qn.com/ckupload/files/72608359227.pdfIn PDF document text
    • http://taeguektour.com/FileData/ckfinder/files/20210528_8788FF4949F0B7E4.pdfIn PDF document text
    • http://www.majorisinvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608f918f90525---75933140885.pdfIn PDF document text
    • https://www.areatransfers.com/wp-content/plugins/formcraft/file-upload/server/content/files/16097e8d041ea1---782611716.pdfIn PDF document text
    • http://fcv-bo.org/data/fcv-bo/userfiles/file/melunevivigane.pdfIn PDF document text
    • https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/8ce16ebb07fb73be32b20363506ee313/64265951096.pdfIn PDF document text
    • https://ncsccalgary.com/userfiles/files/54780700578.pdfIn PDF document text
    • http://www.justgiveahand.org/wp-content/plugins/formcraft/file-upload/server/content/files/160ac3b2aa6891---89569169221.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d4e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4E3 10628 bytes
SHA-256: 3c79e39cedbe0c90987b54fee0ce40ff35ad378556327538479a0603e8eac6f7
font_01_sfnt_off0000ece9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECE9 17784 bytes
SHA-256: 8064e4e400f824df98707ae08313bf65f48fe07763192b2df115d8c655507009
font_02_sfnt_off00011bfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BFA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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