Malicious PDF — malware analysis report

Static analysis result for SHA-256 60056951a4b962e5…

MALICIOUS

PDF

92.6 KB Created: 2021-09-17 17:26:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 9eb3f1e7d29ff9dc10676515c87b567b SHA-1: f6e536e2547990a9946ce2cd9d9fbb251913ef44 SHA-256: 60056951a4b962e5226c74f28fc2eed0612782c3a394ce95c4405f1d37cb9747
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected by ClamAV as Pdf.Phishing.Trojan and an ML classifier flagged it with high confidence. The PDF contains numerous embedded URLs, many of which point to suspicious domains and are likely part of a link farm designed to obscure the true destination. The presence of a 'download button' heuristic further suggests a lure to trick users into downloading malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://playerpress.com/ckfinder/userfiles/files/lezarodubirigozurawom.pdf In PDF document text
    • https://renfrewareahealthvillage.ca/ckfinder/userfiles/files/70069248031.pdfIn PDF document text
    • http://giadinhlaurenso.org/upload/files/sekunekakelavogo.pdfIn PDF document text
    • http://itena.si/uporabnik/file/luriv.pdfIn PDF document text
    • http://fongyoskert.hu/userfiles/files/9555914721.pdfIn PDF document text
    • https://uangraja.com/contents/files/rigajobo.pdfIn PDF document text
    • http://soncongnghiepjotun.com/media/ftp/file/sigixukinumeseza.pdfIn PDF document text
    • http://ceroki.com/image/files/novujutifuxusive.pdfIn PDF document text
    • http://www.hgekc.com/media/userfiles/file/wagivalavubeminonu.pdfIn PDF document text
    • http://citra.cl/userfiles/file/97056516544.pdfIn PDF document text
    • http://oecschool.com/userfiles/file/50610452902.pdfIn PDF document text
    • http://mottaing.eu/userfiles/files/zuzezak.pdfIn PDF document text
    • http://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135570d4286e---89918495567.pdfIn PDF document text
    • https://ipssecurityconsultants.com/ckfinder/userfiles/files/20823239909.pdfIn PDF document text
    • http://igabana.com/upfolder/e/files/20210909190054.pdfIn PDF document text
    • https://magerp.org/upload/files/tatiribixiwipalorul.pdfIn PDF document text
    • https://purevdavaa.mn/uploads/ckfinder/files/rutomuvedabigineladag.pdfIn PDF document text
    • http://acetuitioncentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/161410159df44e---bipisutudapebova.pdfIn PDF document text
    • http://ateliergermain.org/sites/default/files/file/fojenasotipotoxif.pdfIn PDF document text
    • https://mimpishiodua.com/contents/files/87081896261.pdfIn PDF document text
    • http://www.radio-kum.si/data/files/jituzodanojakatenokatag.pdfIn PDF document text
    • http://badischer-kunstverein.de/ckfinder/userfiles/files/seluvok.pdfIn PDF document text
    • http://akinmedikal.com/uploads/file/50602763022.pdfIn PDF document text
    • https://dbhattacharjee.com/ckfinder/userfiles/files/19568527765.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=battle+realms+for+androidPDF 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_off0000fe2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE2D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001163f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1163F 20856 bytes
SHA-256: df674805624533993eabe8a1a966a13227871a892eac1885721c91ad35efb8ed
font_02_sfnt_off00014c93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14C93 10568 bytes
SHA-256: 844c9070028ccdaff2bae85a3154cecac7530f88117a1fa8f3ae2bd46d0b0aad