Malicious PDF — malware analysis report

Static analysis result for SHA-256 205bfc6c709fdf95…

MALICIOUS

PDF

87.3 KB Created: 2021-09-01 12:48:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 3afdf33107c1fdf73a0db93a7ca7e253 SHA-1: 34b188dc649e8fe8a3b796b7b8e43347cdea7b68 SHA-256: 205bfc6c709fdf957fadceda11dd1be3f95f82ee7ea3dee6a643849cd9d81f45
156 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites or other potentially disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to lead users to phishing or malware distribution sites. The presence of link farms and compromised CMS uploads suggests a tactic to obscure the ultimate destination and leverage potentially trusted domains.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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 http://ashioke.com/images/library/File/62150454880.pdf In PDF document text
    • http://thepdaitruongphat.com/upload/ck/files/ginakazorekojofogimo.pdfIn PDF document text
    • https://comesa.com.pe/wp-content/plugins/super-forms/uploads/php/files/35bqvjo29hog1d6hd4gtcm9ke0/jawuboj.pdfIn PDF document text
    • https://space1500.com/wp-content/plugins/super-forms/uploads/php/files/c6f2130ad9604b0fafd6ad03e17a49f8/pidikodigojes.pdfIn PDF document text
    • https://purebodycare.courses/wp-content/plugins/super-forms/uploads/php/files/j65p4aeksakf1jb7me9t2its9d/xitewitowuvodapigupa.pdfIn PDF document text
    • http://www.saraviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094d26538d2c---siguzore.pdfIn PDF document text
    • https://inchiriereelicopterromania.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160ae9e5837bb4---56068118501.pdfIn PDF document text
    • https://formapolis.it/wp-content/plugins/super-forms/uploads/php/files/b0e969214b302fc69786c6c8f4839a8a/jexisumomejujigegok.pdfIn PDF document text
    • https://www.rath-catering.de/wp-content/plugins/formcraft/file-upload/server/content/files/16079295d5de10---nazulunigajez.pdfIn PDF document text
    • http://vksraja.in/fckeditor/upload/file/76859024639.pdfIn PDF document text
    • http://phenix-security.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16084d89651811---13690507976.pdfIn PDF document text
    • https://egyptsuntours.com/userfiles/files/nilafeguw.pdfIn PDF document text
    • https://michaels-limo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160703ebf2b75b---dekinepik.pdfIn PDF document text
    • https://www.bountyvacation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160abd8e6a3adf---24881992748.pdfIn PDF document text
    • http://www.playerclub.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160800bf86ed74---sipetomanuw.pdfIn PDF document text
    • http://usaoxin.com/userfiles/2021-7/file/63860921754.pdfIn PDF document text
    • http://restravel.ru/ckfinder/userfiles/files/fetadugesinesudelar.pdfIn PDF document text
    • https://gppacdatabase.net/userfiles/file/vumojokijatexopefizufozu.pdfIn PDF document text
    • http://wpchkg.com/upload/image/file/40515739477.pdfIn PDF document text
    • https://afriqueitnews.com/wp-content/plugins/super-forms/uploads/php/files/318c468394c9867cdbdd9a30f91569f0/vunonabulojuw.pdfIn PDF document text
    • https://petroblend.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bf528d1a0e2---17713825119.pdfIn PDF document text
    • http://aexpress.lv/index/images/up/file/96085940518.pdfIn PDF document text
    • https://chogmai.org/ckfinder/userfiles/files/68722792246.pdfIn PDF document text
    • http://taihegas.com/filespath/files/20210822104501.pdfIn PDF document text
    • https://topinsolventa.ro/userfiles/file/68936318811.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=great+gatsby+theoriesPDF 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_off0000f173.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF173 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010985.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10985 17456 bytes
SHA-256: b1e6d73c8562762f0fe36060242f17b964a03a8bdf22ead0948ab62174c44f3b
font_02_sfnt_off0001368c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1368C 10532 bytes
SHA-256: 6060374cdfcce75aeda51e91834a4c416d075718d91ad0747cb39f5cfe7d9da2

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