Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d2e48165ab91001…

MALICIOUS

PDF

87.1 KB Created: 2021-07-19 18:44:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-22
MD5: 17247667d48eaa64b5bd771bc036de17 SHA-1: 4d2c9c8ef0a13486e10e7111ef1dd04d0ad1f871 SHA-256: 5d2e48165ab91001673ea4d9e4bd57739f77877448b7960916c7b7f5d07c9d00
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, directing users to multiple compromised WordPress sites and other potentially malicious domains. The primary goal appears to be directing users to external, untrusted resources, likely for phishing or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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://championsforchildren.org/wp-content/plugins/super-forms/uploads/php/files/a628b3096d6a63c07be912aa66cfddc4/lubotowusopomibedodumela.pdf In PDF document text
    • https://immobilgold.com/file/letenep.pdfIn PDF document text
    • https://backcountryplayground.com/wp-content/plugins/super-forms/uploads/php/files/b50ef10415081b826037129a550ef5e7/33363020584.pdfIn PDF document text
    • https://cashofferoregon.com/wp-content/plugins/formcraft/file-upload/server/content/files/160871ef139311---56935259718.pdfIn PDF document text
    • http://dr-onesrl.com/userfiles/files/lanebetilezafifatujam.pdfIn PDF document text
    • http://oneself.pro/wp-content/plugins/formcraft/file-upload/server/content/files/1609270cb9860e---fiwobase.pdfIn PDF document text
    • http://reelproductionshd.com/userfiles/file/13404831073.pdfIn PDF document text
    • http://chiangmai-clean.com/user_img/files/liluz.pdfIn PDF document text
    • https://tyeetomsfishing.com/userfiles/file/408435299.pdfIn PDF document text
    • http://www.vitrierbxl.be/wp-content/plugins/formcraft/file-upload/server/content/files/1607fe33f4a6b7---50010836936.pdfIn PDF document text
    • http://thevenetianmask.com/clients/71561/File/3526363730.pdfIn PDF document text
    • https://centar-znr-zop.hr/wp-content/plugins/formcraft/file-upload/server/content/files/16086056f8c179---6652104717.pdfIn PDF document text
    • https://biodent.ro/m4fm_files/m4news/ck-uploads-files/89411184630.pdfIn PDF document text
    • http://thegreenlegacykeepers.com/clients/e/e8/e8dc17949b7ef813e9937e453902477f/File/5543867533.pdfIn PDF document text
    • http://asupuro.com/upload/save_image/files/54723376912.pdfIn PDF document text
    • http://theclubburger.com/uploads/files/bawikiv.pdfIn PDF document text
    • https://cald-lighting.com/wp-content/plugins/super-forms/uploads/php/files/dc6f46cc7e25707580729eb490010976/wijepakap.pdfIn PDF document text
    • http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/q49edigttiiud8rgkf4m7eijo4/22831082239.pdfIn PDF document text
    • https://sodigital.it/wp-content/plugins/formcraft/file-upload/server/content/files/160bf841da7e54---saruruted.pdfIn PDF document text
    • http://discarga.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c514085b83b---50997014089.pdfIn PDF document text
    • http://dostavkaturov.ru/files/file/61683748690.pdfIn PDF document text
    • http://www.findvoters.com/userfiles/file/kugukapadenemebevesevuja.pdfIn PDF document text
    • https://dmvassociates.com/wp-content/plugins/super-forms/uploads/php/files/8f731e178e5cc4fc35d0d6a718c7464c/22947576795.pdfIn PDF document text
    • http://cuoredicane.it/userfiles/files/wemexefebajajijipuroj.pdfIn PDF document text
    • http://www.agrosystem.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1609bef9e33e6b---lisizaserefida.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=council+of+trent+and+counter+reformationPDF 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_off0000f257.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF257 10600 bytes
SHA-256: 0d7d842bd54403aefd85fe65e5474351f201672085a5b4880fde52204114d62b
font_01_sfnt_off00010a8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A8B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001229d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1229D 17080 bytes
SHA-256: 0a0d9d210efd40481cd333a58e3cd0ef76322b27927e392f1896cde9d6c0ba31