Malicious PDF — malware analysis report

Static analysis result for SHA-256 76ae0f701b02eeeb…

MALICIOUS

PDF

80.0 KB Created: 2021-08-26 17:37:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 6b649d8d664d6eb7b9b4741d2345b284 SHA-1: b863dbae1f132f3af2caec9456b6577d05ef317d SHA-256: 76ae0f701b02eeebe8435d3c235a5c24009c3cc0431e6303f863d67748ac411c
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. It contains numerous links pointing to various domains, many of which appear to be compromised websites or disposable hosting, suggesting a link farm designed to redirect users. The presence of external URIs and link farm heuristics indicates an attempt to direct users to potentially harmful content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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=2+laps+around+a+track+is+how+many+miles PDF link annotation
    • http://smclassof57.org/clients/34860/File/zojim.pdfIn PDF document text
    • https://shinyjewellers.com/wp-content/plugins/super-forms/uploads/php/files/i2v4hgujjmvu4cm3tgi2c81tc8/65174101745.pdfIn PDF document text
    • http://hgbs.de/userfiles/file/zagumibamafanizekigujuna.pdfIn PDF document text
    • http://manufim.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/1607d2b1169c05---zagodezebujo.pdfIn PDF document text
    • https://storage-in-motion.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e41893d8cc6---64605864032.pdfIn PDF document text
    • https://fa-vietnam.com/webroot/img/files/wobosebotegijevi.pdfIn PDF document text
    • http://czechdidgeridoo.com/admin/upload/file/33147688382.pdfIn PDF document text
    • http://objetivovender.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d27a0c73c9---jizobowavofasupadu.pdfIn PDF document text
    • https://we-plus.tw/ckfinder/userfiles/files/veluxuvomujarogabunim.pdfIn PDF document text
    • http://mis.nrru.ac.th/gradjournal/ckfinder/userfiles/files/dikixuxijaxoxakirefi.pdfIn PDF document text
    • https://kibledergisi.net/resimler/files/liwebuvezodekutumux.pdfIn PDF document text
    • https://udachi.co.th/wp-content/plugins/super-forms/uploads/php/files/3325scjlq4omab85gvv5ghj1s7/rosesuz.pdfIn PDF document text
    • http://libertyquad72.fr/userfiles/file/midaxufamikel.pdfIn PDF document text
    • https://learn-atdi.com/uploads/files/57379170334.pdfIn PDF document text
    • http://cafesezony.ru/fck_editor_files/files/71807303484.pdfIn PDF document text
    • http://diakmelo.hu/ckfinder/userfiles/files/rudagenijasite.pdfIn PDF document text
    • http://worksafeorg.com/wp-content/plugins/super-forms/uploads/php/files/clhove09r5gtbsosqkspvjapp4/2784635606.pdfIn PDF document text
    • https://www.3dreamchurch.com/wp-content/plugins/super-forms/uploads/php/files/6d2cd3bb4668971ee67e1d304ad8fe1d/pizawalabisukitozawek.pdfIn PDF document text
    • https://k2salight.com/wp-content/plugins/super-forms/uploads/php/files/b6a988c60caf8795e441a395f947a02b/donitu.pdfIn PDF document text
    • http://rayer.cn/d/files/xugojeladel.pdfIn PDF document text
    • https://www.ciabrini-immobilier.com/wp-content/plugins/super-forms/uploads/php/files/p1mtc87bfue7c5m8d1kjbmlrk9/5518817508.pdfIn PDF document text
    • http://wasserentkalkung.at/ckfinder/userfiles/files/veburomekowime.pdfIn PDF document text
    • http://tipiland.net/upload/file/tirakij.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_off0000d2cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2CF 17080 bytes
SHA-256: dc3e58c0e47a322ba5d7c0b7ae4437a848b52cce37c3e2cbb8614898918f0425
font_01_sfnt_off0000ffa5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFA5 11192 bytes
SHA-256: 371a4df823128202a5d4f62f8762adc22f4a7ce93e9e714cdfc040290040d02e
font_02_sfnt_off000119d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119D7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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