Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6adef3f80436200…

MALICIOUS

PDF

82.3 KB Created: 2021-08-16 02:36:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: a0d5e243af53e590e1505fe9b4198fbd SHA-1: defbd92edcb19368b6c108aff5542320cb66b770 SHA-256: e6adef3f80436200af53ce368e708f13262afa7490c47a6f2408570e2879f511
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The file is identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous links to compromised websites and disposable hosting, suggesting an attempt to host malicious content or redirect users. The presence of a 'download button' heuristic further supports a lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9846

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://medvor.ru/uplcv?utm_term=james+bond+movies+list+in+tamil+dubbed+free+download+hd PDF link annotation
    • http://kaizenlife.com/ckfinder/userfiles/files/gewufibuzikejij.pdfIn PDF document text
    • https://agatanorek.com/files/file/7096618004.pdfIn PDF document text
    • http://utpcomp.ru/uploads/files/zapetisuxarezewoxigamivan.pdfIn PDF document text
    • http://forter.vn/hinhanh/file/satazapi.pdfIn PDF document text
    • http://www.bash.cl/media/file/sezepukosoxukikanow.pdfIn PDF document text
    • http://www.farparts.cl/wp-content/plugins/formcraft/file-upload/server/content/files/160a8aae4bf71f---52934918436.pdfIn PDF document text
    • http://ipjanah.ir/wp-content/plugins/super-forms/uploads/php/files/n9mqsi9av74903f9qou1t039c4/18313955305.pdfIn PDF document text
    • https://www.hagensmarketing.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c8013e8868---76150671609.pdfIn PDF document text
    • https://sandalyecenneti.com/wp-content/plugins/super-forms/uploads/php/files/9q55kldko364nqi8kc2t0a7k2q/rorewukakewedebovobomexi.pdfIn PDF document text
    • https://solarconsulting.org/wp-content/plugins/super-forms/uploads/php/files/548b74b2d2d6791fd0c054378f1f8c99/85240971694.pdfIn PDF document text
    • http://getawaynewzealand.co.nz/wp-content/plugins/formcraft/file-upload/server/content/files/160d671cca1fee---29126811116.pdfIn PDF document text
    • https://polinagerz.ru/wp-content/plugins/super-forms/uploads/php/files/u1tcmos62k4nmj2kkh47dn2au4/86995122565.pdfIn PDF document text
    • http://www.megasaludips.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608448bc8ba9a---jedijevuzi.pdfIn PDF document text
    • https://thejinglelab.com/wp-content/plugins/super-forms/uploads/php/files/iuf286dgvn8aqqt15mkjtpecc7/11964192501.pdfIn PDF document text
    • http://asalsold.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab17e1b416e---46710279067.pdfIn PDF document text
    • http://foto-video.ch/userfiles/files/savexovexemotesujeroxi.pdfIn PDF document text
    • http://cafesezony.ru/fck_editor_files/files/dokevenob.pdfIn PDF document text
    • http://itnetworkconsultingsf.com/helpdesk/app/webroot/img/userfiles/files/89830533032.pdfIn PDF document text
    • http://ne-moloko.ee/wp-content/plugins/super-forms/uploads/php/files/bf5a4167367b42de48ef547f1f2601ea/29954445135.pdfIn PDF document text
    • http://zaun-produzent.de/userfiles/file/nesozuxu.pdfIn PDF document text
    • http://anapro.com/ckfinder/userfiles/files/fisujoxutapupuxetirosezos.pdfIn PDF document text
    • http://happyland-nsk.net/ckfinder/userfiles/files/pugixojabakavinej.pdfIn PDF document text
    • https://www.kadeavenue.com/wp-content/plugins/super-forms/uploads/php/files/795610d76cad043bf728aed53ecda955/73820651031.pdfIn PDF document text
    • https://gearforfree.com/wp-content/plugins/super-forms/uploads/php/files/0coqbfjm2mbgjhr4669oih8ju2/fevoserokil.pdfIn PDF document text
    • http://luckyassessoria.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608a1a12ec0a4---sinitamubanubezuvo.pdfIn PDF document text
    • http://pvsystexperts.com/wp-content/plugins/super-forms/uploads/php/files/7vk13q2u80e8l2sg7m0kr127a4/kaserelefisirani.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_off0000dca1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCA1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f4b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4B3 17292 bytes
SHA-256: 1ff1514f9e685ab7aff231b84af3d70aab8d1bca3d0ebc09d033e701acdf0e6b
font_02_sfnt_off000121de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121DE 11004 bytes
SHA-256: 50846adf7c78ff2dbcaf3062d8a2442fe92864744c0275e6666a5b8aa0c2718e

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