Malicious PDF — malware analysis report

Static analysis result for SHA-256 116f5b7eca8671ce…

MALICIOUS

PDF

177.8 KB Created: 2021-08-25 17:22:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: aeb96e626334e3ee98774a8aa7784ac8 SHA-1: 7da0282df0dd10e2b0e2f103bda0c6e3e4bfdcfe SHA-256: 116f5b7eca8671ce8c7dc9bb46811defd5ffce0c16dd3b30e0d9f915128ad682
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected by ClamAV as Pdf.Phishing.Trojan. It contains a link farm pointing to compromised WordPress upload storage, suggesting an attempt to redirect users to malicious content. The PDF's structure and embedded links indicate a phishing or credential harvesting attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4865

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 http://www.finanzanlagen-honorarberatung.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609ab543ddc1e---20562722717.pdf In PDF document text
    • http://www.zav-mito.si/wp-content/plugins/formcraft/file-upload/server/content/files/1609c34d5ca318---vabomukamizuridar.pdfIn PDF document text
    • https://smartstone.ca/userfiles/files/6703694092.pdfIn PDF document text
    • https://oncetrabzon.com/resimler/files/fasitovekawanexotoba.pdfIn PDF document text
    • http://www.sudaff.com/pics/file/66414078065.pdfIn PDF document text
    • https://agribusiness.pk/wp-content/plugins/formcraft/file-upload/server/content/files/160c4c92be4e71---neresidavenoganojid.pdfIn PDF document text
    • https://actioncoach.com.my/wp-content/plugins/formcraft/file-upload/server/content/files/16119b096b49f1---jofejov.pdfIn PDF document text
    • https://globalazeri.az/wp-content/plugins/super-forms/uploads/php/files/hq2j6v78p1itrthfm2seqm8054/80865236012.pdfIn PDF document text
    • http://oris-am.com/editor_up/wisupebepatifexivu.pdfIn PDF document text
    • http://farashimirooz.com/files/xorukozimuk.pdfIn PDF document text
    • https://hoffmanowska.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160b9dd213492e---debuwodamevesoraxubexul.pdfIn PDF document text
    • https://local-atlas.ru/userfiles/files/pekuwejurer.pdfIn PDF document text
    • https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/415c2ececcb01a70e1f8e5b89f28c523/kumisikobikitafi.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073677047cf4---90688748935.pdfIn PDF document text
    • http://vasilii-orlov.fun/wp-content/plugins/super-forms/uploads/php/files/6dfbfd5cc04f4af134f480dadac91ccb/sejesokazeduvir.pdfIn PDF document text
    • https://angkagenap.com/contents//files/86055498241.pdfIn PDF document text
    • http://c2mag.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d2d82181f13---29810932254.pdfIn PDF document text
    • https://event-connections.net/wp-content/plugins/formcraft/file-upload/server/content/files/1606c74e0053cf---4873601709.pdfIn PDF document text
    • https://projectmine.hu/ckfinder/userfiles/files/xuxuvijamej.pdfIn PDF document text
    • https://mallorcaboom.com/res/wysiwyg/file/2921219041.pdfIn PDF document text
    • http://niestachow.pl/data/aktualnosci_imgs/file/dofil.pdfIn PDF document text
    • https://gpagroup.in/wp-content/plugins/formcraft/file-upload/server/content/files/16098756c44816---niposepepegirininexemuto.pdfIn PDF document text
    • http://taitung-house.com/CKEdit/upload/files/nuxuvevu.pdfIn PDF document text
    • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/2f2ec523e8fe641536044029a79c893f/1386359901.pdfIn PDF document text
    • http://www.goldenlantern.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160ee7db2ddc53---26659474341.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=ming+empire+mapPDF 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_off00027237.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x27237 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00028a4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x28A4E 10156 bytes
SHA-256: c47f9bec3b576f86c6e9457ad54df215db2d37edbb70e3e354e08e59ae89b2cc