Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbcaaa0cec288518…

MALICIOUS

PDF

87.8 KB Created: 2021-07-30 20:04:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-20
MD5: e1c2de1585bdafebe2f58ff8a68379c1 SHA-1: 77e6ecccaa415b2d61cce61aab0f2c331356301a SHA-256: bbcaaa0cec2885186752853e5eda3bd61b4a1d3edacf04cebf1f67854f1fb0ff
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

This PDF was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. The document contains numerous links, many pointing to compromised WordPress sites or disposable hosting, suggesting it functions as a link farm. These links likely lead to phishing pages or further malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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 http://tfforming.ru/d/files/vorinaxeloro.pdf In PDF document text
    • http://bilagroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087158de5061---tujarefebamowi.pdfIn PDF document text
    • http://aprendanow.com/wp-content/plugins/super-forms/uploads/php/files/c9c9d2605045fa7cf2da1cdf78c7520e/sofejo.pdfIn PDF document text
    • http://gleneaglehoa.org/images/file/selew.pdfIn PDF document text
    • https://www.wikiwebagency.it/wp-content/plugins/super-forms/uploads/php/files/0a4fd202cff5be19f5703b9f1975e5f2/51172575379.pdfIn PDF document text
    • https://shreenathtechnologies.com/userfiles/file/34835289935.pdfIn PDF document text
    • https://drrajanmahtani.com/userfiles/files/32596690852.pdfIn PDF document text
    • http://btfa.tw/upload/files/darivodagiwifegalonug.pdfIn PDF document text
    • http://thuephotocopytaihanoi.com/upload/files/89825810018.pdfIn PDF document text
    • http://2016montemayorreunion.com/clients/e/e5/e530e98a7ee505477716bae2fe71cdef/File/tusinasukujuxuxapikolan.pdfIn PDF document text
    • http://picassogift.com/Uploadfiles/files/lanakarizebizozoxemo.pdfIn PDF document text
    • https://topclassgreenery.nl/images/file/76894679677.pdfIn PDF document text
    • https://njsolarpower.com/wp-content/plugins/super-forms/uploads/php/files/6f794de76f02ca0ba533ec244338aa6c/poxagarokikewobegebiwaro.pdfIn PDF document text
    • https://norservis.cz/files/files/wabaka.pdfIn PDF document text
    • http://gostium.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099100bb457e---68331204390.pdfIn PDF document text
    • http://mastrodibaglio.it/userfiles/files/rubozadujadirogixetena.pdfIn PDF document text
    • http://younewstoday.com/task/userimages/file/34322473359.pdfIn PDF document text
    • https://adbetelparaguay.com/wp-content/plugins/super-forms/uploads/php/files/681b87f2dfa7240b341bcc7666be1c0f/bagamalatefem.pdfIn PDF document text
    • http://cedresarquitectura.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607655857e397---balotirifofa.pdfIn PDF document text
    • http://golden-candies.ru/webroot/files/files/93800905924.pdfIn PDF document text
    • http://thaimassagemodel.com/ckfinder/userfiles/files/2218761269.pdfIn PDF document text
    • https://www.femregenx.co.za/wp-content/plugins/super-forms/uploads/php/files/3njr6thvu9gtne4631g7k6312g/13080533052.pdfIn PDF document text
    • http://hotelniagararimini.eu/userfiles/files/bifiliridomijele.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=motorola+mag+one+bpr40+programming+softwarePDF link annotation
    • 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_off0000f280.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF280 11120 bytes
SHA-256: 755d976a9b2a57f67cb1721987a9d72cb33dee2803ff71b4a9d39395aa9c46aa
font_01_sfnt_off00010c57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C57 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012469.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12469 17256 bytes
SHA-256: 64436e32c1e6434a4a040a0d83ef59ebafb1d4e1e817c19f5d01c96365e05b35

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