Malicious PDF — malware analysis report

Static analysis result for SHA-256 e32e881db86e373b…

MALICIOUS

PDF

91.4 KB Created: 2021-07-14 09:51:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: ea9e6b6dfebce7da261fac903853ba3f SHA-1: bdf2877fc2432d74ec680fa0d0c3708169c7c299 SHA-256: e32e881db86e373beb805007e4e5bac7d77aa9d33184c072f31bb60b50717573
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing or trojan distribution vehicle. It contains numerous embedded URLs pointing to compromised CMS upload storage and disposable hosting, suggesting it's designed to redirect users to malicious sites. The presence of PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics further supports its role as a link farm for potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9765

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://allytemp.ru/uplcv?utm_term=to+brainstorm+meaning PDF link annotation
    • http://doo-san.com/userfiles/file/20210529171205.pdfIn PDF document text
    • http://appletechsolutions.com/userfiles/file/pegaxurogorusowegalolas.pdfIn PDF document text
    • http://cafesezony.ru/fck_editor_files/files/24465214252.pdfIn PDF document text
    • http://xn--12cm8caae5d9a0a0a1dxk6dd.com/user_img/files/dazakagepedikidororotuwe.pdfIn PDF document text
    • http://nakakinpump.kr/fckeditor/upload/file/26718418236.pdfIn PDF document text
    • http://casaatlantida.com/userfiles/file///85110731716.pdfIn PDF document text
    • https://cremeconferences.com/wp-content/plugins/super-forms/uploads/php/files/9ee7d1bdc22ab3f0ac3c091fe3b8ef46/23161609829.pdfIn PDF document text
    • https://flylights.pl/wp-content/plugins/super-forms/uploads/php/files/qgla9ltkgpuhueveto0c4r6ac1/23786705689.pdfIn PDF document text
    • https://debcopharma.com/userfiles/file/10937994172.pdfIn PDF document text
    • http://www.commandinglife.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c51c436fcf---95957047215.pdfIn PDF document text
    • http://webinaris.eu/ckfinder/userfiles/publics/files/98233552652.pdfIn PDF document text
    • http://www.petersmetalstitching.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160754bf47e749---razimikunusatajixowoku.pdfIn PDF document text
    • http://dhsclassof70.com/clients/d/d1/d13f49183e6b2ef720c1f353b43de0f2/File/xovopano.pdfIn PDF document text
    • http://forglass.sk/userfiles/file/tovosetugomutabajexez.pdfIn PDF document text
    • https://sidexsideaudio.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084dcfa9c155---79517408815.pdfIn PDF document text
    • https://autotrilogy.com/wp-content/plugins/super-forms/uploads/php/files/bacd3b950d8277edb918f4fad27fdf8a/fuzaxubabulagujiruko.pdfIn PDF document text
    • http://byecook.com/ckupload/files/83186652288.pdfIn PDF document text
    • https://www.litesourcenc.com/wp-content/plugins/super-forms/uploads/php/files/0c370c0d69f9b61846e605d6fa6d66ce/zuliwo.pdfIn PDF document text
    • https://yourtuscanyguide.com/wp-content/plugins/super-forms/uploads/php/files/4e47s8ikqckvlkkbh34ug23vn2/sozuwijisatilabofala.pdfIn PDF document text
    • http://protech.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/160b3f4630be91---doxulenitanufokenipakixuw.pdfIn PDF document text
    • http://hoangduy.vn/vn/files/xolusudupuvelupajuzejel.pdfIn PDF document text
    • https://partnyor.az/userfiles/file/lasuwunomifigufinat.pdfIn PDF document text
    • http://accurateverdicts.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d40ff3cc7b9---46762965793.pdfIn PDF document text
    • http://www.cascinasorigherio.it/wp-content/plugins/formcraft/file-upload/server/content/files/1609d0131e9da5---jukumijabexinobif.pdfIn PDF document text
    • https://earthchartercities.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609e7b3116a48---64193344581.pdfIn PDF document text
    • http://ahcxdq.com/uploads/file/022309064575.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e94f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE94F 16060 bytes
SHA-256: 8bfc5e2f6383778b4716e60c732a7e5228106b692ca52c1f6b3c0b2892049825
font_01_sfnt_off0000fe62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE62 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011679.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11679 10508 bytes
SHA-256: fd40fec47fb3d14663b2be8e201578e88b849afe2eebbe29d254a3ae3df236bd
font_03_sfnt_off00012e61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E61 18716 bytes
SHA-256: 7b7b003703627deeea21ec173c22bb7830219254fa74029d0c07c7e15f22a1a6

Open this report in the interactive analyzer, or submit your own file for analysis.