Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e46ab1d9da28e7e…

MALICIOUS

PDF

74.9 KB Created: 2021-07-07 02:09:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: f464ac0d742239d402a863faed19dd91 SHA-1: e3738021befdd973cefc84cffce30be0709c75a0 SHA-256: 6e46ab1d9da28e7eeb6e9bcc5ae8951f6a6047f054ee8bcd5cb2cadc43688cd4
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The file contains a link farm pointing to numerous domains, many of which appear to be compromised WordPress sites or disposable hosting, suggesting an attempt to redirect users to malicious content. The presence of external URIs and link farms strongly indicates a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9827

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://wastran.ru/uplcv?utm_term=65+rmb+to+usd PDF link annotation
    • http://xn----8sbnbd9chja.xn--p1ai/userfiles/file/24589168541.pdfIn PDF document text
    • https://pass-eco-energies.com/ckfinder/userfiles/files/21020516601.pdfIn PDF document text
    • https://evenimentecastel.ro/wp-content/plugins/super-forms/uploads/php/files/li7e0thvb3t39j2qvgqc5q96lp/dukeru.pdfIn PDF document text
    • https://angkaganjil.com/contents//files/95532433402.pdfIn PDF document text
    • http://xn--e1aazeoc7d.xn--p1ai/images/shared/file/xutamesizozudoro.pdfIn PDF document text
    • http://alexlunacoach.com/img/editor/file/10880517473.pdfIn PDF document text
    • http://carrollcountylawyers.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/vafivedudarinolum.pdfIn PDF document text
    • https://www.goldenplanet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160da717f19773---darotojaduwurenejigasija.pdfIn PDF document text
    • http://sinara.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c0c9929b657---12268502907.pdfIn PDF document text
    • http://www.maoles.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c72f9721bd---58754041184.pdfIn PDF document text
    • http://dangkyidol.com/wp-content/plugins/super-forms/uploads/php/files/t5rsrkogsuc4dtd1r8q5thji51/86320249151.pdfIn PDF document text
    • http://gialtour.it/themes/userfiles//files/lulojadimejesuwewi.pdfIn PDF document text
    • https://kakvkusno26.ru/wp-content/plugins/super-forms/uploads/php/files/7f54fc0fa2e21c6b3644218ba7dc76fc/fabudegewag.pdfIn PDF document text
    • http://windmill-bv.com/userfiles/files/duzutidipuvafopetoxori.pdfIn PDF document text
    • https://estoniapools.com/contents//files/palufiwerumiwefo.pdfIn PDF document text
    • http://divapharma.com/uploaded/file/tebunaxub.pdfIn PDF document text
    • http://www.nanodrywash.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a93f9236f3a---bufavaz.pdfIn PDF document text
    • http://anaminfo.com/attachfile/file/60288022547.pdfIn PDF document text
    • https://eliteswimmingpoolsinc.com/wp-content/plugins/super-forms/uploads/php/files/g0dgcoc41et5ef2af8jcvflm33/litajoxufegofetusutu.pdfIn PDF document text
    • http://cristal-in.fr/userfiles/file/mutinu.pdfIn PDF document text
    • https://hcs1000.org/wp-content/plugins/super-forms/uploads/php/files/2f606e5b63460a3f44d5a0e66e91d135/57015675002.pdfIn PDF document text
    • https://www.paparazzirestaurant.com.au/wp-content/plugins/super-forms/uploads/php/files/592f8864e267b64b1a2643c8b2c70f4b/87207802271.pdfIn PDF document text
    • http://www.viksexteriors.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d8f5b5f098c---notanonemadofarugerejaf.pdfIn PDF document text
    • http://nousgarage.com/userfiles/file/35668158981.pdfIn PDF document text
    • http://www.stallionreadymix.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160ae71169ba8c---dezipivi.pdfIn PDF document text
    • https://www.auditek.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160aac26b7709b---wuxitekaf.pdfIn PDF document text
    • https://retentionstudentexperience.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607529f78fc67---bituxefagevikebusenele.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_off0000c2ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2AD 16968 bytes
SHA-256: b66ebe9ba2cc7dc8aa93bf5606979b661e101b0b084594795e22ed734bbba7bb
font_01_sfnt_off0000eef8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEF8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001070f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1070F 10320 bytes
SHA-256: 5ce1cb348196adb6b5417f52d153766e710141e7629c50d06ec3e39507193d8f