Malicious PDF — malware analysis report

Static analysis result for SHA-256 e18eed36e264cdc2…

MALICIOUS

PDF

96.0 KB Created: 2021-09-06 06:49:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 59586014d264c127e363601b7accfc25 SHA-1: d9c44026c10cc2be150f41812331c0ed57b03596 SHA-256: e18eed36e264cdc281572c0c3a7266b66ee844098202d14df2619bc58738d714
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites. This suggests the document is designed to lure users to malicious or compromised content, potentially for phishing or malware distribution. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious intent.

Machine Learning

  • Nyx PDF Classifier clean score 0.2122

Heuristics 5

  • 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
  • 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://christianboudreau.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e6cd9f76458---dagov.pdf In PDF document text
    • https://familienbilstrup.dk/ckfinder/userfiles/files/noxexupejavo.pdfIn PDF document text
    • http://elenasteele.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611c3720217f2---mapeladivalu.pdfIn PDF document text
    • https://porterbrothersltd.com/app/webroot/uploads/devaga.pdfIn PDF document text
    • https://lapalettedesarts.fr/gestion/file/rikazujurenisevoseg.pdfIn PDF document text
    • https://pasarantogeldua.com/contents//files/nuvegikefusawupipega.pdfIn PDF document text
    • http://ahxxzx.com/userfiles/202105/file/pizafi.pdfIn PDF document text
    • http://centralgiving.com/media/userfiles/file/mupajin.pdfIn PDF document text
    • https://feldmann-spedition.de/pics/userfiles/file/fakarivito.pdfIn PDF document text
    • https://helicopterleasingservices.com/userfiles/files/mivukedajewajuxudefat.pdfIn PDF document text
    • https://robertbah.si/files/file/xowisubu.pdfIn PDF document text
    • https://brmc.jp/user_data/userfiles/files/56643703453.pdfIn PDF document text
    • http://daiquangsico.com/img_duhoc/files/lomonukaxefojovodanab.pdfIn PDF document text
    • https://csom.cz/wp-content/plugins/super-forms/uploads/php/files/2fb8caa0db52c7224840f1e18e1933da/31599231484.pdfIn PDF document text
    • http://foto-preiss.at/upload_files/files/86586552604.pdfIn PDF document text
    • https://wcdt.co.th/wp-content/plugins/super-forms/uploads/php/files/8mijf067prurkt32gjsg6u92oa/76069875388.pdfIn PDF document text
    • http://self119.net/upload/userfiles/2021/07/files/210707071753.pdfIn PDF document text
    • https://korzayithalat.com/spot/admin/fckeditor/userfiles/file/11790301860.pdfIn PDF document text
    • http://svenstavik.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080ab0553fb6---26953263517.pdfIn PDF document text
    • https://www.landalastadservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16123aefa03d54---54193025960.pdfIn PDF document text
    • http://sosnovgeo.ru/userfiles/file/63351992035.pdfIn PDF document text
    • http://haai.org/upload/file/fojizuburimexe.pdfIn PDF document text
    • http://viaterrestre.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607b128bd30f3---41410338229.pdfIn PDF document text
    • http://adamlegal.com/userfiles/file/vikomabate.pdfIn PDF document text
    • https://an-professional.ru/img/files/file/lemawarojibulobuzopefofej.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=historia+de+la+funcion+cuadratica+pdfPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012e53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E53 21608 bytes
SHA-256: 9fa9d02b40ae64704135a6662785f058c68d2192ccc78e46f2f7e48003cfd32e
font_01_sfnt_off0001667b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1667B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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