Malicious PDF — malware analysis report

Static analysis result for SHA-256 00d0e855c99904e9…

MALICIOUS

PDF

76.8 KB Created: 2021-09-01 10:12:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 2f4ab990d1ef2756eb338e16fb3a5788 SHA-1: 7ea3e5c22f023a5f2239a8192a9a74cb425ce063 SHA-256: 00d0e855c99904e97228e21e3eeb27c913226af04bbb3b878205e49f20a1fc27
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, specifically identified as a phishing or trojan distribution attempt. It contains numerous links pointing to compromised WordPress sites and disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of these links and the overall structure strongly indicate a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://pixomot.ru/uplcv?utm_term=i+m+getting+married+in+the+morning PDF link annotation
    • http://niengrangchuyensau.com/upload/contentFile/file/37852693192.pdfIn PDF document text
    • http://cortabellanews.com/userimages/64409129743.pdfIn PDF document text
    • https://moma-restaurant.com/wp-content/plugins/formcraft/file-upload/server/content/files/160be088364ba2---75704751026.pdfIn PDF document text
    • https://cursosgratuitosonline.es/wp-content/plugins/super-forms/uploads/php/files/1k8rkjhp4h78k78jcr4egg66f2/ginadonipovodupuban.pdfIn PDF document text
    • https://felix-schulze.biz/wp-content/plugins/super-forms/uploads/php/files/efoi1akqkiphes70bbu0jsqood/52136557878.pdfIn PDF document text
    • https://sketchup360.vn/wp-content/plugins/super-forms/uploads/php/files/4m4m249k5r6m6m6h6h12pkeugv/wumurukixutuvojenuwex.pdfIn PDF document text
    • https://protechlighting.com/wp-content/plugins/super-forms/uploads/php/files/cc454c184ec35d0a14b0ca7143e9d955/33957376571.pdfIn PDF document text
    • https://www.ferienhof-schneider.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bdb46c2de5e---loganuw.pdfIn PDF document text
    • http://archgeo-leszno.pl/uploads/userfiles/files/dulopepenomo.pdfIn PDF document text
    • http://www.caslyn.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160731aace7be9---xewum.pdfIn PDF document text
    • https://adlinefor.com/home/webagen/public_html/korn/data/file/jimolalisagu.pdfIn PDF document text
    • http://blissworldbeauty.com/newerac2c/userfiles/file/zinafevubik.pdfIn PDF document text
    • http://countrysquirefoods.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608cc7b0e842f---wemolomoweredaz.pdfIn PDF document text
    • https://blindnow.com/userfiles/file/watumubuxavasixojefiwoso.pdfIn PDF document text
    • http://www.linkkorea.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/160b06a9eb2768---8331679241.pdfIn PDF document text
    • https://go2germany.ru/files/file/dojoramixininixetude.pdfIn PDF document text
    • http://www.primalegal.eu/wp-content/plugins/super-forms/uploads/php/files/9tgk91khtdkhm2bpgf9r8sec27/zijowavuligapivazemo.pdfIn PDF document text
    • http://etasystem.net/userfiles/files/dobonejo.pdfIn PDF document text
    • https://www.davinci.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16080ea28df332---nerodema.pdfIn PDF document text
    • https://regeneracion-capilar.com/wp-content/plugins/super-forms/uploads/php/files/15ef62b835d0bc6baf666e56493c7a40/32758231620.pdfIn PDF document text
    • https://fitnessrev.net/wp-content/plugins/super-forms/uploads/php/files/0qmabtvjhp0nqjil362eknbvnj/woduronixoxif.pdfIn PDF document text
    • https://hoanghaie.com/Images_upload/files/51071474463.pdfIn PDF document text
    • http://starrsgazette.com/admin/images/file/13470402434.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_off0000c6c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6C7 10432 bytes
SHA-256: 4166460232154f2601b6eb78d67ce460af18d1af723d65b163713b7154a0771b
font_01_sfnt_off0000ddf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDF8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000f60a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF60A 17464 bytes
SHA-256: 6c28488ef5b6e6bd77e99ad693a498f4dbfa93bb1e8e77104504884715332d0e