Malicious PDF — malware analysis report

Static analysis result for SHA-256 56e7071d183ee074…

MALICIOUS

PDF

72.9 KB Created: 2021-06-23 06:57:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 33df61dca888603ed739d93be24c90f5 SHA-1: 7730ee17ed95e78c686143950bcb0a7ce66cac74 SHA-256: 56e7071d183ee074d105f23a5ff61f7522aa63879df67a422e25c187a7d63a7e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous links to compromised websites and disposable hosting, many of which are designed to mimic legitimate services or provide search engine optimization benefits. The presence of a ClamAV detection for 'Pdf.Phishing.Trojan' and ML classifier flagging strongly indicates malicious intent. The document body, though heavily obfuscated, contains strings related to movie streaming, suggesting a lure to trick users into visiting malicious sites for potential phishing or malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://inwebjor.ru/uplcv?utm_term=kanchana+2+telugu+movie+watch+online PDF link annotation
    • http://xn--pr3b03lcdvwu9dpynqkc.com/DATA/file/20210618202407.pdfIn PDF document text
    • http://fantalife.nl/userfiles/file/16790865308.pdfIn PDF document text
    • https://www.generalutilities.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072f84e90ec9---gumuxujaki.pdfIn PDF document text
    • https://www.lenoir-elec.com/wp-content/plugins/super-forms/uploads/php/files/7slniugkbvnfdfpfhlfsto58e3/muwavez.pdfIn PDF document text
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/1608a34c2977e7---gijoseduxopepiru.pdfIn PDF document text
    • http://wooshin.kr/uploaded/file/61168423560a4c12f8171d.pdfIn PDF document text
    • http://pvsystexperts.com/wp-content/plugins/super-forms/uploads/php/files/rehdk6hgk9pukc473g9hgevav3/mivepamiferexigim.pdfIn PDF document text
    • https://lokmangal.co.in/wp-content/plugins/super-forms/uploads/php/files/e10749bf817372dcb535542c3b205b6e/27451696663.pdfIn PDF document text
    • http://secretinvitation.net/images/files/18115099653.pdfIn PDF document text
    • https://www.dishdivvy.com/wp-content/plugins/super-forms/uploads/php/files/6510002093759560708e36e4f6e672a5/jawejexarafep.pdfIn PDF document text
    • https://dalilak1.com/userfiles/file/nevali.pdfIn PDF document text
    • http://www.virtualaid.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1609b4c99601e2---zogopijowikadazoridon.pdfIn PDF document text
    • http://pileshoppen.dk/userfiles/file/xurevazilul.pdfIn PDF document text
    • https://studiogreenwich.ru/wp-content/plugins/super-forms/uploads/php/files/37e781322909d2709427d66dbbf01c28/rosovixovunesajiwufu.pdfIn PDF document text
    • https://www.ayersworthglen.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072b0e5d598f---437845610.pdfIn PDF document text
    • https://contabil-fiscal.ro/mm/file/pajorugogojozaj.pdfIn PDF document text
    • https://freedomhypnosisnyc.com/wp-content/plugins/super-forms/uploads/php/files/1a89b1f5653c24a72612311b3a871931/32831619715.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF6D 5192 bytes
SHA-256: 41104d5b6c5c9cf7c2b2ab11b6318170a8a2b2567e1250960da159f8a7625531
font_01_sfnt_off0000f112.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF112 10968 bytes
SHA-256: dc68794ea35a6b29294f90af04f7805b38041541aa2395753ace4dc3542bd8d4