Malicious PDF — malware analysis report

Static analysis result for SHA-256 fba6cfee916abcd1…

MALICIOUS

PDF

58.1 KB Created: 2021-07-06 16:46:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 88ef37dd1b004c3fc6f48067429022f6 SHA-1: a4cfaf20ba79840a6c4bf844d986d89d373dab55 SHA-256: fba6cfee916abcd1485d76db5e59c5ab8961a6c5adc546f7386e1b68bf719e90
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as a PDF phishing trojan by ClamAV. Static analysis revealed it functions as a link farm, with numerous URLs pointing to various domains, some of which are hosted on compromised CMS uploads. The presence of multiple distinct hosts and the use of UTM parameters suggest an attempt to obscure the ultimate destination and potentially track user engagement with the phishing lures.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3485

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://electrogalicia.com/electrogalicia/recursos/archivos/mitakuvukebaruwugovu.pdf In PDF document text
    • http://www.radioemka.com/wp-content/plugins/formcraft/file-upload/server/content/files/160945322576b8---lumetakefaro.pdfIn PDF document text
    • http://linkipt.com/_UploadEditor/files/50462423803.pdfIn PDF document text
    • http://scvumaichiramen.com/uploads/files/fuledemevixeduzos.pdfIn PDF document text
    • https://lecapsuledigian.it/file/98471415136.pdfIn PDF document text
    • http://sarahscupcakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160717e72a6fa9---72950737698.pdfIn PDF document text
    • http://www.empresasdelimpeza.info/wp-content/plugins/formcraft/file-upload/server/content/files/160747f5e51f79---48791007623.pdfIn PDF document text
    • https://thewaves.net/wp-content/plugins/super-forms/uploads/php/files/bl4b4304ha7b5u6c07uf6no3qg/36041137792.pdfIn PDF document text
    • https://spectrumohio.com/wp-content/plugins/super-forms/uploads/php/files/1c5e345eefcf939b865aaeb6c7987dce/felofinogat.pdfIn PDF document text
    • http://infinivideo.hu/sites/infinivideo/files/vipufuxuxulodelefiw.pdfIn PDF document text
    • http://pulsrmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a44f0f27436---dozunuzevujuw.pdfIn PDF document text
    • http://trackeg.com/en/wp-content/plugins/formcraft/file-upload/server/content/files/1609a6bce131fb---givifozemibenu.pdfIn PDF document text
    • https://ag-concept.ru/wp-content/plugins/super-forms/uploads/php/files/bcab7eb68871f28281beeea1e8ce87a3/liguzojexi.pdfIn PDF document text
    • https://www.northernillumination.com/wp-content/plugins/super-forms/uploads/php/files/1ab26a93dc8087b424f68d4d6009eafb/7209497922.pdfIn PDF document text
    • https://plswa.com/wp-content/plugins/super-forms/uploads/php/files/e637f291ecd50bee10ab44c435fa89eb/78357031625.pdfIn PDF document text
    • http://alexhoffordphotography.com/temp/files/file/zutofodurexopunokikavi.pdfIn PDF document text
    • https://designcoordinators.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f0ecab74d8---zeroxexededolezam.pdfIn PDF document text
    • https://www.dolphinrfid.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c4150b28306---lidilokebonajiwi.pdfIn PDF document text
    • http://ozdoby-betonowe21.pl/Upload/file/33015084617.pdfIn PDF document text
    • https://www.projectorrentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606efdd0048ff---48112912828.pdfIn PDF document text
    • http://skuplaptop.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160a6fbfd3cd54---41323891141.pdfIn PDF document text
    • https://www.lowdoc-loans.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160c346dcdcc79---50446062839.pdfIn PDF document text
    • https://israelonthehouse.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a35117c20fe---89366891604.pdfIn PDF document text
    • https://sipare.com.ar/wp-content/plugins/super-forms/uploads/php/files/ssnd1gilnjaa6hrnecbf6dev8u/41464876746.pdfIn PDF document text
    • http://c2mag.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072690d41aee---20228005646.pdfIn PDF document text
    • https://sce.tw/uploads/files/60cec21c0b9de.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=percent+problems+with+answersPDF link annotation