Malicious PDF — malware analysis report

Static analysis result for SHA-256 547d2ea1c0340712…

MALICIOUS

PDF

244.9 KB Created: 2021-06-07 05:53:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: eb606030b1debee9594ec0989c5805d4 SHA-1: 24e7e6b379a12a3f188efa9af6ffdd3049a64995 SHA-256: 547d2ea1c03407120caeb8ba0109e39d8460d0f9a62c781cc4e85dd83d290f44
126 Risk Score

Malware Insights

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

The PDF contains multiple links pointing to compromised WordPress sites, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded URLs likely serve as lures to redirect users to malicious content hosted on these compromised sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9904

Heuristics 5

  • 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.
  • 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://crewmak.ru/uplcv?utm_term=what+is+the+cookie+clicker+cheat+name PDF link annotation
    • http://www.acefence.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ba2c5474ed---jadogojubudowemawip.pdfIn PDF document text
    • http://cfh2.com/clients/d/d2/d2a7b52150a7a947468b52e9b7560e3c/File/1770127804.pdfIn PDF document text
    • https://akarchlight.com/wp-content/plugins/super-forms/uploads/php/files/21436682dc637a7c276dea5679ecdbda/56805465105.pdfIn PDF document text
    • http://thm-holding.ru/wp-content/plugins/super-forms/uploads/php/files/089abbdc832cf09e4232551855191654/sodinusawop.pdfIn PDF document text
    • http://www.asslar.de/downloads/93829119506.pdfIn PDF document text
    • http://blueyee.com/upload/file/221505454657.pdfIn PDF document text
    • https://techson-cctv.com/upload/file/72457400088.pdfIn PDF document text
    • https://muratay.nl/userfiles/file/pufodigebiduzaposewof.pdfIn PDF document text
    • http://www.playerclub.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a9546b9a5e9---10964035588.pdfIn PDF document text
    • https://tirthmobile.com/wp-content/plugins/super-forms/uploads/php/files/9jchkdfelne52ncgdl28d9a3eh/49531625656.pdfIn PDF document text
    • http://serendipityorlando.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac68ae7b37f---97001578015.pdfIn PDF document text
    • http://nickels.design/ckfinder/userfiles/files/27950994003.pdfIn PDF document text
    • https://gmonlinestore.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609236fb49129---zesemetadamugogudivof.pdfIn PDF document text
    • https://donnasalon.ru/wp-content/plugins/super-forms/uploads/php/files/5b2068c4370105f19f49d3d0e9936c72/20903610275.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000354c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x354C9 5116 bytes
SHA-256: b11ea87904f083184f3c9576048003e476de1924f3119739fa073ab31b6b5e95
font_01_sfnt_off00036608.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x36608 5372 bytes
SHA-256: 6a1e8c4fe67b222aa0e895adf882a01b0239aa2c7071a0eb561c06d35f89a629
font_02_sfnt_off000378f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x378F2 17072 bytes
SHA-256: 35139e697d90cbdaa76e3264db6b97b1d79f983ad29d577153c1c56e2cc924ae
font_03_sfnt_off0003affc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3AFFC 16448 bytes
SHA-256: 1a87af829c04ce2e868786a70b4d4153a50821d2e69b6e46946ac6a97b2cf67d

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