Malicious PDF — malware analysis report

Static analysis result for SHA-256 229812eada2d3f24…

MALICIOUS

PDF

91.3 KB Created: 2021-09-04 02:11:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: df3f9a50593e58ee92efadc958a01d56 SHA-1: d1e893d0cbbd226e9c8f9eec4890006a18d07b86 SHA-256: 229812eada2d3f24165be96b5433e919b125aca5ab5b34d14349eecae6eeef77
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of external links, many of which point to compromised WordPress sites or disposable hosting, indicating a link farm designed to distribute traffic. ClamAV and ML classifiers flagged this PDF as malicious, specifically as a phishing trojan, supporting the assessment of malicious intent. The presence of numerous links, some on compromised infrastructure, suggests an attempt to lure users to potentially harmful destinations.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

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://anukulagrotech.com/userfiles/file/watuwulimudatamoxefuduwa.pdf In PDF document text
    • https://www.dekleinewerf.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609a9e609c2a7---gogopusesupaxaxixod.pdfIn PDF document text
    • http://fields-on-earth.com/22730729746.pdfIn PDF document text
    • http://www.finanzanlagen-honorarberatung.de/wp-content/plugins/formcraft/file-upload/server/content/files/16072bb1fa3074---pubot.pdfIn PDF document text
    • https://www.higher-energy-trampolineclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076b1c0a5629---mujalexexiluzijejogi.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606ef830d4357---85756263039.pdfIn PDF document text
    • http://www.mariabeckmann.com/fotos/uploads/files/rugowikes.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c938c7f26a1---kifaxivatusuwexilazipi.pdfIn PDF document text
    • https://drmiamiconnect.com/wp-content/plugins/super-forms/uploads/php/files/270d46dc248a77f1136988887ed9cd30/64536912364.pdfIn PDF document text
    • http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/mf2io95i1uge95p7efcd9or3e2/lavuwuw.pdfIn PDF document text
    • http://chromowane.com/userfiles/file/benarevodojopugulow.pdfIn PDF document text
    • http://maxtarget.by/ckfinder/userfiles/files/84203750228.pdfIn PDF document text
    • http://kryotherapie.net/neu/userfiles/file/bosebuxezexoxidowojaruror.pdfIn PDF document text
    • https://htfcompact.com/wp-content/plugins/super-forms/uploads/php/files/75ed26f5bdce4f0ab2d68c583230dd94/78644427257.pdfIn PDF document text
    • https://nhaban24h.com.vn/wp-content/plugins/super-forms/uploads/php/files/65bd77adoq02d0g9hfcc4oq1s4/56069182413.pdfIn PDF document text
    • http://xn--aknmedcal-wpbe.com/uploads/file/77288406857.pdfIn PDF document text
    • https://monyetmesum.com/contents//files/35352691868.pdfIn PDF document text
    • https://energooptima.hu/upload/File/17830670980.pdfIn PDF document text
    • http://hydrem.ru/images/file/61019234933.pdfIn PDF document text
    • http://thegreenlegacykeepers.com/clients/e/e8/e8dc17949b7ef813e9937e453902477f/File/kitolos.pdfIn PDF document text
    • https://www.ciabrini-immobilier.com/wp-content/plugins/super-forms/uploads/php/files/ji4gc2msa54erdsra8r409m1ts/21050477373.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=ambientadores+naturales+manualidadesPDF link annotation
    • https://cakamuzejs.riga.lv/ckfinder/userfiles/files/23249582536.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_off0000f9e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9E5 20168 bytes
SHA-256: e92f4964a4903de5251ee35b7e3c556cb45e5beec2cf9c25f53d2897d1597906
font_01_sfnt_off00012e00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E00 10632 bytes
SHA-256: 7c0fd9284ed94348d75266c233f928c817e6ad9163b30c84f8c3101c1101a848
font_02_sfnt_off0001464f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1464F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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