Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd7880f04a963100…

MALICIOUS

PDF

85.8 KB Created: 2021-08-02 04:01:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-21
MD5: 9785cf0d1c594dc1df4baf2a01cae1d1 SHA-1: eade696ce0b4ee45654db8de826a1d05ca93b6c4 SHA-256: fd7880f04a963100e4b87ab24e9ad433b72ff5a54756424d62b3195752f12003
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The ML classifier and ClamAV detection strongly indicate malicious intent. The PDF contains numerous links, many hosted on compromised websites or disposable domains, suggesting a link farm designed to redirect users to malicious content. The presence of embedded URLs and the nature of the heuristics point towards a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://infrive.ru/uplcv?utm_term=dream+interpretation+snakes+while+pregnant PDF link annotation
    • https://khyatiinfotech.biz/ckfinder/userfiles/files/xisiparobe.pdfIn PDF document text
    • http://lalitas-thaimassage-spa.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a613e7166ad---sisori.pdfIn PDF document text
    • http://vegasoft.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1609220068ef5c---87161828971.pdfIn PDF document text
    • http://egonseetour.com/FileData/ckfinder/files/20210621_C40272EBA132F4CE.pdfIn PDF document text
    • https://baongochoa.com/upload/file/lipujexoxelitara.pdfIn PDF document text
    • https://www.rath-catering.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a01fe6c0175---daxanaribowunir.pdfIn PDF document text
    • http://trustarshida.co/cache/fck_files/file/bejowituvelamonukob.pdfIn PDF document text
    • https://gservicepz.com/wp-content/plugins/super-forms/uploads/php/files/ad346315cf22b48ab73829e8e4230670/74670605433.pdfIn PDF document text
    • https://drnanemilk.com/tctt/sites/aaa/file/wiminodokusetare.pdfIn PDF document text
    • http://johndanton.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/39335651310.pdfIn PDF document text
    • https://www.aceitedeoliva.com/wp-content/plugins/super-forms/uploads/php/files/459690a0b98627ab91562446e67420ac/maxinifuvule.pdfIn PDF document text
    • https://www.etbsupplies.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fd20ac3c46c---68337813072.pdfIn PDF document text
    • http://cancunday.com/travela/img/files/32448131916.pdfIn PDF document text
    • http://tcurryproperties.com/konadnew/userfiles/file/52418935010.pdfIn PDF document text
    • https://mdteam.se/ckfinder/userfiles/files/kujisugikozawupopile.pdfIn PDF document text
    • https://travels-ukraine.com/wp-content/plugins/formcraft/file-upload/server/content/files/160813ab1389d4---13157644510.pdfIn PDF document text
    • http://brighterhealthcare.co.uk/wp-content/plugins/super-forms/uploads/php/files/i0fcfu8hs11jeaur4r6glpptbb/61328570252.pdfIn PDF document text
    • http://agendatourvietnam.com/hinhanh/file/73062256328.pdfIn PDF document text
    • https://kanat.com/upload/ckfinder/files/71210131800.pdfIn PDF document text
    • https://ecoverservice.be/gallery/file/nalipoz.pdfIn PDF document text
    • https://wpsqld.com.au/wp-content/plugins/super-forms/uploads/php/files/35127329fb7f661bad224c066263bbc9/jukoxa.pdfIn PDF document text
    • https://charqueadaboavista.com.br/wp-content/plugins/super-forms/uploads/php/files/f5193b09b05d954157cdd0e5fd158ebd/delobuvuwiduwawuxane.pdfIn PDF document text
    • https://acethamessecurity.co.uk/wp-content/plugins/super-forms/uploads/php/files/7e04c904e1f9f24527065bfa2e0c74b4/najisoxozinagikadi.pdfIn PDF document text
    • https://miamiuniquelimo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e41a377c80---62750021430.pdfIn 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://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_off0000eea0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEA0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000106b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106B7 10880 bytes
SHA-256: 618a48eded1d905b7987d1ca7b59b56b1d1383dd7f9b7b2259091aea1f41a97c
font_02_sfnt_off00011fb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FB9 16032 bytes
SHA-256: 974aa23ee543e407600894c0c8de15c1dbc1538ec0e31943ca038f2a179f2e9d

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