Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ffc189f42f83c4e…

MALICIOUS

PDF

101.9 KB Created: 2021-09-07 19:51:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 87bd71d48970c5e5c8f905798e4d0e5a SHA-1: c343c18dcaaf2e74dc3c40d85ea933007978340e SHA-256: 0ffc189f42f83c4e1ebaffea240f463d9b4359234ac139f79ae100c2e1e56e49
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are hosted on compromised WordPress installations or disposable domains, indicating a phishing or malware distribution attempt. The ClamAV detection and ML classifier strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

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://catamma.ru/uplcv?utm_term=peter+pan+summary+pdf PDF link annotation
    • https://massagetheory.ca/wp-content/plugins/super-forms/uploads/php/files/e8a8d502f871af92c30801c2e5fbf23b/tuzexebiwowedorolaxe.pdfIn PDF document text
    • http://gospel-pour-100-voix.com/fichiers/newsletter/file/74948810386.pdfIn PDF document text
    • http://amtusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607384eda6f94---pigosasiki.pdfIn PDF document text
    • https://elitteaccesorios.com/wp-content/plugins/super-forms/uploads/php/files/3cjsh0tog4vctlen75v6rd8u12/vologikepex.pdfIn PDF document text
    • http://www.nanodrywash.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bf68677218---gimopixosabi.pdfIn PDF document text
    • https://grancom.by/upload/docs/59954201425.pdfIn PDF document text
    • http://akicgiyim.com/userfiles/file/jejodogodizadozid.pdfIn PDF document text
    • https://maviet.vn/upload/files/kibifuboxoxoxukimexisan.pdfIn PDF document text
    • http://www.nanodrywash.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e6fd427c64---dowigeximesuwofumoxeti.pdfIn PDF document text
    • http://thebookmarkcafe.com/uploads/files/woneramomijus.pdfIn PDF document text
    • http://wecans.net/_UploadFile/Images/file/28658892308.pdfIn PDF document text
    • https://mbzl-pro.xyz/web/img/podborky/files/nexotabuwipero.pdfIn PDF document text
    • http://rethabise.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160cb54dfb83dc---netafekopefato.pdfIn PDF document text
    • http://currycornersugarland.com/admin/images/file/josopulewuvujixe.pdfIn PDF document text
    • http://www.theagentpipeline.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad8d6bb0f68---41286442104.pdfIn PDF document text
    • http://arcomproltd.com/userfiles/file/85287027187.pdfIn PDF document text
    • https://www.davidcosz.de/wp-content/plugins/super-forms/uploads/php/files/kg3563nns8ioacnn7go4739lph/kelemojixivivako.pdfIn PDF document text
    • http://heryeryesil.com/resimlerfiles/82386172378.pdfIn PDF document text
    • http://comp-art.ru/userfiles/file/bukagi.pdfIn PDF document text
    • https://lotteppta.com/beta/assets/file/morizatixirijoxejaguj.pdfIn PDF document text
    • https://digireg.es/upload/85266716780.pdfIn PDF document text
    • https://jclifeschools.org/wp-content/plugins/super-forms/uploads/php/files/e8b0a519b358f79e4439d66bed1e4475/76902283719.pdfIn PDF document text
    • https://angel-juicer.com/FileData/ckfinder/files/20210621_D05DD27E518604C7.pdfIn PDF document text
    • https://motionslam.com/wp-content/plugins/super-forms/uploads/php/files/6609b62eebdbab2d122e5c29c364b273/sejitokapuzugugevumub.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_off00012954.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12954 18440 bytes
SHA-256: d4e32a559eccf27112c4054ffe204590531a518992112c1db5db638d26869597
font_01_sfnt_off00015955.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15955 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001716c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1716C 10616 bytes
SHA-256: a00693d72ce5fee25eb49dbb6c5628108f1d395e6dd7c3b42761f5449b831dfc

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