Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b2007f4afbcd37a…

MALICIOUS

PDF

92.5 KB Created: 2021-07-16 11:15:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-15
MD5: 3152c67dd5bb81300442caef589e9490 SHA-1: 91ed9e76bce0c76b38d2582a94ff3f9ea5b2d5bf SHA-256: 3b2007f4afbcd37a95fde812501b4dda07d141e4dca6200e95b454dc7d4a482f
156 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics reveal it functions as a link farm, directing users to compromised WordPress upload storage and other disposable hosting sites. The embedded URLs, such as 'https://drafthe.ru/uplcv?utm_term=prolapse+after+c+section', are likely used for phishing or to download further malicious content.

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://drafthe.ru/uplcv?utm_term=prolapse+after+c+section PDF link annotation
    • https://sv-fin.ru/wp-content/plugins/super-forms/uploads/php/files/e2c546d9df481a16979eef811b3908a2/72409045731.pdfIn PDF document text
    • http://bpabv.nl/uploadfiles/file/57658433874.pdfIn PDF document text
    • http://www.theagentpipeline.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071add1dbed4---vokuvugubuxava.pdfIn PDF document text
    • https://www.charityweiss.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609368c30e495---labowiposemabe.pdfIn PDF document text
    • https://plswa.com/wp-content/plugins/super-forms/uploads/php/files/0db3988a2ca06fb463913bbc86efac54/wufazonewox.pdfIn PDF document text
    • http://thevelascofamily.com/clients/11614/File/rapukadajix.pdfIn PDF document text
    • http://igabana.com/upfolder/e/files/20210611230924.pdfIn PDF document text
    • https://www.beachesbrewing.com/wp-content/plugins/super-forms/uploads/php/files/b4b795c95cdc1bacc763d4dead8b5860/jujijepuwosejizegerafu.pdfIn PDF document text
    • http://geology.ie/wp-content/plugins/formcraft/file-upload/server/content/files/160807cf128158---ruzagovaxanilotuxe.pdfIn PDF document text
    • http://moveisgarciadigital.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608badbe21f67---mixenimurawopawu.pdfIn PDF document text
    • https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/1412761e724bad627e7217f66d60af6d/12514982085.pdfIn PDF document text
    • http://eotp.info/sites/default/files/fck/file/vosuxeforuwoz.pdfIn PDF document text
    • https://tabularasa.lv/sites/tabularasa/uploads/documents/files/12187933705.pdfIn PDF document text
    • http://coffee33.ru/archive/file/9081428665.pdfIn PDF document text
    • http://haciogullari.com/depo/sayfaresim/file/74983623689.pdfIn PDF document text
    • https://www.gasserbush.com/wp-content/plugins/super-forms/uploads/php/files/f7c79a5032166b7d49ac7efee4daf140/rolokatuve.pdfIn PDF document text
    • https://freedomtampons.com/wp-content/plugins/super-forms/uploads/php/files/f36cdd5d9c03581783d5d1023d211661/64116776311.pdfIn PDF document text
    • http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/68dc54ddbcc866adb29f8c201b83238f/1697333069.pdfIn PDF document text
    • http://ahkjt.com/upfile/file/kuminobetewejofezode.pdfIn PDF document text
    • http://delshadian.com/public/userfiles/file/95403384840.pdfIn PDF document text
    • https://www.idahomedia.com/wp-content/plugins/super-forms/uploads/php/files/3e2efcf8ff5fe855bc50fd832188363c/jutarodo.pdfIn PDF document text
    • https://afd.me.uk/wp-content/plugins/super-forms/uploads/php/files/lbd34nmllc4m9e7qvs218kv3s3/zutawuwoliretofa.pdfIn PDF document text
    • https://www.frankreich-ferien.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160ac02151fa75---6591216186.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_off000107f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107F6 10472 bytes
SHA-256: 78c7ebbb8e86b191021e020aec2aba1027affcdb06d0597f876bb24417f0e4cf
font_01_sfnt_off00011fd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FD7 17072 bytes
SHA-256: b6b9a186bde87b2dbc5c1ca19c75a0b114300f4295d9c3ee320f676b35619e9a
font_02_sfnt_off00014c8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14C8B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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