Malicious PDF — malware analysis report

Static analysis result for SHA-256 02e0ae0b5022be1c…

MALICIOUS

PDF

82.8 KB Created: 2021-09-20 15:21:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 285766fbc7a2901c82849b9875dce284 SHA-1: 1fde551cc1754f50003e4b6db2016fca210bbd27 SHA-256: 02e0ae0b5022be1cba1421eec1241765c3c0d3eaddcca3eb5b562706fbcc3e9e
164 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, many of which are hosted on compromised WordPress sites, suggesting a link farm designed to distribute malware. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. The presence of a 'download button' heuristic further supports the lure of downloading malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 7

  • 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.
  • 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 http://totaleclipsenv.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614654c7494d8---tomelujufabixu.pdf
    • http://www.hotel-margherita.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614641a7e32e2---jodivabuwebewevupalefito.pdf
    • https://ashleymongolia.mn/uploads/files/zulakibok.pdf
    • http://www.aragonemprendedor.com/userfiles/files/lifewuriberufiluniwotogow.pdf
    • http://terredellamagnagrecia.com/userfiles/files/30779235318.pdf
    • https://braviengenharia.com.br/wp-content/plugins/super-forms/uploads/php/files/4a2ato9918uu6h4a8a3nd40sub/32824827088.pdf
    • http://www.companyforte.com/imagenes/editor/file/jopujusan.pdf
    • http://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/d39e8bf3937b861051d60b15824b617d/39945269054.pdf
    • http://multi-accueil.fr/ressource/site-image/files/podiwizaxobuniwewomovebag.pdf
    • https://meritumptt.pl/dokumenty/file/pegizezoxaneboletaxonoman.pdf
    • http://fzsvybbs.at/userfiles/file/zagukaredulidulexi.pdf
    • http://www.saito-ken.jp/userdata/file/56505767813.pdf
    • https://hensuyenpqa.traigiongthuha.com/ckfinder/userfiles/files/gugusedezaruruti.pdf
    • http://duhochoangthanh.com/upload/files/85189473902.pdf
    • http://spartapr.com/images/upload/file/nudedaganixo.pdf
    • https://dynasty888.com/image/files/20210916_093517.pdf
    • http://tsrmvolontari.it/userfiles/files/golufutavesil.pdf
    • http://bc-arman.kz/ckfinder/userfiles/files/sogeremaf.pdf
    • https://editora-arara-azul.com.br/site/admin/ckfinder/userfiles/files/zewagitivijutasumevov.pdf
    • http://gotoippc.com/ckfinder/userfiles/files/povuwuxulij.pdf
    • http://www.vivelamusica.es/wp-content/plugins/formcraft/file-upload/server/content/files/16143a2a86c199---wibugut.pdf
    • http://agecarekorea.com/ckupload/files/lebomumizovut.pdf
    • http://net-marketing.hu/images/files/77242049740.pdf
    • http://wx-test.com/upload/ckimg/files/202109070543151065.pdf
    • http://aligokdemir.com/resimler/files/81973734871.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=business+tycoon+mod+apk
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d9ff.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xD9FF 16792 bytes
font_01_sfnt_off0000f211.bin
a865c86533b89bc19ccfab437c4fb856ad95f1e8f81c30952a69527de8717e25
pdf-font-stream PDF embedded font (sfnt) at offset 0xF211 19044 bytes
font_02_sfnt_off000123fa.bin
68e505dc6852f72b81632fd524adc86c39e385449b45ba1ec4cbb04564310f0a
pdf-font-stream PDF embedded font (sfnt) at offset 0x123FA 10888 bytes