Malicious PDF — malware analysis report

Static analysis result for SHA-256 889adaa83c6dddb2…

MALICIOUS

PDF

93.6 KB Created: 2021-06-30 21:27:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 7f9657e813b6731372a06993d27d45ad SHA-1: 045064bf3313bca33f93cf36b8ddbe01d69d9b94 SHA-256: 889adaa83c6dddb2e60408db0283bb5f0a7fbf338852d20f5f2aea6b59e66138
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating a phishing or malware distribution attempt. It contains numerous links, many pointing to compromised WordPress sites and disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of embedded URLs further supports the attack pattern of luring users to external, potentially harmful, websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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://infrive.ru/uplcv?utm_term=beating+the+business+cycle+pdf
    • https://psychotherapie-dr-albrecht.de/wp-content/plugins/formcraft/file-upload/server/content/files/16074645ed2be7---pumazuziwotuseza.pdf
    • https://www.parkgest.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1609d408f0d9be---21198901834.pdf
    • http://emotionpicturesfestival.gr/userfiles/file/85021499641.pdf
    • http://ahcxdq.com/uploads/file/201207503286.pdf
    • https://pacpartner.net/images_client//imagesfile/xafosonixurisoso.pdf
    • http://www.theagentpipeline.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0d863df566---peluxadetibozorugelox.pdf
    • https://haps.company/wp-content/plugins/super-forms/uploads/php/files/8t8hnqur1v5v6akpocv5hg6543/15104483575.pdf
    • http://adveotec.com/img/file/15125164213.pdf
    • http://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078316579c03---xazobutizuzajeta.pdf
    • https://nam.it/wp-content/plugins/formcraft/file-upload/server/content/files/160712ec9eb88b---1196633961.pdf
    • http://c2mag.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9f92f42879---80796029781.pdf
    • https://anfauglir.com/images/file/zusosexudiluwuf.pdf
    • https://maintogelonline.info/contents//files/76870435411.pdf
    • https://nuevocoach.co.uk/wp-content/plugins/super-forms/uploads/php/files/45f653e6bb8076a2cfe14bad8e04ff2f/xamoditawixawo.pdf
    • https://csom.cz/wp-content/plugins/super-forms/uploads/php/files/e2916d76cc1f94663833fcee8030ad7e/xejibowix.pdf
    • http://hrjok.com/uploadfile/file/55839797971.pdf
    • https://www.stamfordtaxis.com/wp-content/plugins/super-forms/uploads/php/files/b06n5mcftm27k0qumjdr3ven5e/vonojigafepevo.pdf
    • http://centronegozi.com/public/lunawodogugikuselafononeg.pdf
    • https://purebodycare.courses/wp-content/plugins/super-forms/uploads/php/files/i6a57smdidft6cjk2rh55bhm54/49261362175.pdf
    • https://earthideasawnings.com/wp-content/plugins/formcraft/file-upload/server/content/files/160739885b9ca1---kogudiso.pdf
    • https://spectrumohio.com/wp-content/plugins/super-forms/uploads/php/files/906426d963e1a8dd84b81c3630a92f6c/93814720854.pdf
    • http://compie.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16098806d81cfb---zusajuvolesinoludanulug.pdf
    • https://admonks.ru/wp-content/plugins/super-forms/uploads/php/files/bb307fed253af018608334bbcce3cbb1/pajakikasuzudujovusik.pdf
    • http://www.191seo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160db891733c1d---xaviponofosekuroxuga.pdf
    • http://bellezaeimagen.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160bb40f8169e5---62332974320.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000107a8.bin
1079dd54ddcebcfac8ecd807b122f141984a81d88cfae421a1a58b3a2c4c972a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x107A8 17896 bytes
font_01_sfnt_off00013604.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13604 16792 bytes
font_02_sfnt_off00014e1b.bin
d2c1a1e34d3aaef0d6cfefd72f536f267fe068d0e7bd261ae70b77cc665c8eef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14E1B 11084 bytes

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